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[GMCnet] Tires [message #65282] Sun, 22 November 2009 11:06 Go to next message
steve n is currently offline  steve n   United States
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Am having a mind freeze....(which seems to be occurring more frequently lately (lol).

My coach is currently running on 16.5" radials, with the original steel wheels.

Sometime real soon, I plan to get either the Alcoa's or Eagle's,. Haven't really decided which although it's my understanding that Jim K. will have Eagle's "on sale" during the month of December.

Anyway, my question is - Going to a 16" wheel/tire, from a 16.5", how will that effect the speedometer reading???

I should know this, but as I said earlier, I'm having a mind freeze.

Anyone have any thoughts??

Thanks,

Steve Nowak
F26083
'78 Royale Center Kitchen
TZE368V10877


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Steve Nowak F26083 '78 Royale Center Kitchen TZE368V101877
Re: [GMCnet] Tires [message #65283 is a reply to message #65282] Sun, 22 November 2009 11:15 Go to previous messageGo to next message
Ken Burton is currently offline  Ken Burton   United States
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It has no effect. If you use the correct size tires, the revolutions per mile on the new 16's are the same as your old 16.5 tires.

Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
Re: [GMCnet] Tires [message #65284 is a reply to message #65282] Sun, 22 November 2009 11:44 Go to previous messageGo to next message
rgleas is currently offline  rgleas   United States
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Location: Tulsa, Ok.
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First of I purchased my coach with Eagles and new tires LT225/75R16. This seemed to be the same size tire that I seen everyone else with Alcoa's or Eagles have used, so I gave no thought to changing tire size. With some background in automobiles I did take the difference into consideration when making alignment calculations. I have a 71 GMC pickup with the original 16.5 rims and high profile tires like original equipment. The tires on the motorhome are a little over 1 1/2" shorter than the tires on the pickup. Dividing this number in half the motorhome will set 3/4" lower than it did with original equipment tires. I took this into consideration when making height adjustments.

Now to answer your question, for the reasons above I questioned the speedometer along with the fact that my GPS registered faster speeds than my speedometer did (this is usually just the opsite in a vehicle with an accurate speedometer. The difference is due to the GPS registering topical speed verses the speedometer registering land speed (hills). We have a turnpike in the State in which I live that is just ove 100 miles from one end to the other. I checked the speedometer/odometer over this 100 miles finding the motorhome speedometer/odometer was registering 7% less than actual.

I believe this difference is due to the smaller tire and wheel size.

Hope this helps.
Re: [GMCnet] Tires [message #65286 is a reply to message #65282] Sun, 22 November 2009 12:12 Go to previous messageGo to next message
Mr ERFisher is currently offline  Mr ERFisher   United States
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Registered: August 2005
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here is some info
http://gmcmotorhome.info/tires.html

gene



On Sun, Nov 22, 2009 at 9:06 AM, fluffyms <fluffyms@juno.com> wrote:

> Am having a mind freeze....(which seems to be occurring more frequently
> lately (lol).
>
> My coach is currently running on 16.5" radials, with the original steel
> wheels.
>
> Sometime real soon, I plan to get either the Alcoa's or Eagle's,. Haven't
> really decided which although it's my understanding that Jim K. will have
> Eagle's "on sale" during the month of December.
>
> Anyway, my question is - Going to a 16" wheel/tire, from a 16.5", how will
> that effect the speedometer reading???
>
> I should know this, but as I said earlier, I'm having a mind freeze.
>
> Anyone have any thoughts??
>
> Thanks,
>
> Steve Nowak
> F26083
> '78 Royale Center Kitchen
> TZE368V10877
>
>
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>



--
Gene Fisher -- 74-23,77PB/ore/ca
“Give a man a fish; you have fed him for today --- give him a URL and
-------
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Re: [GMCnet] Tires [message #65300 is a reply to message #65286] Sun, 22 November 2009 14:46 Go to previous messageGo to next message
Don A is currently offline  Don A   United States
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Location: Dallas, TX
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I have a question for some of you guys who have been here a long while. Any one heard of guys going to 9.5 x 16.5 tires?

"The new direction is to use 16 inch wheels" Was the old "new" to use larger tires to try for better mileage?

I am looking at a Palm Beach with 9.? something tires, 9.5 I think. Both the middle and rear tires are just about touching the T skirt. I bet its a bear to get that sucker moving.

