JConcepts Double Dee's (2wd, 4wd, and Truck) and Rounders (2wd) will be the tire of choice at the 2008 Vintage Off-Road Nationals at Radio Control Hobbies & Raceway in Connecticut in September!
http://www.rchr.biz
Here is a video of me (expert driver) running a 15 year old RC10 Team Car with a 17.5 brushless motor against the Amateur 4wd open class....
http://www.youtube.com/watch?v=qPmuohuUBQQ