Wheel and tire sizing - Pontiac G6 Forum
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post #1 of 5 (permalink) Old 06-25-2019, 01:39 PM Thread Starter
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Wheel and tire sizing

I found a pretty good deal on some wheels this week to replace the two bent ones I have, and am needing to find out if my current tires should fit on them. I currently have the 18" OEM 5 spoke silver wheels, and am running at 225/50R18 on them. The wheels I'm looking at are DIP 63 18x7.5 wheels with I think a 40mm offset. From what I've found, it looks like the 225's should fit well on the 7.5 rim, and I think the OEM 18"offset is 41mm, so the stance shouldn't be too different. But, what else should I be looking at to see if they'll fit? Or, does it sound like they'll fit?

~Ken
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post #2 of 5 (permalink) Old 06-26-2019, 06:56 AM
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Wheel swaps require tire size, offset, width, and of course bolt pattern.
You're almost there.

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post #3 of 5 (permalink) Old 06-26-2019, 07:46 AM
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225/50R-18 sized tires are approved for a 7.5-inch wide wheel and the +40mm offset works too, so as long as the bolt pattern and hub bore are correct, you should be good to go.
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post #4 of 5 (permalink) Old 06-27-2019, 09:06 AM Thread Starter
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Got the wheels and brought them home, as I'm cleaning them up I realize there's a flat spot on the outer back edge of EVERY single wheel. Just small enough for me to not notice until I got them home and rolled them on a flat concrete surface. So much for getting the tires transferred to a solid wheel, though they were only $50 so not a huge loss. Guess I'll keep looking
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post #5 of 5 (permalink) Old 06-27-2019, 09:39 AM
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Sorry to hear about that, Ken.

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  Pontiac G6 Forum > Technical Discussion & Modifications > Handle It! - Suspension, Wheel and Tire Modifications

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