I think 48" would be perfect, matches the track width of the tractor. Just watch the weight of the mower, that would be the biggest factor, but power-wise, you should have no problem running a 48.
I think 48" would be perfect, matches the track width of the tractor. Just watch the weight of the mower, that would be the biggest factor, but power-wise, you should have no problem running a 48.