These tires are the worst tires that I have ever ridden on. I mean the grip on them is descent but here is the problem. These are the oem tires that come on my bike. I just clicked 650 miles and they are already down to the wear indicators on the sides and the middle. I haven't even gotten on the power yet because of salt on the roads, the road temps, and I am still breaking my bike in. I would not recommend these tires to anyone unless you want to change your tires all the time. My riding style is in the mountains in the twisties. I have never gone down the interstate or done a burn out. I just can't see wasting my tires like that. As far as my psi I run 34 in the rear just like i do on my pp's and the pilot powers are a lot better and so is the tire life. I am just really disapointed in these tires and Brigestones tire life.