Chains aren't a bad idea although I will be driving on and off of asphalt. The lawn tractor I have now just spins one wheel or the other when I try to drive it up hill under load. I'm amazed I haven't destroyed the transmission on it, but perhaps the belt just slips if it gets overloaded. I'm hauling a large garden cart's worth of firewood. I definitely don't have the money for one of the top dollar JD tractors (455 etc). I was hoping for more of a poor man's solution to the problem. I just found a JD 140 (from the 1970's) on craigslist and it appears to have individual wheel brakes on it. I suppose that would be an intermediate option instead of the locking diff. Can anybody comment on these tractors?
I had a 110 which is the same tractor with a smaller engine. It works great with 4 wheeler tires. I put ags on the front to help it steer with a heavy load. Make sure the variator isn't stuck. Cost me $200 to fix mine. The 140 may have been hydrostatic in which case it won't have a variator. The hydraulic lift is nice.