I also wonder why no one mentions going to a wider wheel, availability I guess. Jim K mentioned one time he was looking at 17" wheels. Your favorite BFG TA's are available in 17" diameter. Sure would like some 17 x 8" wide wheels.




Don Adams Dallas, TX
'76 26' Glenbrook, '90 Sidekick
rebuilt by R Archer, powered by J Bounds, Koba
[IMG]http://www.gmcmhphotos.com/photos/data/6109/G2.jpg[/IMG]
Re: [GMCnet] Tires [message #65310 is a reply to message #65282] Sun, 22 November 2009 16:56 Go to previous messageGo to next message
rgleas is currently offline  rgleas   United States
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Location: Tulsa, Ok.
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I am not dead sure as to why GM choose 16.5. Gm, Ford, and Crysler all used the same 8 bolt pattern, Ford and Crysler chose to use 16". The problem created is the 16.5 tires are sometimes hard to find and they also sometime charge a premium for them. If you live in a big city its no problem, but if you are out in the middle of nowhere it can be.
Re: [GMCnet] Tires [message #65312 is a reply to message #65300] Sun, 22 November 2009 17:01 Go to previous messageGo to next message
powerjon is currently offline  powerjon   United States
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Registered: January 2004
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Senior Member
Don,
Bigger is not necessary better. The larger 9.50-16.5 E tire was a
larger size that did fit closely. As you go up in tire size you
affect your final drive ratio. The 3.07 gear is marginal for
everything except flat land driving. If you have the 9.50 tire on the
coach your ratio becomes a 2.98. The 8.75 tire was the stock size
that kept the ratio at 3.07 and 225/75R16E tire is a 3.06. I drove
the 3.07 for 1 year and it was a real dog and then switched to a Jim K
3.55. Really wakes the coach up. I run a 225 ragwall tire on the
drive axels and the new G147 all steel on the back. I have run all
steel, all ragwall and a combo of ragwall on the front and all steel
on the back. The all ragwall and the ragwall/steel combo rode the
best with the all steel the worst of the ride and steering. As for
brands everyone has there favorite. I have BF Goodrich Commercial T/A
on the 77 with balance beads and it is a great ride and steers great.
The 75 has the Goodyear LT225/75R16 LRE Wrangler HT ragwalls on the
front and the Goodyear G147 All steel on the back. It has no road
miles yet as the tire on cart. Most of the tire makers can supply an
acceptable tire that will work well with the coach, the choice is yours.

Here is the tire size drive ratio chart:

http://www.gmceast.com/technical/Brown_Drive_Tire_Ratios.pdf

J.R. Wright
GMC GreatLaker
TZE Zone Restorations
77 Eleganza Custom (For Sale)
1975 Avion (Under Reconstruction)
Michigan

>
> I have a question for some of you guys who have been here a long
> while. Any one heard of guys going to 9.5 x 16.5 tires?
>
> "The new direction is to use 16 inch wheels" Was the old "new" to
> use larger tires to try for better mileage?
>
> I am looking at a Palm Beach with 9.? something tires, 9.5 I think.
> Both the middle and rear tires are just about touching the T skirt.
> I bet its a bear to get that sucker moving.
>
> I also wonder why no one mentions going to a wider wheel,
> availability I guess. Jim K mentioned one time he was looking at
> 17" wheels. Your favorite BFG TA's are available in 17" diameter.
> Sure would like some 17 x 8" wide wheels.
>
> Don
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J.R. Wright
GMC GreatLaker
GMC Eastern States
GMCMI
78 30' Buskirk Stretch
75 Avion Under Reconstruction
Michigan
Re: [GMCnet] Tires [message #65393 is a reply to message #65282] Mon, 23 November 2009 12:42 Go to previous messageGo to next message
Rick Denney is currently offline  Rick Denney   United States
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Registered: January 2004
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Senior Member
fluffyms writes...

> Anyway, my question is - Going to a 16" wheel/tire, from a 16.5",
> how will that effect the speedometer reading???

The rolling diameter of one brand of 225/75R16 tires is 29.3", and
they will all be similar.

I tried to look up the rolling diameter of 8.75x16.5 tires, which were
the original size on the GMC, and I can't find any online tire
database that lists specifications for non-metric tires except for
high-flotation mud tires. Thus, I suspect it has become impossible or
nearly so to buy them. Your plan is a good one.

