I am 71 years old and have had several 4 wheelers, all 4wd. I have some shoulder injuries as a result of service in Vietnam and it is now hard and it hurts to try and maneuver and turn the 4wd. I bought a used 2010 Yamaha Grizzly 550 with power steering and it is easier to turn. However, I don't like the big 4 wheelers. I like the smaller 250-300 cc units. I just bought a Suzuki Quadrunner 250 with 2wd that turns pretty easily and I think I will be able to handle it. However, it needs rear tires and I am looking for some advice on which tires to buy. I know that there are hundreds of different ones. It now has Carlisles on it, but they are pretty worn. I will be riding mostly on trails but there will be some mud occasionally and some pretty steep hills. Also, this is my first 2wd and I hope that I will find that it fits my need as I have always had a 4wd. It is 5 speed, foot shift. Any advice on tires, or other advice, will be greatly appreciated.