Holiday Greetings: I was told there are approx. a 1/2 doz. tires to choose from for the CH80 elite. Any ideas on the prefered tires to choose from? I have put approx. 2000 miles over the past few months and am experiencing alot of wear on the rear tire. I realize the extra weight distibution on the rear since the motor is rear mounted I asume cause the rear tires to wear sooner(2\