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I had 16'' wheels with 205/55R16 tires and switched to 17'' wheels in a staggered configuration 225/45ZR17 (front) and 245/40ZR17 (rear).<br>
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I definitely noticed improved grip. However, the car seems more sluggish than before. <br>
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Is this normal? I guess with increased grip (= increased friction) and increased wheel weight and size results in lower performance. Anyone know how much performance difference to expect?
 

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the difference may be in the weight of the wheel ... more

If you purchased a heavy 17' wheel the added unsprung weight would make your car slower during acceleration and braking but the steering response would be greatly improved.<br> <br> Luke<br>
 

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Re: the difference may be in the weight of the wheel ... more

The steering response is definitely much improved.<br> <br> I didn't really compare wheel weights before mounting the new wheels. <br> <br> The original wheels were the 16'' 2002 CLK 320 OEM wheels. The new wheels are the 17'' multi-piece AMG Styling III wheels. No doubt the new wheels are heavier. <br> <br> Are they that much heavier so that there would be a noticeable difference in acceleration?
 

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Luke, is there a chart of wheel weights we can look up?

I read somewhere that 1 pound of additional wheel weight equals 8 pounds or soemthing like that due to rotational force.<br> <br> Anyway, what's the difference with going from 16' steel wheels (C240) to 17' AMG one-piece (yeah, there's four styles, but they'd be more or less the same, right?).
 
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