My F3L has thousands of miles on the Conti's and a Yokahama S Drive in the rear. The fronts and the back aren't fighting because they are two different brands. I will say that these tyres have made the most significant improvement in ride quality, smoothness, no vibrations, hold the road like there's no tomorrow. I keep 15lbs in the front and 18 lbs rear. I would do it all over again when these are worn. Just my 2 cents worth.