Rear tire 20inch fitment ? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

SCOTI · 12-22-2022, 10:30 AM

There's never an exact answer for these questions. What fits on 5 different trucks might have issues on 5 other trucks because of subtle variances. What's the BS on the 15's?

If the wheels are the same width & BS, only the height is slightly different. At only 4" of rear drop, that change shouldn't be an issue.

There can be minor size variances between similar section width tires (275mm), especially when using different diameter combos w/different aspect ratios (40 vs 60).
It comes down to where the new combo will sit relative to where the old was & the amount of clearance the old combo has.

12-22-2022, 10:30 AM	#4
SCOTI Registered User Join Date: Apr 2001 Location: DALLAS,TX Posts: 22,572	Re: Rear tire 20inch fitment ? There's never an exact answer for these questions. What fits on 5 different trucks might have issues on 5 other trucks because of subtle variances. What's the BS on the 15's? If the wheels are the same width & BS, only the height is slightly different. At only 4" of rear drop, that change shouldn't be an issue. There can be minor size variances between similar section width tires (275mm), especially when using different diameter combos w/different aspect ratios (40 vs 60). It comes down to where the new combo will sit relative to where the old was & the amount of clearance the old combo has. __________________ 67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... *Cubic inches is like Indiana Jones with a cheap pistol.*



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