Quote:
Originally Posted by nikitopo
Acceleration is different with a heavier or larger wheel. Many times it matters even if the weight is similar, but distributed far away from the center of the wheel. Check in last column timings where corner entry speed is larger and acceleration is smaller giving a smaller top speed:
Source: http://www.roadandtrack.com/car-cult...ransformation/ |
For the FRS, you are comparing two different-diameter wheel/tire combos. You are changing not just the weight, but the length of the "lever".
Quote:
Originally Posted by Racecomp Engineering
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This test has two samples with the same outer diameter and the results of those two pulls fall within the "noise" of dyno pulls. My 350Z spent a good amount of time on different dynos and no two back-to-back runs ever matched....even when nothing was changed on the car between pulls.
I'm not saying that lighter isn't better. I personally think getting heavy rotating wheels to turn on the horizontal plane (left/right) is more likely to be felt by the driver than getting those same heavy wheels to move a much heavier vehicle forward.