I use a combination of two products, I use Auto Magic (great stuff) to get around the tread and knobs on the side of tire, and then I usually use a gel to apply to fattest part and rest of tire. Works really well and only a little access spins off but has been combo of all the different products i have used.
Here is the link for Auto Magic
http://www.automagic.biz/dressing.htm
Here is the new spray gel that i really like
http://www.eagleone.com/pages/produc...=1131&cat=5005
I really like the Auto Magic too because it does not eat away at the clear coat on the rims and doesnt stain the drive bad either from over spray. I will do the combo application above every once in a while and use the AutoMagic to do all of tire most of time.