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The Tire Rack's Tire & Wheel Forum
Use this forum to discuss anything in relation to wheels to tires to offsets.
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Old 04-08-2006, 09:52 PM   #1
SSRGT3
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Gary...Need help with M3 tires

Hi Gary,

I have seen your posts here and on Bimmerfest. My question is this, I have the stock M3 19's and I want to run a wider tire. I have seen posts for 245/30 and 275/30. I havent seen any for a 245/35 and 275/35 setup. I ran these figures through a tire calculator and it seems to be okay. What do you think?

Is there any reason why everyone seems to go with the 30 series vs the 35 series. The calculation even shows that going with a 30 lowers the height slightly but also increases wheel gap.

Thanks for your help Gary!
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Old 04-09-2006, 05:07 PM   #2
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30 does lower the height, so going with a 35 will mean you will run the risk of rubbing, especially with 2 or more passengers and/or a drop.

That's why ppl choose 30, it's the safer size.
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Old 04-10-2006, 08:09 AM   #3
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The 2nd part of the size is an aspect ratio and must be lower to maintain the same overall diamter.

More about how tire sizing works here : http://www.tirerack.com/a.jsp?a=BN4&....jsp?techid=46
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Old 04-12-2006, 12:56 AM   #4
SSRGT3
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Thanks guys for all your help!
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