New Tail Wag/Sway problem [message #87938] |
Thu, 10 June 2010 12:04 ![Go to next message Go to previous message](/GMCforum/theme/default/images/down.png) |
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1977Production#0001
![United States United States](/GMCforum/images/flags/us.png) Messages: 197 Registered: January 2010 Location: Vallejo, California
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OK first off, I know some play in steering is normal, this coach probably has more than normal. This is on the list to fix. Even with the steering play, the coach had 16.5's with Michelin XPS in the rear and seemed very stable even with a slight over correction of steering. Bushings were missing on rear shocks so I replaced all 6 shocks...Still stable on the highway. Now with brand new 16" Alcoa's and BFG Commercial T/A highway tires the coach is REALLY smooth at high speeds (65+) BUT, the problem is that a slight movement of the steering wheel causes the back end to wag quite a bit. The first time I drove it I had to grit my teeth and plan my next steering wheel move 5 seconds in advance. I have learned how to deal with the steering play and not overcorrect- this solved the wagging problem. My main question is: Why didn't the coach wag before the new tires? Were the Sidewalls of the 11 year old Michelin XPS's that much stiffer? Were they steel sidewall? This is not a subtle difference..its a whole new driving style needed.
Giovanni(Carlo) 1977 GMC Kingsley 26ft
"Carbon Footprint"
Rear Twin, Dry Bath, Original Headliner
[Updated on: Sat, 12 June 2010 18:28] Report message to a moderator
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