chrisd56

I recently in a pinch had to put 255/40/18 on the front two, when i went to get the matching rear 285/35/18 they are discontinued.

Can i put either 275/40/18 or 295/35/18 on my 18x9.5 AMG 5 spoike rims? I like the back tire sidewall to be slightly bigger then the fronts if possible.

BTW..my car is a 2007 cls with p2 and amg sports package

threeMBs

275/40-18 -yes, 295/35-18 - no, need wider wheel (18x10)

chrisd56

Great, so the 275/40/18 will fit the rear and the tire height won't be a problem?

B R

You need to make sure the OD of both F & R are close, no more than 1" difference.

chrisd56

Sorry i don't know too much on this.... so is this good?

Front 255/40/18
sidewall 4.0
radius 13.0
diameter 26.0
circumference 81.8
revs/miles 775.0

Rear 275/40/18
sidewall 4.3
radius 13.3
diameter 26.7
circumference 83.8
revs/miles 756.0

threeMBs

Yes you're good to go as tires are within 0.7" front to rear.