Nominally, the 8.75 tire has a 78% profile, so the rolling diameter
should be 30". That's 2.4% larger than the 225/75R16 tires--within
normal error range of the speedo anyway. The 245/75R16 tires are about
the same error in the other direction.

Rick "who has seen both 225 and 245 tires on GMCs, but most go with
225" Denney

'73 230 Ex-Glacier "Jaws"
Northern Virginia

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'73 Glacier 230 "Jaws"
Re: [GMCnet] Tires [message #65395 is a reply to message #65284] Mon, 23 November 2009 12:50 Go to previous messageGo to next message
Rick Denney is currently offline  Rick Denney   United States
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Roger P. Gleason writes...



> I have a 71 GMC pickup with the original 16.5 rims and high profile
> tires like original equipment. The tires on the motorhome are a
> little over 1 1/2" shorter than the tires on the pickup.

That difference should be 3/4" in the diameter. You must have had
9.5's on your truck. The original spec for GMCs was 8.75. Their 30"
rolling diameter is .6" larger than the 29.3" rolling diameter of
225's.

> ...I checked the speedometer/odometer over this 100 miles finding
> the motorhome speedometer/odometer was registering 7% less than
> actual.

> I believe this difference is due to the smaller tire and wheel size.

My speedo read high even when I was running OEM 8.75" tires. The old
mechanical speedometers of that era weren't necessarily all that
accurate, and +/- 5% is pretty common. I had a '74 GMC pickup with
stock tires that was more like 10% high.

The difference in nominal tire diameter is about 2.4% between
8.75/78R16.5 tires and 225/75R16 tires. That will cause the speed to
read 2.4% higher because the tire is making more revolutions in the
same distance. 245 tires are off in the other direction, but might
have helped correct what was already an error in your speedo.

The 245 tires will fit and I've seen them on coaches. They are about
1.2" taller (overall), and will come about .6" closer to
interferences. But I bought 225's because I didn't really want to
increase my gearing.

Rick "but the 245's will increase ground clearance by .6 inches"
Denney

'73 230 Ex-Glacier "Jaws"
Northern Virginia

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'73 Glacier 230 "Jaws"
Re: [GMCnet] Tires [message #65396 is a reply to message #65300] Mon, 23 November 2009 13:02 Go to previous messageGo to next message
Rick Denney is currently offline  Rick Denney   United States
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Registered: January 2004
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Don Adams writes...

> I also wonder why no one mentions going to a wider wheel,
> availability I guess. Jim K mentioned one time he was looking at
> 17" wheels. Your favorite BFG TA's are available in 17" diameter.
> Sure would like some 17 x 8" wide wheels.

This actually has been discussed quite a lot, but it has been a while.
You need two things to go to a wider tire: A wider wheel and a wider
tire that maintains an acceptable rolling diameter and doesn't run
into things. Jim Bounds has wider wheels on the front of Larry, but
his source for those wheels was good luck, not anything that is really
repeatable. They can be custom-welded, but then you have heavy steel
wheels. To go to a wider tire at the same rolling diameter, you need
tires with a lower profile that still have the weight rating, and when
we discussed this a year or two back nobody could identify the tires.
Maybe they are available now, but I bet they aren't cheap.

I would not be a fan of going to 17" wheels. Frankly, I think a tall
sidewall provides more compliance and absorbs more road texture. These
low-profile tires look nice to the modern eye, but they are hard on
the fillings. And I'm sure I will offend someone by expressing the
opinion that a pickup truck with 22" wheels and a layer of what must
be solid rubber over them looks really silly.

Taller and narrower tires also provide better economy and better
traction in the wet with less likelihood of hydroplaning. Low profile
tires have more hysteresis in the sidewalls (unless you run them at
higher pressures) and make more heat when not being driven at the
limit of adhesion.

Those wide, low-profile tires sure are nice in tight corners, though.
That isn't exactly the GMC's design envelope, however.

Rick "who enjoys paying a fraction of what the big RV owners pay for
tires" Denney

'73 230 Ex-Glacier "Jaws"
Northern Virginia

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'73 Glacier 230 "Jaws"
Re: [GMCnet] Tires [message #65399 is a reply to message #65396] Mon, 23 November 2009 13:10 Go to previous messageGo to next message
Dennis S is currently offline  Dennis S   United States
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Registered: November 2005
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Senior Member

My thoughts are that the taller sidewall is beneficial on the rear of the GMC, especially a 23 ft, as the relatively short wheelbase with the tandem wheel set-up puts a lot of side force on the tires when "parking lot" turning. If you want a visual, start a sharp turn when parking and while the front wheels are still are max stop the coach, get out and look at the distortion on the rear tires/wheels.

