Hey guys, i have oem 18" rims and i want to upgrade the rear tires to however big i can for those rims, i have tried the rim calculator but i always seem to fck it up. Anyone with oem 18's upgraded the rear tires?

i think i would not go any bigger than 255/45/18's.

found this calculator from another site - http://ejelta.com/tiresize/index.htm...el=&maxdelta=2

looks like you can safely go with: 275/40-18 or 315/35-18

not sure why you would want 315s tho...

if you don't like that calculator then 1010tires.com has one too.

I Have 255/45/18 Or 265/40/18. My 2 Cents

315's WILL NOT fit your car safely!!!!

are our 18" are 18x8? I've yet to take them down and measure.

Thanks