Originally Posted by skengines
Is it necessary to use tire compound like Paragon, when it comes to Nitro racing?
I know that foam life depends on driving style, foam quality, etc...., but when the foam is worn out to the point of no use, can I just replace the foam and use original wheel?
Is there a rule to go by when choosing shore size?
if it is a sanctioned race(ROAR,IFMAR,EFRA),it is illegal to put traction compound on your tires.
it is possible to buy "donuts"(tires without wheels)and glue them to old rims but it is a bit tough to get the residual tire foam off the old rim and you have to get the glue on perfectly to avoid the foam from seperating from the rim.
the shore is dependant on a lot of factors. the best way to get it close is to find out what other racers are using at your track with the same car and use that as a starting point.