Rich - the Kumho Ecsta MX prices for 17" OEM rims... $104 front (225s) and $123 rear, for $454 total (Tirerack of course). Heck of a deal!! I just put 14.5k miles on a set and 3 track events. Best features: price and predictability. It's not the stickiest tire I have had, but it's a very close 2nd, and it's so predictable that I find them a great overall tire for mostly street/some track. As with many other types of tires, they do begin to tramline a bit with age. The only negative I can think of is that the front wore quicker than I expected, as with other tires I have been able to go 2 sets on the rear to one on the front. But for the price, it's a moot point.