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i am thinking of selling my stock 18" m3 wheels and getting some m68s for autocrossing and racing. Just want to know how much weight i'll be saving
 

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M68s weigh 22lbs each (I think there's a half pound difference between the wider rears and the fronts). The stock 18" M3 wheels (fronts) weigh 26 pounds each. That's around 4 pounds of unsprung weight at each corner, 16 pounds all around. That's a nice weight loss, I'd say.
 

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SDpnoy said:



22lbs with tires or no tires?
of course without tires... the tires themselves are around 20lbs or more...

you'll need spacers for the rears, because they won't fit... I'd suggest you keep your stock rims and save up for a set of track rims like bbs rcjs or rgrs
 
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