A good all around tire that won't tear up grass is the Trailbuster, not great in any respect, but a jack of all trades, and a great work tire. A better tire is that heavy duty V tread that Carlisle produces, the one with the knobbies on the sides and the big Vs, not the one with the single line Vs and the soft knobbies, works excellent in snow on my 250es, really good in mud, nice on grass, and makes an excellent all around tire.
This is my trike. There are many like it but this one is mine. My trike is my best friend, and it is my life. I must master it as I must master myself. My trike without me is useless. Without my trike, I am useless. I must ride my trike true. My trike and I know that what counts is not the amount of miles we ride, but the time we ride together. My trike is human in it's own ways, therefore I will learn it as my brother. I will learn it's weaknesses, it's strengths, it's parts, and it's soul.