Hmmm, car has traction for a few laps then loses grip? Not a clue. I believe they are new BWA tires I was going to use on the abandoned VRAA car, sanded to 1000 grit wet/dry smoothness. Maybe they aren't smooth enough and are picking up dust or rubber from the other tires? Doesn't really matter, this goes into my books as a totally just for fun, no pressure proxy. I figured sponge tires would be the fastest solution, but I didn't think the car wouldn't look right, and that was half the fun...fat drivers on skinny tires after all!
Don M