Watched a car at the track, 3500 LBS SS spring on a Demon, runs 11.20's with BB. Car seemed to hook well on a 10 1/2 or 11" slick. Car is up for sale. I'll be throwing at least 500-550 Hp. Does a wider tire help with more HP? Tires need to be changed. It's tubbed. If I buy it I'd like to make any changes over the winter and just tweak it come race season. I don't need to spend $ changing everything. This will be a good bracket car in the 10's.