super swamper tsl\'s I have a set of 35x15x15 tsl's on 15x10 rims. My question is what should the air pressure be? I have them at twenty five lbs. right now and they look like they are wearing on the middle of the tread, my past expierience is that the center tread would wear if they have too much pressure but at 25 psi, I find that pretty low. please help I don't want to ruin a good set of tires.