2001 Grand Prix Gt wheels and tires

[AlexR]

Will 255/45/R18s on a 8.5inch wide wheel fit on a stock suspension 01 Grand Prix?

[Psych0matt]

It should, but backspacing will be an issue, and you will probably rub on bumps

[Grandprix1]

8.5†is 2 inches wider. I wanted to run 17†c5z wheels on mine which were a 9.5†wheel. Everyone said it wouldn’t work and I’d need to roll the fenders and use huge wheel spacers. I kinda don’t think it will. If it does work it will be damn close

 

 

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[Psych0matt]

basically the 2" wider is what would potentially cause rub (ie needing to roll the fenders), and depending on the backspacing you'd either be in the wheel well way too far, or you'd need spacers. I don't know enough about those wheels to say, but no matter what it's going to be a pain to get them to fit. Not worth it IMO. Find something similar in something that fits out of the box