No, when we installed them with new wheels tires on our JrFuel car we never did any back to back runs. Just followed the sugestion of Neil & Parks, and I sell them for the racers that want the most out of their cars.
I can tell you when we have our car up on pro-jacks with the front wheels in the air, they seem to spin for ever , it's all about rolling resistance.
One of my customers posted on FB a video of his front wheels spinning for ever because his shop was hot and he had a floor fan blowing on / at his car and the it just kept spinning.
Of course we put some cermatic in our rear end, more expensive, but trick.
Jon
