18x9.50-8 Lawn Mower Tires with Rim, 18x9.5x8 Tubeless Tire and Wheel Assemblies Turf Tread for Rear Riding Lawnmower Garden Tractor, 4 Lug 8"x 7"Wheel, 2.83" Central Hole, 4PR, 1036 lbs Capacity

What It Is

This is a complete rear tire and wheel assembly (18x9.50-8) with a 4-lug, 8"x7" wheel, designed for riding lawn mowers and garden tractors. The turf tread pattern minimizes lawn damage, and the 4-ply rating supports up to 1,036 lbs per tire, making it suitable for heavier-duty residential or light commercial mowers.

Fitment & Compatibility

Before buying, verify these four measurements on your current rear wheel:

• Tire size: Must be 18x9.50-8 (diameter x width-rim diameter). If your old tire is a different size (e.g., 18x8.50-8), the width may not clear your mower deck or fenders.
• Bolt pattern: 4-lug on an 8"x7" wheel. Measure center-to-center across opposite lugs – it should be 4" on square patterns or check your owner’s manual for “4 on 4” or “4 on 4.5” (this wheel is 4 on 4).
• Center hole: 2.83" diameter. If your axle hub is larger than this, the wheel won’t seat properly.
• Offset: The wheel is a standard 8"x7" (7” wide). Measure your old wheel’s backspacing (distance from mounting face to inside lip). Most garden tractors use 3.5"–4" backspace; if yours differs, the tire may rub the frame or deck.

Common brands that use this size: John Deere (100/300 series), Husqvarna, Craftsman, Troy-Bilt, and many off-brand garden tractors. Always cross-reference OEM part numbers (e.g., John Deere AM137332 or AM139078) if available.

Key Things to Know

• Tread type: Turf tread is low-aggression – great for lawns, poor on mud or wet slopes. If you need traction in loose soil, look for a lug or bar tread.
• Installation: These come pre-assembled with valve stems and air. You’ll need a lug wrench (usually 9/16" or 5/8") and a jack or block to lift the mower. Torque lugs to 50–70 ft-lbs.
• Load capacity: 1,036 lbs per tire is high – fine for most riders, but check your mower’s total rear axle weight (usually under 800 lbs combined). Overloading can cause premature tread wear or sidewall failure.
• Quality: 4.5 stars from 62 reviews suggests good value. However, some users report slight balance issues at higher speeds (above 5 mph). If you notice vibration, add stick-on wheel weights.

Should You Buy It

If you need a direct-fit, turf-friendly rear tire for a standard 4-lug garden tractor and your existing tires are worn, cracked, or losing air, this assembly is a solid, budget-friendly replacement. Skip it if you need a different bolt pattern, a larger center hole, or aggressive traction for muddy terrain.