tirerack is having a deal on the 712s currently but normally it's about $10 per tire more for the yoks and less on the 901s. the ratings are on tirerack are good for the kumhos, but talk to anyone who actually autocrosses or drag races with them. they suck, what do they expect it has a 340 tread rating which means hard rubber compound. the 901s are 200 and the yoks are 280.