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Quick rear tire size question?

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The stock rear is 120/90/18, I am ordering the TW302 and it's a 120/80/18.  I know what the numbers mean, and don't believe this will make any notable difference.  Am I correct?  Thanks

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The tire's overall diameter will be 12 mm less... not a big deal.  Your final-final gearing will be slightly lower, for the same RPM/gear as before you'll be traveling slightly slower now.

Edited by bmwpowere36m3

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