My car always wears the rears faster than the front's, for some reason the Kyosho car does this, many people that run the car see the same issue. It really doesn't effect the handling until the difference is extreme. The car will get loose when the difference becomes too great, it's only until you are 35-40 minutes into a main with high tire wear. For some reason at Cincinnati in qualfiying my front's were wearing more, but in the main, the rears out wore the fronts considerably. I use to worry about this, but have come to learn that it really doesn't seem to make a bit of difference on the track. I agree with Chicky's commentary on rear/front tires. It's bad for the series.