I have had roadsmarts on my 1250 for about 5k miles and Ive noticed that the front one is wearing much faster than the rear. Obviously its more than mfg hype about the dual compound tires longevity, I thought that they were both dual compound but after researching I found out only the rear roadsmarts are dual compound. Ive got a ways to go before replacing the front but the rear looks **** near new. I check my pressures regularly and run 36-42. I bet I use two fronts to one rear if the wear cycle continues. I guess thats good as the front wheel is very easy to remove and the tire is cheaper.