Grassroots Motorsports Magazine is just $8.15 for 1 Year at Best Deal Magazines, March 17th Only – A Retail Value of $47.92 – with Coupon Code 15SS0320.  Grassroots Motorsports Magazine is THE hardcore read for the true sports car fan. Readers get the earthy “how-to” do-it-yourself articles they’re searching for to provide practical, real-world tips on restoring, modifying, and improving their cars.