My wife just destroyed 2 PS2's with a giant invisible pothole. <IMG NAME="icon" SRC="http://www.vortexmediagroup.com/images/banghead.gif" BORDER="0"> My tires have about 12000 miles on them so there's a fair amount of wear. I'm thinking I should replace all 4 tires instead of just the 2. What's the general consensus about replacing individual tires? A $500 mistake is one thing, but when it turns into a $1K mistake, it hurts.