If you need 20" Mower tires.

[Diggin It]

These are killer rubbers

Amazon.com

Usually around $55 each. Sort of an R14 for mowers, combination Turf and Ag tread. Eliminated my need for chains entirely for anything I do on slopes and wet grass and soft turf. Put 'em on both lawn riders a year ago.

I can still slip and spin a bit if it gets TOO soft, but that's much less common with these than turfs, or turfs with chains.

 

[ssgp2]

Had those on an old Honda 4 wheeler years ago. Loved 'em, but man they could tear up some turf when ya hit the gas.