Am considering the Kumho v700 rear in a 245/40/17 and front V710 215/40/16. Any idea on tire life and TCS issues. The front is 22.8 diameter compared to stock at 23.6. Would like to get 3000 miles with a few track days per year. These tires have a treadwear rating of 30 in the front and 50 in the rear. I would think that it would be a good setup for neutral handling with the more aggressive tire in the front. Ideas?