Two reasons I would not use this stuff:
1) It will eventually disable the sensors. I have heard of people using fix a flat and having the sensor live for a while (1 month -2years), but why risk it in all four wheels at once.
2) The added unsprung weight is a killer in a sports car. Weight is the enemy and unsprung weight is the worst weight. It will affect the suspension response, acceleration, ride and handling.