235 70 15 rear early abody

pishta said

Someone tell me what max tire is in a 65 Barracuda with a stock A 8 3/4 rear. 205/70R14's currently on rallies. Want to go 15's as i have 15x7 SBP reverse Centerlines from a Chevy 2 so they are more back spaces than front. Maybe 5 back and 3 front. Redrilled.

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OK, STOCK 7 1/4 was a A78 13 that is close to a 155/78 13.

The upgrade was D70 14 and that was about a 165/70 14. So that should have been used for any 65 Formula S. But the 1964-1966 Barracuda's got a bigger rear wheelwell than most of the other A bodys so you can fit a bigger tire under one than a Dart/Valiant.

Using a 1974 Dart Swinger 7 1/4 LBP axle and SS springs, I had 245/60 15's under my 1965 Formula S Barracuda on 5.5 inch Mopar rallys for a few years and NEVER rubbed.

Currently have 275/60 15's on Cop Car ralleys under it but they do rub.