Early this spring I replaced the tires on my x-758 after 76 hours on the mower . I bought a set of Ag Bar tires this spring . Now after mowing my yard two times and the tires work very well .
The tires that come on the X-758 4X4 are the HDAP and hard on my grass . I went with the R1 because it is a four wheel drive and I do use the tractor to pull heavy things . The R1 bar tires are a bunch easer on my grass and still work well when needing more traction .