from my personnal experience. back in 2002, a near 1-mil+ $ indoor facility opened in Tuscon, AZ (still open). to keep new racers from getting scared and keep it simple, the shop decided to do rubber in stock and foam in mod. i ran the rubber until we had guys who bought RTR TC3's that had foams on them were allowed to run. we complained and were told the class would be mixed because the RTR's had foams and didn't want to buy different tires off the bat. All jumped to foams. on sedan, i was one of many who didn't like them, the set-ups online didn't help and wasn't used to what it takes to run on carpet fast. most were traction rolling, massive oversteer, etc. i was against foams on carpet. i ended up having to hunker down, work on my car and radio settings. but back them the FT-TC3 and XXX-S Graphite were ran on carpet or asphalt.
alot of carpet tracks, most recently due to sedan racer demand... run rubber.
some even make everyone run the same tires (spec). from what i have heard some racers say, they beleive, that's the reason the european drivers are so successful lately on asphalt and carpet...it's because they run the same car on both surfaces and run predominately rubber tires: rain or shine, hot or cold weather indoors/outdoors.
- you can basicly run the same car on both carpet and asphalt
- one can basicly use the same set-up you would use on asphalt
- setup stays the same due to tire size staying the same
- gives the perception of equalness, fairness, and cheaper racing
- depending on the carpet type, even thought tires aren't worn to the belt,
those who change out rubber with the same frequency as if one was
running foams will still fair the best
- cars run overall slower due to lower corner speeds, they drift more
- these days it really helps to have a carpet specific sedan
- car set-up is more critical and needs changes as tires wear, causing more
work in this area.
- many have issues getting their cars to handle due to lack of experience
- gives the perception of being labor extensive and costly
- tires wear away, chunk, etc.
- cars run slightly faster, with the wrong set-up can be a nightmare to drive
i currently prefer foams for carpet, and rubber for asphalt. i recently have gone to a asphalt track that runs foam tires on 19T sedan class (no other electric sedan classes). beside tire wear, it is a blast and fast. the 19T cars with foams turn more laps than the nitro sedans. foams on electric?...reason why...well, i asked because some run both classes nitro & electric, and don't want to have to deal with different types of tires. they also don't use Jaco, TRC, Parma tires, that can be $14-$21. they all run the shore rated nitro tires they get for less than $9.00 a pair. my first race there with them i ran rubber and got my butt handed to me, showed the next time and ran foams....i handed it back