0-60 Time Testing - Does The Downhill Grade Matter? In my 0-60 time pulls I typically record the acceleration at an on-ramp which has a slight downhill grade. In order to see how much this affects my times, I decided to run a test. Based on this testing, my times are accurate with 4-5%, which is pretty good considering weather, traction, and shift times could easily account for a 5% difference. I'
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