Dennis


Dennis Sexton
73 GMC
Germantown, TN
USA



-----Original Message-----
From: Rick Denney <rick@rickdenney.com>
To: Don Adams <gmclist@temp.gmcnet.org>
Sent: Mon, Nov 23, 2009 1:02 pm
Subject: Re: [GMCnet] Tires


Don Adams writes...
> I also wonder why no one mentions going to a wider wheel,
availability I guess. Jim K mentioned one time he was looking at
17" wheels. Your favorite BFG TA's are available in 17" diameter.
Sure would like some 17 x 8" wide wheels.
This actually has been discussed quite a lot, but it has been a while.
ou need two things to go to a wider tire: A wider wheel and a wider
ire that maintains an acceptable rolling diameter and doesn't run
nto things. Jim Bounds has wider wheels on the front of Larry, but
is source for those wheels was good luck, not anything that is really
epeatable. They can be custom-welded, but then you have heavy steel
heels. To go to a wider tire at the same rolling diameter, you need
ires with a lower profile that still have the weight rating, and when
e discussed this a year or two back nobody could identify the tires.
aybe they are available now, but I bet they aren't cheap.
I would not be a fan of going to 17" wheels. Frankly, I think a tall
idewall provides more compliance and absorbs more road texture. These
ow-profile tires look nice to the modern eye, but they are hard on
he fillings. And I'm sure I will offend someone by expressing the
pinion that a pickup truck with 22" wheels and a layer of what must
e solid rubber over them looks really silly.
Taller and narrower tires also provide better economy and better
raction in the wet with less likelihood of hydroplaning. Low profile
ires have more hysteresis in the sidewalls (unless you run them at
igher pressures) and make more heat when not being driven at the
imit of adhesion.
Those wide, low-profile tires sure are nice in tight corners, though.
hat isn't exactly the GMC's design envelope, however.
Rick "who enjoys paying a fraction of what the big RV owners pay for
ires" Denney
'73 230 Ex-Glacier "Jaws"
orthern Virginia
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Dennis S
73 Painted Desert 230
Memphis TN Metro
Re: [GMCnet] Tires [message #65457 is a reply to message #65393] Tue, 24 November 2009 00:55 Go to previous messageGo to next message
Ken Burton is currently offline  Ken Burton   United States
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Rick Denney wrote on Mon, 23 November 2009 12:42

fluffyms writes...

> Anyway, my question is - Going to a 16" wheel/tire, from a 16.5",
> how will that effect the speedometer reading???

The rolling diameter of one brand of 225/75R16 tires is 29.3", and
they will all be similar.

I tried to look up the rolling diameter of 8.75x16.5 tires, which were
the original size on the GMC, and I can't find any online tire
database that lists specifications for non-metric tires except for
high-flotation mud tires. Thus, I suspect it has become impossible or
nearly so to buy them. Your plan is a good one.

Nominally, the 8.75 tire has a 78% profile, so the rolling diameter
should be 30". That's 2.4% larger than the 225/75R16 tires--within
normal error range of the speedo anyway. The 245/75R16 tires are about
the same error in the other direction.

Rick "who has seen both 225 and 245 tires on GMCs, but most go with
225" Denney

'73 230 Ex-Glacier "Jaws"
Northern Virginia



Rick,

I read somewhere that the revolutions per mile on the 8.75 16.5" tire was 719. The number for 225/75R16 is 710. If the 719 number is correct then the 16.5" tire we used was really slightly smaller in diameter than the 16" tires we are now using on the Alcoa and Eagle wheels.


Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
Re: [GMCnet] Tires [message #65459 is a reply to message #65457] Tue, 24 November 2009 02:19 Go to previous messageGo to next message
Rick Denney is currently offline  Rick Denney   United States
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Registered: January 2004
Karma: 0
Senior Member
Ken Burton writes...

> I read somewhere that the revolutions per mile on the 8.75 16.5"
> tire was 719. The number for 225/75R16 is 710. If the 719 number
> is correct then the 16.5" tire we used was really slightly smaller
> in diameter than the 16" tires we are now using on the Alcoa and Eagle wheels.

