Factor.. Like Mr. Mint ,I autocross my car. The tires I use to get to events double as my wets for racing. I have the RE-11 now and might try the RS-3's next. If you are running a 300 Treadwear tire at Autox you are not winning. So that number I know nothing about helps me win. Like I said in my post, if your just out Posing they are fine but I can't use them.