I am sure this must have been asked before, but does anyone have any suggestions for replacement tires for the Yamaha tri zinger or 4 zinger? OEM size was a 15x7.00-6. Only size on the market is a 145/70-6 which is about an inch shorter and really too narrow for a 6" wide rim. Is there anything out there closer to the 15" diameter? I believe the last one made was a Dunlop KT465. I would even be interested in some used ones if they still had decent tread. I would need 4 as I have a 4 zinger. Thanks for the help.