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Winter Tire size, 255/40/18 is fine?

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Old May 10, 2011 | 09:51 PM
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From: Seoul, Korea
2011 C63(Euro-spec)
Winter Tire size, 255/40/18 is fine?

Hello.

I know it's spring but one of my buddy is selling his 99% brand new winter tire from his Porsche.

It's 235/40/18 & 255/40/18.
I know fronts are fine but rear tires are little tall for C63.

Just wondering if this set up is fine? or ESP will engage often?
Should I just pass the deal?


TIA!
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Old May 11, 2011 | 10:05 AM
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Ideally, you want to use skinny tires in snow that cut into the snow, and place more pressure and weight on a smaller surface area to get better traction in snow.. 235, or even 225 all around is what you want for snowy areas.

Go read this.. http://www.tirerack.com/winter/tech/...jsp?techid=126
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Old May 11, 2011 | 10:10 AM
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I ran 235's all around on stock wheels last year and it looked a little odd. Going to try and find 255's for the back this winter. Also managed to rip right through the rears in like 3k miles.
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Old May 11, 2011 | 10:21 AM
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i run 225s on all corners.
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Old May 11, 2011 | 10:27 AM
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It's winter.. your not exactly going to be racing it (well I hope not).. at least not in the palces where winter sucks.. ie the North East... go with the most narrow tire possible for the duration, or you will just end up spinning your tires alot and eating them up much quicker..
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Old May 11, 2011 | 03:40 PM
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fellas, not that your width comments aren't valid but I think the 40 (vs. OEM 35) sidewall issue is the OPs concern.

And I unfortunately, I don't know the answer.
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Old May 11, 2011 | 09:09 PM
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Originally Posted by wadgras44
fellas, not that your width comments aren't valid but I think the 40 (vs. OEM 35) sidewall issue is the OPs concern.

And I unfortunately, I don't know the answer.
Yes, I meant the sidewall profile.


Anyone?
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Old May 11, 2011 | 09:21 PM
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Originally Posted by jwkim80
Yes, I meant the sidewall profile.


Anyone?

You'll be fine, if they were 45's the profile percentage would be way off. I have run winters that were different marginally. Any tire shop should point out what is right or wrong. I thinkg it's fine.
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Old May 11, 2011 | 09:53 PM
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Ran 235s. I don't know how much snow u get but 255 is not optimal. Get a wheel/tire combo for the winter. Also good because u can rotate as well
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Old May 15, 2011 | 09:06 PM
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Will 225/45/17 fit ?
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Old May 16, 2011 | 12:47 PM
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Only if you have 17" rims.. I would not put those on the 18 or 19 AMG rims that the AMG's come with.
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Old May 17, 2011 | 03:35 PM
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Originally Posted by jdbassman
Will 225/45/17 fit ?
I could be wrong but I doubt 17" wheels will clear our BBKs...
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