Rear Lower Stress Bar Feeler

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Well, those tires will be fine as an all around commuter A/S tire. On a race track they will overheat and get greasy quick. You will not generate the lateral Gs necessary to thoroughly test your lower stress bar design on those tires.

If you plan to do track days, find a set of takeoff wheels and mount some Extreme performance street tires that add monstrous dry grip and can really take the heat of continuous lapping. They will also make your track day experience more enjoyable.