I'm running 17" wheels and I do auto-x but I'm nowhere near competitive....fastest guys run lightweight 15's with contact paches twice as wide as mine. Reason? Smaller wheels= smaller rotational mass= better acceleration + shorter gearing. Tires are also much cheaper.

Since you have the 17's anyways, I would get some cheap lightweight 15's (rota's?) with sticky rubber as your auto-x/track wheel. Then you can be competitive at your local auto-x but still be able to roll around "in style" on tha streets when all is said and done

I still have the iCy hOt stock gsr blades so I'll probably be using them to auto-x once I get some decent tires on them.


Shingo