Am I able to comfortably run 275/60 on rear and 245/60 on front with 15x7 aftermarket wheels with a 4” backspace? Would there be room to run 275/60 on all 4 wheels?

 

I'm assuming this is for the 1970 Cutlass in your photo...

I run 255/60-15 on 15x7s in the front and 275/60-15 on 15x7s in the rear.

I need to be a bit careful on the front when turning full lock over a bump, otherwise the tread catches the stainless wheelhouse trim. Cutting speed is all I need to do to prevent this.

The rear has lots of room.

I've not tried it, but I think 275s up front might present problems.

 

Thanks. Are you running a 4” backspace as well?

 

My wheels have 4.0" backspace.

 

Perfect thanks. That’s exactly the advice I was looking for, much appreciated.