We ordered the 2320 with the extras yesterday. My wife was fighting me a little on R4s, she thought they would rip up the yard, so after a 2 hour rain fall I took her to the dealer so she could demo turf tires and R4s with the R4s actually being on the 2520 so a little heavier tractor. Neither tire did any damage to the wet ground which is a lot of clay around here so we are going with the R4s which appear to be better for loader work and snow moving. She had a big grin after driving both as they were so easy to manuver compared to our bigger garden tractor with no power steering.