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Old 04-06-2009, 07:21 AM
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255/55/18--factory size-reduce to 45 aspect

What do you think about going from 55 factory aspect to 45? will it improve handling or detract? Is it adviable either way?

It would lower the center of gravity and improve. right?
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  #2  
Old 04-14-2009, 10:23 AM
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positives:
handling
feel
lighter unsprung weight

negatives:
wrong rolling diameter - odometer/speedometer will be off
could cause issues with esp / x-drive system
not sure how vehicle NAV responds when using wheel sensors

Overall:
I don't think it's worth it to change the rolling diameter. You can drop to 45's by going a wheel size larger, thus reducing the tire sidewall
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Old 04-14-2009, 10:26 AM
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Quote:
Originally Posted by anerbe
positives:
handling
feel
lighter unsprung weight

negatives:
wrong rolling diameter - odometer/speedometer will be off
could cause issues with esp / x-drive system
not sure how vehicle NAV responds when using wheel sensors

Overall:
I don't think it's worth it to change the rolling diameter. You can drop to 45's by going a wheel size larger, thus reducing the tire sidewall
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Old 04-14-2009, 10:59 AM
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Not to be a cynic, (but it comes easily), did the OP not like
the nearly same responses to the same question, 2 weeks ago?

http://www.xoutpost.com/x5-e53-forum/...5-45-18-a.html
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