18x9.50-8 Lawn Mower Turf Tires (Set of 2), 4 Ply Turf S Pattern 18x9.5x8 Tubeless Tires for Lawn & Garden Riding Mower Tractor Golf Cart Utility Vehicles

What It Is

A set of two 18x9.50-8 turf tires with a 4-ply rating and an S-shaped tread pattern, designed for zero-turn mowers, riding tractors, garden tractors, golf carts, and utility vehicles that require low ground pressure and minimal turf damage.

Fitment & Compatibility

• Measure first: The tire size is 18 inches tall, 9.5 inches wide, and fits an 8-inch rim. Verify your existing tire’s sidewall markings match these numbers exactly.
• Rim compatibility: These are tubeless tires—check that your wheels are 8 inches in diameter and have a standard 4/110mm or 4/4-inch bolt pattern (most common on lawn tractors). Measure your bolt circle to be sure.
• Brand/model fit: Works on many John Deere, Cub Cadet, Husqvarna, Craftsman, Troy-Bilt, and Ariens riding mowers, but always cross-reference your model’s OEM tire part number (e.g., AM129420, 532129420) with this tire’s specs. Aftermarket fit is common, but clearance to fenders, spindles, and the mower deck must be checked—especially on tight-frame zero-turns.
• Load capacity: 4-ply rating handles up to ~615 lbs per tire at 20 psi. Confirm your mower’s axle weight doesn’t exceed that.

Key Things to Know

• Tread pattern: The “S” pattern is a directional turf tread—excellent for traction on grass, but not for mud or snow. Avoid if you mow wet or sloped terrain.
• Installation: No special tools needed if mounting on existing rims. Use a tire spoon and soapy water; bead seating may require a high-volume air source. Balance beads are recommended for smooth ride at higher speeds (e.g., golf carts).
• Common gotcha: These tires are 18 inches tall—some older mowers designed for 20-inch tires may have reduced ground clearance or deck lift issues. Measure your current tire height and clearance before buying.
• Tubeless vs tube: Tubeless design is lighter and less prone to pinch flats, but if your rims are rusty or have damaged bead seats, you’ll need tubes (sold separately).

Should You Buy It

Buy these if you need a reliable, budget-friendly set of turf tires for a standard riding mower or garden tractor used on flat, well-maintained lawns. They’re a solid value for the price and rating, but skip them if you require aggressive traction, higher load capacity, or snow/off-road use.