Marathon 4.10/3.50-4" Flat Free, All Purpose Utility Tire on Wheel, 4" Centered Hub, 3/4" Bearings

Features:

4.10/3.50-4" (10.5" diameter) with a 4" centered hub and 3/4" ball bearings.
This tire and wheel assembly is commonly used on lawn mowers, air compressors, hand trucks (dollies), generators, pressure washers and other utility equipment. Also compatible with rigid or swivel casters.
Comes pre-mounted on a solid steel, silver wheel for quick and easy installation.
Has the same feel and handling of an air-filled tire, but guaranteed to never go flat.
Features a load capacity of 250 pounds and a sawtooth tread for the perfect balance of traction and maneuverability.

replacement for the zero-turns and walk-behinds.

If you have a mower with the air tires on it do yourself a favor and get these. I have changed them out on every machine I have that has this size. The zero-turns and the walk-behinds. I have not had a single failure. I really cant imagine what the people that are saying the tire comes off the rim are doing to get the tire off the rim. I have hit a 4" tall concrete edge with these things on a zero-turn and it didn't do anything to the tire or rim but knock the grass off.

Jazmine Solis

Great product! I made the mistake of not following ...

Great product! I made the mistake of not following the directions for accurately measuring the item to be replaced and ordered the wrong axle size; measure the width of the axle from hub to hub. My mistake; item returned for refund, no problem. Unfortunately, the size I need is not listed at Amazon, so I went directly to the vendor and ordered from there. Wherever possible I have replaced pneumatic tires with solid tires; too much of a hassle to fix flats and in the long run much cheaper.