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  1. M

    2017 RC track/Road Tire. Q3+?

    Yes a tire size question. This forum is difficult to find definitive answers. Or maybe I'm just stupid. 2017 rc390 track and street bike. Running decent pace. Needing new tires. I'm liking the Q3+. I've searched a bunch of threads and see conflicting information with 140 vs 150 rear. The q3+...
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