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| Re: [GMCnet] Aged tires [message #73400 is a reply to message #73386] |
Tue, 09 February 2010 21:52   |
Keith V
Messages: 2337
Registered: March 2008
Location: Mounds View,MN
Karma: 0
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I've had many an argument about old tires. People just don't believe a tire can fail if there is good tread on it.
I bought my GMC 250 miles from home. It had some 7, a 9 and an 11 year old tire. All with good tread. The seller was trying to convince me they were still good "Look at all that tread!"
There was no way I was driving home 250 miles on those death traps.
A coworker was on the verge of getting mad at me for trowing out 6 perfectly good tires, after all, his family had a trailer up at the cabin for years and they never changed the tires....
Of course he was the same guy who told me I couldn't run aluminum wheels on a motorhome since it weighed so much..right as we were walking past a Semi with 18 aluminum wheels on it.
Be careful who you listen to and 6 years tops
Keith Vasilakes
Mounds View. MN
75 ex Royale GMC
ask me about MicroLevel
Cell, 763-732-3419
My427v8@hotmail.com
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| Re: [GMCnet] Aged tires [message #73403 is a reply to message #73400] |
Tue, 09 February 2010 22:11 |
GMCNUSA
Messages: 283
Registered: August 2006
Location: Indianapolis, IN
Karma: 0
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I knew about tires blowing because on a GMC test drive 5 miles from pulling off of the lot going 50 mph the 8 yr old rear tire delaminated. When we found the coach we bought it had three 6 yr old Michelins and 3 newer ones. This is a coach that had been driven from Florida to Pennsylvania 2 weeks earlier. The owner told me it had 3 older tires and suggested I get new ones and I agreed. About 150 miles on the way home rt rear took out the tee skirt air lines etc. These were tires which were driven about 25000 miles in their 6 year life. Don't run old tires.
Larry Dilk
Indianapolis, IN
76 Eleganza II
Patterson 455,Turbo City TBI,
Just LOVE It!
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| Re: [GMCnet] Aged tires [message #73433 is a reply to message #73400] |
Wed, 10 February 2010 10:07 |
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mike miller
Messages: 3576
Registered: February 2004
Location: Hillsboro, Oregon
Karma: 0
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| Keith V wrote on Tue, 09 February 2010 19:52 |
I've had many an argument about old tires. People just don't believe a tire can fail if there is good tread on it. ...
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Age is only one of the factors that cause tires to go bad. UV light (as in sunlight), ozone and lack of use (as in rolling while supporting weight) are also major factors.
This is how I understand it:
There are oils and other chemicals in the "rubber" of the tires to help them stay flexible. UV light and ozone dry out these "oils." This drying first shows up as checking (cracks) of the sidewalls. The oils are distributed in the rubber of the tire as the tire is used, reducing the drying out of the sidewalls. Note that the use of most tire dressings (ie Armorall) DO NOT reduce the drying of the rubber... many make it worse.
A "brand new" tire on the storage shelf in the back of a tire store doesn't see much sunlight but it doesn't see any use. The only reason to buy older (5 years old) tires is if you get a good price AND you KNOW you are going to wear them out within a year or so. (Not likely in a motorhome!) There is NO reason to buy a 6 year old "new" tire. I wouldn't by display tire regardless of the age. (Sunlight in the window.)
When tires are put into service within the first year, used regularly and protected from the sun when not in use can last much longer than 6 years. Granted, I am not that anal about covering my tires... but should be. (If you live in a hot dry place, you should be also.) Most tires on RV's DO NOT meet the conditions to last that long, mostly due to lack of use.
Most people buy RV tires without knowing the real age of the tires. When asked how old the tires are they think back to when they bought them... (They almost think the tires where made in the back room of the tire store or something.) You have to give them time to be shipped from the manufacture to the store. That said, you should be able to get tires that are less than 6 months old. If your tire store can not get them for you... go somewhere else. (I have seen tires only weeks old in a local store.)
I have 6 new 16inch Eagle rims from Jim K. My "Plan" to convert from 16.5's, is to buy two new tires each year for the next 3 years. Then replace two tires every OTHER year after that. The new tires would go on front and move back one axle with each replacement. I am thinking of getting 16 inch wheels for my Sidekick to "finish off" the tires. (I know E rated tires would be an over kill...)
Anyway, a long way of saying that I agree with you about old tires!
Mike Miller -- Hillsboro, OR -- on the Black list
(#2)`78 23' Birchaven Rear Bath -- (#3)`77 23' Birchaven Side Bath
More Sidekicks than GMC's and a late model Malibu called 'Boo'
http://m000035.blogspot.com
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| Re: [GMCnet] Aged tires [message #73436 is a reply to message #73344] |
Wed, 10 February 2010 10:28 |
Luvn737s
Messages: 1106
Registered: June 2007
Karma: 2
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So should you buy tires as disposable items and choose a tire that meets spec, but might be an off-brand, so that you don't try to justify stretching them beyond 6 yrs? Or do you increase the budget for tires and just look at it as the cost of ownership is higher?
Randy
1973 26' Painted Desert
Ahwatukee (Phoenix) AZ
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