JG Pasterjak
JG Pasterjak Production/Art Director
9/23/13 12:06 p.m.

In our December 2013 issue, we went in-depth on how to calculate your car's drag by performing a coast-down test multiple times in both directions on the same stretch of road. A series of calculations based on the time your coast-down takes then allows you to see how many pounds of drag force your …

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