Ok so its about time for new tires on my gt and I have the 5 spoke polished stock wheels that measure 8.5 I am told. I have a set of winter rims so I am looking at the BFG KDWS. Whats the biggest tire size I could squeeze on the rim? I saw a guy with 275's on my rims and I was thinking how possible it is. aNY input would be greatly appreciated on tire sizes and options. Thanks

 

Are those 18x8.5s by any chance?
235/50-18s stock size?

I have 255/45-18s on OEM 18x8.5" rims.
and I believe 275/40-18s would fit and the speedo be almost correct.

 

Most tire specs you look at will tell you what wheel width is appropriate for that tire. I suspect 255's is mostly the max you'll see recommended. Go to tirerack.com and do some homework.

 

yeah they are the 18s. I have an 07cs the same color you got up there. I keep looking on maximum tire sizes but I am just coming up short. thanks for the input dudes

 

Its really tire brand specific. Not tire size specific.
www.tirerack.com
Research brands and recommended rim widths there.

 

I have 18x8.5" on the front with 255/45/18 tires.

Tire Size Calculator
http://www.1010tires.com/TireSizeCal...mp;vehicle=yes