I recall such numnbers, too, but I can't confirm them. One
manufacturer's tire specification reported 689 revoluations/mile for
their 225/75R16, with a rolling diameter of 29.3" (which is nearly
exactly the nominal size of a tire with a 225mm section, a 75%
profile, and a 16" wheel). The nominal rolling diameter of an 8.75"
tire (78% profile) is 30.15", with 669 revolutions per mile.

The revolutions per mile will always be a little higher because the
deformation of the tire decreases its rolling diameter slightly. But
the relative values should be the same.

For any given tire product, it could vary one way or the other by a
percentage point or two, I would think.

Rick "checkig his arithmetic" Denney

'73 230 Ex-Glacier "Jaws"
Northern Virginia

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'73 Glacier 230 "Jaws"
Re: [GMCnet] Tires [message #65460 is a reply to message #65459] Tue, 24 November 2009 05:53 Go to previous messageGo to next message
k2gkk is currently offline  k2gkk   United States
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Senior Member

Just for a bit of info whilst hoping my memory
hasn't gone away on this subject.

In the tire numbering system such as 225/75R16,
the 225 is the width in millimeters, the 75 is
the ratio (in percentage) of height of the tire
to its width, the R means radial construction,
and the 16 is the wheel diameter in inches.

Older numbering system had the first number in
inches, i.e., 6.70 x 15, etc. If the height/
width factor had been on those tires, it would
probably have been between 80 and 90, perhaps
even as much as 100 for truck tires.

In other words, the larger the second number,
the "taller" the tire is for any diameter and,
of course, vice versa. All other characteristics
being the same, the taller tires tend to give a
smoother ride and the shorter tires tend to give
more precise and stable handling.

D C "Mac" Macdonald
USAF, Retired
Ham Callsign - K2GKK
Oklahoma City, OK
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Re: [GMCnet] Tires [message #65461 is a reply to message #65459] Tue, 24 November 2009 06:00 Go to previous messageGo to next message
Jim Bounds is currently offline  Jim Bounds   United States
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Registered: January 2004
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Senior Member
If you are talking about tire diameter effect on your speedometer, let me throw in another wrinkle-- I am seeing a rather large range of differences in speedometer readings due to weak springs in the speedo head.  The years are taking it's toll on our hardware so having an "accurate" speedometer is pretty difficult to have.  You can tell you have a spring issue if you compare the speedo to a GPS readout at different speeds.  My reading has a 3 MPH difference at 40 MPH and a 10 MPH difference at 65 MPH.  Seems that the higher the speed the more off the speedo is.  Seems like that would not be a factor of a constant ratio rather the head itself.  Right now, the speedo simply fills the hole and gives me a relative speed when I do not connect up my GPS, for actual speeds I have to say the GPS does the trick so don;t go through a huge amount of expense and time trying to calibrate your 30+ ear old speedometer, it is probably going to change next month!

Jim Bounds
--------------------------



----- Original Message ----
From: Rick Denney <rick@rickdenney.com>
To: Ken Burton <gmclist@temp.gmcnet.org>
Sent: Tue, November 24, 2009 3:19:16 AM
Subject: Re: [GMCnet] Tires

Ken Burton writes...

> I read somewhere that the revolutions per mile on the 8.75  16.5"
> tire was 719.  The number for 225/75R16 is 710.  If the 719 number
> is correct then the 16.5" tire we used was really slightly smaller
> in diameter than the 16" tires we are now using on the Alcoa and Eagle wheels.

I recall such numnbers, too, but I can't confirm them. One
manufacturer's tire specification reported 689 revoluations/mile for
their 225/75R16, with a rolling diameter of 29.3" (which is nearly
exactly the nominal size of a tire with a 225mm section, a 75%
profile, and a 16" wheel). The nominal rolling diameter of an 8.75"
tire (78% profile) is 30.15", with 669 revolutions per mile.

The revolutions per mile will always be a little higher because the
deformation of the tire decreases its rolling diameter slightly. But
the relative values should be the same.

For any given tire product, it could vary one way or the other by a
percentage point or two, I would think.

