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Originally Posted by breytonX5
Guys guys we're driving a heavy truck with a relatively high center of gravity, not a sport car. So get whatever wheels you need. Honestly this conversation about weight savings on a vehicle this heavy doesn't really make any sense...
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I agree... that was my intended point in this semantic discussion, really.
That's why I don't think that smaller diameter-than-stock 17" wheels/tires on an X5 are a viable consideration for someone who just wants to extract better street handling, but not try to turn their rig into some quasi-track monster. I can't imagine that a few extra lbs of additional rotational mass per wheel/tire would result in a handling detraction on an X5.
As for whether 21's or 22's would be 'better' handling on the street than 20's... don't know about that one. I DO know 20's feel much more crisp than 18's, but maybe 20's are the sweet spot. (I personally wouldn't want to go any lower profile than 20's regardless due to road hazard damage concerns... )
Has anyone driven an X with OEM diameter 21's or 22's that can compare them to 20's?