Tyre size limitations for stock 18x7 GTB wheels

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Tyre size limitations for stock 18x7 GTB wheels

Postby Mahtava » Wed Mar 14, 2012 5:01 pm

I'd like to know if anyone has run 225/40/18 or 235/40/18 on the stock GTB wheels which are 18x7?
I'm keen to put wider tyres on the stock rims but am unsure about the logistics involved...
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Re: Tyre size limitations for stock 18x7 GTB wheels

Postby bates91 » Wed Mar 14, 2012 5:20 pm

previous owner put 235/40r18 on mine, no issues at all
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Re: Tyre size limitations for stock 18x7 GTB wheels

Postby rooby » Wed Mar 14, 2012 6:34 pm

This page says 225s are great and I've seen a number of people say the same.
235/40/18 are closest to the diameter of the oem ones and if they safely fit then they'd be the best option I'd say.

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Last edited by rooby on Wed Mar 14, 2012 6:37 pm, edited 1 time in total.
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Re: Tyre size limitations for stock 18x7 GTB wheels

Postby SH30RB » Wed Mar 14, 2012 6:35 pm

a 235/40/18 would be the cheapest option of all as they are commodore size
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