Widest tire on stock 18" rim
 

I can't even take it. My parents won't let me change rims on my mustang (which is no big deal, I have the five spoke 18"s0. But, I can't even bear to look at my mustang on 235/45/18's. They look like friggen bicycle tires! My old mustang was sitting on 315/35/17's, and 275's in the front. I'm problably going to stagger the tires, for a meaner muscle look.

Are they 18x8's or 18x7.5s or 18x8.5's?
What is the widest tire I can put on the rear wheels of my mustang?

What wheels?

http://www.flickr.com/photos/byone/3150180021/ except they have the black inlay on the inner part

ah yes the fan blades

prolly go up to a 245 and drop the sidewall to 40...a quick google search will prolly answer your question though.

Id do 255/40/18. if they are 8.5'' you can go 275.

They're 18x8.5 I think. I got the premium with the Bullit style wheels and that's what mine are. I'd just wait for some new wheels. A real fat tire on a skinny rim looks real fucking stupid in my opinion.....

you can squeeze 275's on a 8" rim.

^ O.o

I was thinking around 275 would be max. I think I'm gonna roll with a 255 or 265, the 275 will bulge way to much if it turns out to be an 8" rim.

dude...stop guessing...pull a wheel off and look at the stamping on the inside that shows what size it is.

I'd go 245/45.. Best overall.

I didn't know that it is possible to pull the wheel off and know. I'm gonna go ride the short bus now.

They are 18x8.5 and a 275 will fit out back no problem. I run 275s out back on 8" wheels they have a slight bulge and I like the look.

<-----------PIC

Thanks a million spike!

Dude, I have 275s on a 9" wide rim.

You don't want that much sidewall bulge. It will lead to poor handling.

right.

Gonna roll with a 265. Thanks everyone!