99PewterTransAmGA

Ive had Nitto 55's on my car on all 4 corners for about 20,000 miles or so and tere are wore down pretty bad. im about to order a new set and my rims are 17x8.5...I have now 275/40's and tey didnt wear evenly at all. I was wondering what the correct tire size is for that size rim. I saw some 255/40's in the same tire and was just going to check and see what is the correct size before I mssed up and got the wrong size again.

Roarin_8

iTrader: (5)

Was the tire pressure the same all the way around and did you rotate them? I believe that 275 40 17 is the correct size for an 8.5 inch rim.

99PewterTransAmGA

I keep about 32 to 34 pounds in em cold. I was thinkin that 275/40's were more subtable for 17x9.5 rims? So I should stick with the same tire dimensions?

Roarin_8

iTrader: (5)

Where was most of the wear on the tire located at? And you may be right, they may be too wide for that type of rim.

99PewterTransAmGA

Before I rotated them the fronts were wearing very badly on the other edges..and abviously I was putting stress on the rears from aggressive driving. Now with the roatation of the tires from fornt to back a few months ago the fronts are getting bald on the middle right side up front. What u think?

Roarin_8

iTrader: (5)

Sounds like your alignment is off. Have you checked your tierods?

99PewterTransAmGA

No. I havent. I never got the car aligned after getting rims and tires bout a year and a half ago. Whatever size tire I get when I order in a day or two im getting alignment. Do you still think the 275/40 is too big for a 8.5 rim? or 255/40 lil small?

Just noticed your sig...my trans am looks ust like your old one except for tha rims.

Roarin_8

iTrader: (5)

I'd say get the 255 until you get a 9.5 rim. Have them check your alignment out also and show them the wear on your tires.

Those were the stock rims on the T/A by the way.

99PewterTransAmGA

I was just wondering if the 255's were plenty big enoug and not look tiny on the rims..that may be a real stupid question.

Roarin_8

iTrader: (5)

It's either the 255 or the 275, I don't think that there is a size inbetween. And for an 8.5 inch rim, I think that the 255 would fit ok. I think that there is a sticky on this.

Yup there is, here is your info:

Front and Rear

7.0" ..... +35 to +40 mm .... 215, 225, 235
7.5" ..... +35 to +45 mm .... 215, 225, 235
8.0" ..... +38 to +55 mm .... 225, 235, 245
8.5" ..... +38 to +45 mm .... 235, 245, 255
9.0" ..... +38 to +56 mm .... 255, 265, 275
9.5" ..... +38 to +56 mm .... 255, 265, 275
10.0" ... +38 to +48 mm .... 265, 275

99PewterTransAmGA

Thanks man.

Roarin_8

iTrader: (5)

No prob