C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette

Max rear tire size

Old 05-14-2019, 07:35 PM
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Default Max rear tire size

Wondering if anyone knows the max rear tire size I can fit on my 74 running the factory wheels (15)
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Old 05-14-2019, 10:53 PM
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I have 275 /60/15 on rear of mine
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Old 05-14-2019, 11:59 PM
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Originally Posted by Black74vette View Post
Wondering if anyone knows the max rear tire size I can fit on my 74 running the factory wheels (15)
I would pick a tire manufacturer and size and see if their fitment chart recommends the tire size on a 8" wide wheel.
If my 245-60-15 BFG's were any wider I would have to move the parking brake bracket.
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Old 05-16-2019, 07:09 PM
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I run 255/60-VR15's all the way around on my '73. 255/60-15's became an optional tire in '78 on the factory 8" wheel. The only issue I've seen is minor rubbing, at full lock on the left front tire. It touches the head of one of the "carriage" style bolts that hold the steering box to the frame and keeps it polished for me.

No issues on the rear at all.

Good luck... GUSTO

Last edited by GUSTO14; 05-16-2019 at 08:28 PM. Reason: added picture
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Old 05-17-2019, 12:16 AM
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I have 295 50/15's on the 8" rallys, but I also have offset trailing arms (68 Vert)

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Old 05-17-2019, 12:32 AM
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I run 275-60-15's on the rear of mine but I did relocate the parking brake bracket, from the side, to the top of the T/A.
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