15" x 4" ROTARY CUTTER TAIL WHEEL TIRE WITH FABRICATED HUB - FITS 1" AXLE

What It Is

This is a 15-inch diameter, 4-inch wide pneumatic tail wheel tire with a pre-assembled fabricated steel hub, designed for zero-turn mowers and large commercial rotary cutters. It serves as a rear caster or stabilizer wheel, supporting the deck’s weight and improving maneuverability on uneven terrain.

Fitment & Compatibility

• Axle size: Hub fits a 1-inch diameter axle (standard for most commercial zero-turn mowers and tow-behind cutters). Measure your axle shaft diameter before ordering—1-inch is common but not universal.
• Deck size: Typically used on 48–72 inch mower decks. Verify your existing tail wheel’s tire size (15” height x 4” width) matches.
• OEM vs aftermarket: This is a direct replacement for many OEM wheels on brands like Bad Boy, Hustler, Gravely, and Scag, but always cross-reference your mower’s model number with the manufacturer’s parts diagram.
• Hub specs: The fabricated hub uses a standard 4-bolt pattern (check bolt circle diameter if your mower uses a non-standard hub). Measure from center of one bolt hole to center of the opposite hole—common sizes are 4” or 4.5”.

Key Things to Know

• Quality: The fabricated steel hub is more durable than stamped steel hubs, resisting bending under heavy loads (e.g., on rough ground or slopes). The pneumatic tire provides shock absorption vs solid rubber.
• Installation: Moderate difficulty—requires removing the old wheel, cleaning the axle, and securing with a cotter pin or retaining clip (not included). No special tools beyond a socket set and pliers.
• Common gotcha: The tire is sold as a pre-assembled unit (tire + hub). If your mower uses a separate hub and tire, this is a drop-in replacement; if your hub is welded to the mower frame, you’ll need a different part.
• Pressure: Inflate to 20–25 PSI max. Overinflation reduces traction and increases wear; underinflation can cause the tire to slip on the hub.

Should You Buy It

Buy this if you need a heavy-duty, ready-to-install tail wheel for a commercial zero-turn or rotary cutter with a 1-inch axle and standard bolt pattern. It’s a solid upgrade over OEM stamped hubs, especially if you frequently mow rough terrain. Skip it if your axle is smaller than 1” or you need a hubless tire for a custom setup.