I've been doing RC stuff for over 15 years now, but my first on-road (4-tec 2.0) vehicle will be arriving today. I plan on dropping a spare VXL system I have lying around into it first thing.

I'm not at all familiar with foams (outside of in the context for crawling) in any capacity. Are they preferred over rubber tires? Where's a good place to search for/buy them? How do some foams differ from others? Basically any info to help a car noob out would be appreciated.