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Originally Posted by lemans4.8
ok guys, just talked to my friend who is a tech at bmw.... apparently, the computer pics up the "info" from somehwere near the hub area (forgot the actual name) but it's close to the tpms in the E53 so going from 17's to 24's would not make any difference to the computer.... just the quality of the ride and height!!
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Wow! I would have never guessed that.
Actually, the more I think about it how can that be true? The overall size of the wheel with tire is going to affect the speed. The computer would have to compensate for overall wheel & tire size. How can that be possible? How can it be done without the computer knowing the overall size of the wheel/tire?
