Quote:
Originally Posted by Billfitz
The limit is based on the speed rating of the tires.
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My tires are rated for up to 180 Mph because they are pirelli p-zeros, same ones as on the Ferrari 458. However, the door jam indicates at standard tire pressure you should not exceed 100 mph. There is a higher tire pressure recommended for speeds above 100 apparently. Also, if the customer decides to upgrade the tires they should be able to set a higher speed limiter via the i drive. 133 MPH seems like a very low rating for sport sedan tires.