The Byron Onroad Challenge this last weekend was a good test for tires. Sweep tires held up to the challenge. I qualified 2nd and finished 5th after running out of fuel twice, need to calculate run time a little better next time. The 10 minute qualifiers and hour long a-main were a good test for traction and wear. For the main I went with a 55 LF, 50 RF and 45 rears. These held up for the entire 60 minutes with very good traction. Thanks Sweep for the awesome tires.