You need to check the ratings of the tires and find out what you want in a tire Steve. Do you want long life in tread? Do you want ultra grip? weather tire? All these determine what tire you will buy. On my Z I run a 280AAA tire just because I want a dam good sticky tire. My tires are so sticky that I can take the Knightdale Turn Loop at 80 miles from 440 and not even slip or break away. Now if you go with a 400AAA tire then you are looking for the tires not to have any grip to them at all and basically try and get 50,000 miles out of them. Sucks in weather and what not. So again you are better off looking at a tires rating and finding out what price point you want to go in and look at those tires ratings.
