On my ’88 the PO had installed 25" tall tires on the bike. It has 25-9.5X11’s on the front and 25"-12X11’s on the rear. From what I understand in my reading here and other places – the tires should be okay in terms of stress on the drive train as they are 1" taller than stock (recall stock front and rear is 24-9X11). As this bike full time 4WD, I am presuming the same dia tire at 25" is okay. The tires are the Super Swamper Vampires. I am thinking the tire is great for bad conditions, but not so good if I want to use the bike around the yard. What would be a better "overall" tire, for driving on everything from grassy lawns to dirt/rock roads to backwoods trails that do include muddy conditions…