spins

this just started happening last week. It is weird. I'll push the starter button and can hear the starter motor spinning, but the bike wont fire up. on one occassion, I pushed the bike forward an inch or so and the bike fired up. However,on a separate occasion, I tried doing the same thing when...

My bike came with an IRC tire on the rear. Last night as I was trying to launch a bit from the stop lights, I discovered how easily this IRC spins. I was probably turning maybe 4-5k rpm. I hate to start a tire (or oil) thread and I've read up on here about various tire brands, but I didn't...