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      09-08-2012, 08:35 AM   #6
pbonsalb
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Drives: 08 E90 M3, 99 E36 M3 Turbo
Join Date: Feb 2011
Location: Concord, NH

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Periodically, Grassroots Motorsports tests track tires. I think they have done so within the last year or so and that the test included the R1R. I don't recall it being the best choice, but cannot remember all the details. They also have tested the most popular street/autocross tires.