04-15-2024, 04:12 PM | #1 |
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Modern Spare uses 135/70 R18 as the spare tire in the kit they have for the m440i. I put the sizes into the comparer and wanted to know if the overall circumference of the tire would cause an issue with the xdrive system? If so, should I change the doughnut out with a 145/70 R18?
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04-16-2024, 08:17 AM | #2 |
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The circumference difference is > 1%, so theoretically, yes, it would be a problem for xDrive. Then again, a spare is supposed to get you to a tire repair spot, not driven indefinitely, so I doubt there will be any damage. 145/70-18 is within the 1% margin.
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04-16-2024, 07:19 PM | #3 | |
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Quote:
Thanks for your input. |
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