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Old 05-07-2006, 09:11 PM
Tom Howland Tom Howland is offline
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Join Date: Dec 2000
Location: Corralitos, CA
Cobra Make, Engine: 1980 Arntz 427W, Webers, TKO600, Jag IRS
Posts: 476
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Clay,
My big issue with size is the front tires. I have the old 265-50-15 BFG. They are 25.25” diameter. I have moved the front suspension 1 1/2” forward so the left tire wouldn’t rub the rear of the wheel well when turning left. Right now everything works great. The Yokos 255-60-TR15 are 27” in diameter. That wouldn’t work. I’d be rubbing again. Last night I found Dunlop 265-50-TR15 at 25.5”. The rears seem to be the same with all manufactures at 26.7”. I think I’ll go with the Dunlop’s.

Jerry,
I had the rear totally rebuilt 2 years ago. Even new driveshaft u-joints. Hadn’t thought about hub wobble or lip runout. I have bolt on’s. They are U.S. Indy slot mags, 8.5” in front, 10” in back. That’s a good idea to align with the same stud each install. I had the car on a dyno last month and specifically watched the rear wheels for any hop. Didn’t see any. But now I remember the operator only went to 60 mph. Thanks for the tips.
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