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blackdbl0si

Down classing vs up classing

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blackdbl0si

Question for you guys. A car running TTE as a base class with no points to start, in this case a 99 Miata. If the car is otherwise stock, and running 205/50/15 tires, can the car class and run in TTF?

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mweber

Yes it is possible but you need to be aware of a few things. Just because the car is stock doesn't mean you don't have to take points for certain things. You need to compare the car to the BTM (Base Trim Model) car. LSD was not on the BTM Miata, so if the car has an LSD, it is +3 points. You also have to look at the adjusted weight to horsepower. The limit for PTF/TTF is 19.5 to 1. So, if the minimum competition weight is 2405 lbs, it can only make 118rwhp to be legal for F.

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