I decided to go with the Hoosier quick time pro's for my new set of tires. I ordered the 27x10.50x15's since I'm running 8" wheels. At 9" tread they are wider than the 28x11.50 ET streets I've been running. How much air pressure to run in the QTP's? I'm not going to run tubes, unless I find I have to. How are the hoosiers at holding air, anyone use or endorse the "coat the inside of the tire with dish soap" method? Do they like a particular "burnout" method (especially when brand new)? thanks.