hi fiero brother i speek french and will try to ask my question the most clearly possible .i know you have two size of tire for the fiero gt i have a 1987 gt and i have the recommended tire size if i remember 205 front and 215 rear but what i want to know is does it have a difference of the wheel size between front and rear wheel. if you remove the tire the 4 wheels will have the same width .... etc ?????

87 GT wheels did take two sizes of tires, you are correct 205, and 215.
although you could use the same size , the difference was just for looks.
The rims were identical front and back 7 inch width. Only on the 88 GT was
the rims different fronts were 6 inch width while backs were 7 . hope that helps.

quote Originally posted by kendallville: 87 GT wheels did take two sizes of tires, you are correct 205, and 215. although you could use the same size , the difference was just for looks. The rims were identical front and back 7 inch width. Only on the 88 GT was the rims different fronts were 6 inch width while backs were 7 . hope that helps.

so if i installed tires 3 years ago the garage that install the tire cant be wrong because the 4 wheels are identical .
without the tire it will be perfectly identical right ????
many thanks for your help

Yes , all are identical. I am currently replacing my 87 steel rims with 87 GT rims.
I don't have to worry which one goes where because the are the same.
Unless like I stated earlier you have 88 rims they were different. but it is always good to ask.

quote Originally posted by kendallville: Yes , all are identical. I am currently replacing my 87 steel rims with 87 GT rims. I don't have to worry which one goes where because the are the same. Unless like I stated earlier you have 88 rims they were different. but it is always good to ask.

thanks for the clear reply because i speek french i want to make sure i understand clean and clear thanks again

You are welcome, I know I don't like it when people give me answers that I can't understand.
Nice talking to you

Staggered tire sizes aren't just for looks. Larger diameter wheels on the rear helps to reduce understeer to some degree during hard cornering. Progressively reducing the front diameter and increasing the rear diameter will at some point cause oversteer.