Sooo I think its time for new tires! About one every 4 knobs on the sides are broken off and all the knobs are rounded off and about half the height of a new knob 
I got my 200 this summer and it came with a used tire and I've never bought a new one
The only place I ride is around my track and its all clay. In the summer its super hard and in the winter its mud and there really is no in between. The tire that I have doesn't have enough traction for the mud or hard packed dirt. So my question is, whats your favorite tire with the most traction and should I go to a wider tre? Also, should I get one tire for winter and one for summer? I don't really need a front one but I think I'll replace it anyways.
Thanks!
Nolie :)