Rick "checkig his arithmetic" Denney

'73 230 Ex-Glacier "Jaws"
Northern Virginia

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Re: [GMCnet] Tires [message #65489 is a reply to message #65461] Tue, 24 November 2009 08:56 Go to previous messageGo to next message
rgleas is currently offline  rgleas   United States
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Member
You also need to keep in mind that GPS measures from hill top to hill top while the land speed will be different. This is an over dramatizaiton to make the point of how GPS works but it will be a factor in some areas as opposet to others.
Re: [GMCnet] Tires [message #65494 is a reply to message #65489] Tue, 24 November 2009 09:17 Go to previous messageGo to next message
C Boyd is currently offline  C Boyd   United States
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rgleas wrote on Tue, 24 November 2009 09:56

You also need to keep in mind that GPS measures from hill top to hill top while the land speed will be different. This is an over dramatizaiton to make the point of how GPS works but it will be a factor in some areas as opposet to others.





So you are saying GPS is as "the crow flies"?? Maybe that is why it says the barn is one block down on the other side of the street.


C. Boyd
76 Crestmont
East Tennessee
Re: [GMCnet] GPS Accuracy (was: Tires) [message #65497 is a reply to message #65494] Tue, 24 November 2009 09:21 Go to previous messageGo to next message
k2gkk is currently offline  k2gkk   United States
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Registered: November 2009
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Senior Member

The coordinates, if shown, are probably quite accurate.
The problem lies in the accuracy of the mapping program.

D C "Mac" Macdonald
Oklahoma City, OK


----------------------------------------
> To: gmclist@temp.gmcnet.org
> From: covered-wagon@comcast.net
> Date: Tue, 24 Nov 2009 09:17:47 -0600
> Subject: Re: [GMCnet] Tires
>
>
>
> rgleas wrote on Tue, 24 November 2009 09:56
>> You also need to keep in mind that GPS measures from hill top to hill top while the land speed will be different. This is an over dramatizaiton to make the point of how GPS works but it will be a factor in some areas as opposet to others.
>
>
>
>
>
> So you are saying GPS is as "the crow flies"?? Maybe that is why it says the barn is one block down on the other side of the street.
> --
> C. Boyd
> 76 Crestmont by Midas
> East Tennessee
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Re: [GMCnet] Tires [message #65502 is a reply to message #65459] Tue, 24 November 2009 09:51 Go to previous messageGo to next message
Ken Burton is currently offline  Ken Burton   United States
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
Senior Member
Rick Denney wrote on Tue, 24 November 2009 02:19

Ken Burton writes...

> I read somewhere that the revolutions per mile on the 8.75 16.5"
> tire was 719. The number for 225/75R16 is 710. If the 719 number
> is correct then the 16.5" tire we used was really slightly smaller
> in diameter than the 16" tires we are now using on the Alcoa and Eagle wheels.

I recall such numnbers, too, but I can't confirm them. One
manufacturer's tire specification reported 689 revoluations/mile for
their 225/75R16, with a rolling diameter of 29.3" (which is nearly
exactly the nominal size of a tire with a 225mm section, a 75%
profile, and a 16" wheel). The nominal rolling diameter of an 8.75"
tire (78% profile) is 30.15", with 669 revolutions per mile.

The revolutions per mile will always be a little higher because the
deformation of the tire decreases its rolling diameter slightly. But
the relative values should be the same.

For any given tire product, it could vary one way or the other by a
percentage point or two, I would think.

Rick "checkig his arithmetic" Denney

'73 230 Ex-Glacier "Jaws"
Northern Virginia



I got the 710 figure by looking up BF Goodrich Commercial TAs on Tire Rack's web site.


Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
Re: [GMCnet] GPS Accuracy (was: Tires) [message #65508 is a reply to message #65497] Tue, 24 November 2009 10:07 Go to previous messageGo to previous message
C Boyd is currently offline  C Boyd   United States
Messages: 2629
Registered: April 2006
Karma: 18
Senior Member
k2gkk wrote on Tue, 24 November 2009 10:21


The coordinates, if shown, are probably quite accurate.
The problem lies in the accuracy of the mapping program.

D C "Mac" Macdonald
Oklahoma City, OK








Sir: I am not real "savy" on a lot of these new fangled thingies. I know that thanks to my wife and a good friend from downunder I have 2 GPS. One is a Commercial unit for big truck and one is a tourist type. They give different locations from the same place? Which is even different from Google or MSN.. Makes me think there might be a reason for me not knowing where I`m at most of the time??


C. Boyd
76 Crestmont
East Tennessee
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