20x8.00-8 Lawn Tractor Tire, 20" Heavy-Duty Tire & Wheel Assembly with 3.5" Offset Hub (Keyway) and 3/4" Bushing, Black Replacement for Large Garden Tractors and Commercial Mowers

What It Is

This is a heavy-duty 20x8.00-8 tire and wheel assembly designed for large garden tractors and commercial mowers. It replaces worn or damaged rear drive tires, providing traction and support for machines with a 3/4" axle and a keyway hub.

Fitment & Compatibility

Before buying, confirm these three things:

• Tire size: Must match your existing tire (20" diameter, 8" wide, 8" rim). Measure your current tire’s sidewall markings.
• Axle size: The hub fits a 3/4" diameter axle with a keyway. If your axle is 1" or uses a different keyway size, this won’t work.
• Offset: The 3.5" offset hub positions the tire outward. Measure from your mounting surface to the inside of the wheel well to ensure clearance. Common on larger John Deere, Cub Cadet, Husqvarna, and Simplicity models, but always check your deck and frame for interference.

Key Things to Know

• Bushing included: Comes with a 3/4" bushing, but you may need to ream or shim it for a snug fit on your specific axle.
• Installation difficulty: Moderate – requires jacking the mower, removing the old tire, and tightening the axle nut to manufacturer torque (typically 50-80 ft-lbs).
• Common gotcha: The keyway slot must align with your axle’s key. If your axle uses a roll pin or no key, you’ll need a different hub or adapter.
• Load rating: Heavy-duty design supports up to 1,000 lbs per tire, suitable for rough terrain or mowers with attachments.

Should You Buy It

Buy this if you have a large garden tractor or commercial mower with a 3/4" keyed axle and need a durable, all-purpose replacement tire at a budget-friendly price. Skip it if your axle is non-standard, your mower requires a different offset, or you need a turf-safe tread for delicate lawns.