72cutlassolds

whats up classicolds world just had a question about tires size. I have a 72 cutlass supreme and im finally at the part where i need tires i got 15/7 ralleys i want some nice beefy looking size in the back and just a lil smaller in the front with that being said how should i ask for that set up who knows a nice tire set up pics would be nice thanks for reading

hurst68olds

245/60/15 front & 275/60/15 rear usually works well

RetroRanger

I roll 255-60-15s at all four corners on SSIIIs 72 supreme

oldsmobiledave

Need more info...how do you use your car & what are is the driveline package...engine?...trans?...Rear gear ratio?

I sure would not pick a 275 60 15 tire out back if I had a 350 2bbl with a T350 & a 2.56 open diff.....see my point?

hurst68olds

actually, I don't see your point .....

Most probable original tire was G78-14 = ~ 27.1" diameter
275/60/15 = ~ 28.0" diameter

Standard engine in a Cutlas Supreme was a 350 4bbl & 2.73s were the lowest numerical gear in '72 (& yes I understand that many things can be changed in 40 years)

72cutlassolds

i have a 350 rocket four barrel carb i dont race or nothing well i never drove the car im restoring it but its a 350 th350 tranny stock 10 bolt rearend

QMaster

I have 245/60-15s at all four corners.

1970supremevert

I am running 255-60-15 rear , 225-70-15 up frt , speedo error 5 mph slower that actual speed 71 supreme

jerseyjoe

I have 245-60-15 - 15-7 Rims on my 68. No issues with rubbing, car runs fine on them. I have a limited slip 2.78 rear so no fun with burnouts...