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Old 11-13-2019, 09:53 AM   #1
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Will my Blizzaks fit?

Howdy,

Buying a pristine 2000 S and selling my F30 328i. For the BMW, I have a set of 225 45R18 Blizzaks with one season's wear. The Boxster is currently fitted with original 18s.

Can I fit these tires OK? I can't imagine the 45 profile would be an issue, and the front is the same as original, but what about the rear? I understand that it's best to have a slightly narrower than normal tire for winter anyway.

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Old 11-13-2019, 06:17 PM   #2
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They would fit the front wheels fine, but I doubt a competent tire installer would put that small of a tire on the rear wheels.
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Old 11-14-2019, 06:40 AM   #3
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Assuming no other difference between 17" and 18" rims besides the diameter (double check), I run 205/50R-17, 225/45R-17 Blizzaks on my winter rims. No issues, but the rears definitely look very narrow. But you want the tires to be as narrow as possible with snow tires, so they cut instead of plowing through the snow.
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Old 11-14-2019, 01:32 PM   #4
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Difference is 1" in diameter: https://tiresize.com/calculator/

Narrower is better on ice: https://blog.tirerack.com/blog/hunters-ramblings/why-are-narrower-tires-better-for-winter
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Old 11-15-2019, 12:41 AM   #5
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I run 245's fromt and rear on the stock 17's. Yes, they are narrow at the rear, but as Rick says it works wonderfully.
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Old 11-22-2019, 02:34 PM   #6
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Thanks all!

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