Quote:
Originally Posted by jrainlay
Not necessarily... With properly spec'd tires, the net wheel/tire diameter with 19s should be identical to the 18s; therefore, there should be no noticeable deterioration in braking and acceleration due to larger wheel diameter (and no increase in speedometer error). Tire sidewalls will, of course, be lower profile and this can lead to some increase in ride harshness; however, if you choose the right tires you can minimize this issue. When i moved up from OEM M style 18s to 19s, I fitted my new CSLs with Conti Extreme Contact tires which resulted in no noticeable change in ride quality vs. my OEM Contis on the 18 inch M rims.
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Negative. The weight of the 19's is pushed further out to the edges of the wheel/tire combo vs 18's. Even if both weigh the same, the 19's will have more rotational inertia due to the distribution of the weight. Noticeable or not, it's something to consider if going for ultimate performance.