What type tire are you guys running on the rear of your hardtails? I rode hardtails when I was in my 20s now I'm in my upper 40s. My 49 pan I bought last septenber seems very hard in the rear end. It has a old Avon Roadrunner on it. So does any one have any advise on a better riding tire? I do realize nothing going to make it ride like shocks.