I have an 05 G35c with 20"/8.5 front & 20"/10 rear. I was told by Town Fair Tire that a 245/35/20 front & a 275/30/20 rear. I have seen alot of G's with 255/35/20 front & 285/30/20 or 295/25/20 rear. Does anybody know what size will fit correctly with no rubbing or problems? I know a widder tire will have more traction but are these sizes overkill??? The offset in the front is 20 and the rear 30...

 

Depends on the offset of your wheels.

 

i would say the 255 is a little too much but 285 and 295's shouldnt be a problem.. but yeah what ttrank said.. it depends on off set

 

The offset is 20 in the front 30 rear.

 

275/30 would be fine on a 10" +30