Thank you! Yeah they sure do,probly pretty close to the weight of Hipers..lol.. I have a set of .125's with rear Hoosiers and front American Racer,plus another set of Razor TT fronts. But the set on it now has the best tread. Rear tire (18/9/10) have a 56" diameter. 13/36 gearing is all I have to play with tonite,if those rear tires dont work out I will have a few other choices as well,in different diameters. Guess we will see tonite,there will be a few fast 4 strokes to compete with. My main goals will be to stay safe and not damage anything too bad. I really only have about 10 minutes seat time on it,in grass and pavement. Getting traction on dirt,on a banked oval,will be a true test. If the track is packed nicely and not to rough the pro-trax will be "ok",I have my stick damper all the way stiff just to slow the steering down some.