You need to say what car you are mounting these on. Also are you running 15x8" on all 4 corners or just out back?

Post more details FIRST

 

 

What look are you after? Big in back, little in front or all 4 the same size?

 

 

This will give you some ideas
https://classicoldsmobile.com/forums...ost-yours.html

 

255 60 15s all around is the biggest. Personally I think that 255 60 15s up front is too big on the front.

I prefer 275 60 15s out back on 15 x 8s & 225 70 15s up front on 15 x 7. Have also run 245 60 15s up front on 7s.

Good luck with what you decide.

 

Running a 15x8 on the front is going to cause rubbing issues unless your tires are REALLY short and I don't recommend that. I'd say a 15x8 on the rear and a 15x7 on the front.You can do a 275/60/15 on the rear a 225/70/15 on the front. Or maybe a 295/50/15 with a 235/60/15.

 

Unless the SS1 are aftermarket or widened, they'd be 15x7. Double check.

 

Ive got 255-60-15s on 15x8 at all four corners. I might get minor rub at the extremes but its infrequent and not an issue imo

72 supreme

 

 

SS-1 wheels: 15x8 in the back and 15x7 in the front. 275/60 or 255/60 in the back. 235/70 or 225/70 in the front.