Ford Focus Forum, Ford Focus ST Forum - View Single Post - Does weight really matter that much?
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Old 03-08-2009, 08:36 PM   #9
Blackcatn2o
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The thing is with wheels is if you run 15's (less weight an rotional mass) you will have a ton of sidewall flex witch's = slow steering reponds (IMO i hate slow steering respond's), if you have a larger rim like 17's or 18's (will be heavy an more rotional mass to move) you will have less sidewall flex witch = quick streering respond's. It really doesn't matter how hard your sidewall is (on a 15" wheel) you will still have a ton of flex because your tire actually pivot's where the sidewall an rim meets.

If you do alot of drag racing, circle track, rally racing i highly suggest a 15" wheel but if you do alot of road racing, autox, moutain racing go with a larger rim for less flex.
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