I have a BIG beef with most all 'homeowner-grade' ZTRs and that is the abandonment of
pivoting front axles. I've owned three ZTRs, '96 Dixon 4228, '06 CC RZT50, Husky MZ6128. All are still in service, but the CC mows best because the two
driving wheels are always in contact with the ground. Bad news is that the CC is still in my care but not to use. All are B&S power and none has ever had engine service. Yards mowed are 2 ac & 3 ac.
My point is that IF what you mow is checkerboard-flat, any ZTR will earn its keep very quickly. Traction can't be a matter of wheel/tire size unless the right two are on the ground. If I EVER buy another ZTR it will likely be a
Country Clipper model with the pivoting front axle, well if I can get one w/o Kohler power.
btw, my Husky has HG 3200s, and fabbed deck. I chose it over a comparable Dixon with larger R wheels and Kohler power. We buy B&S engines to R&R cheaper that parts for the Kohlers we service. Current MZs have Kawasaki power and I'd be ok with that, tho' it'd be my first.