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Winter tire question

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Old 11-20-2012, 10:20 AM
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CLE
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Default Winter tire question

I have a 2008 535i w/ sport package. Recommended winter tire size is 245/40-18. Will 245/50-18 be OK, or is that too much sidewall?
Old 11-20-2012, 11:23 AM
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Too tall!




It will also affect speedometer accuracy ...
Old 11-20-2012, 11:48 AM
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Thanks
Old 11-20-2012, 01:05 PM
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Default A silly quarter inch

I have another one for you Luigi.

You and I both have '07 530xi's. So you know the correct tire sizing for snows is 225/50/R17. I'm eyeing a good price I'm seeing on Craigslist for a set of Mastercraft snows in 215/50R17. What am I going to experience if I go with a quarter-inch narrower tire?
Old 11-20-2012, 01:20 PM
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I think that makes the diameter smaller too, if the "50" stays the same.
Old 12-19-2012, 06:40 AM
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CLE
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OK, I finally found a set of 245/40-18 winter tires, but the wheels have an offset of 15. Will these be OK, or do I need spacers?

It's a 2008 535i w/ sport package.
Old 12-19-2012, 07:33 AM
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Your sidewall will change from stock 50% of 225 -> 50% of 215.

Originally Posted by jayarras
I have another one for you Luigi.

You and I both have '07 530xi's. So you know the correct tire sizing for snows is 225/50/R17. I'm eyeing a good price I'm seeing on Craigslist for a set of Mastercraft snows in 215/50R17. What am I going to experience if I go with a quarter-inch narrower tire?
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