hi all, i ahve a 2001 civic and the rear tire on the driver's side is leaking air. every few weeks or so it would go from 33psi down to about 25 while the others remain the same. i rolled over a nail on that tire once a few months ago. anyways, the tire size is 185/70-14, are there any good tire recommendations? must have good traction on snow and rain and cannot be too expensive. i guess anything isb better than the OEM firestone crap.