The new tire is grooved but that is the only thing in common with the 650/450 tire. The tire has a stiffer sidewall and the tire has a soft feel to the rubber.
In the test the tire was quicker to come in, as in a qualifying run.
The tire did not loose speed as we put 50 laps on the tire. The times reflect a .2 drop in speed over the 50 laps plus did not give up side bite or forward grip. The car kept the same balance throughout the run.
The tire has a slight less forward grip than the F53 but otherwise feels about the same . We saw less overall wear on the tire than the F53 on the 50 lap run.
The test included a 5 lap run, 20 lap and a final 20 lap run plus warm up laps.
I couldn't stand the old grooved tire but I would race this tire. I feel like we should be racing on a true slick but this has opened my mind back up to the grooved tire.
In the test the tire was quicker to come in, as in a qualifying run.
The tire did not loose speed as we put 50 laps on the tire. The times reflect a .2 drop in speed over the 50 laps plus did not give up side bite or forward grip. The car kept the same balance throughout the run.
The tire has a slight less forward grip than the F53 but otherwise feels about the same . We saw less overall wear on the tire than the F53 on the 50 lap run.
The test included a 5 lap run, 20 lap and a final 20 lap run plus warm up laps.
I couldn't stand the old grooved tire but I would race this tire. I feel like we should be racing on a true slick but this has opened my mind back up to the grooved tire.

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