18x8.50-8 4 Ply Lawn Trac Tire

What It Is

The 18x8.50-8 4 Ply Lawn Trac Tire is a replacement drive tire for riding mowers, garden tractors, and zero-turn mowers. It’s designed for general lawn traction on flat to moderately sloped turf.

Fitment & Compatibility

• Size: The tire measures 18 inches tall, 8.50 inches wide, and fits an 8-inch rim. Verify your existing tire size is exactly 18x8.50-8; a common alternative is 18x9.50-8, which is wider and may rub on mower frames or fenders.
• Bead & Rim Width: This tire fits rims with a 3–5 inch width. Measure your rim’s bead seat width (inside edge to inside edge) to confirm.
• Brand/Model: Works with most brands (John Deere, Craftsman, Husqvarna, MTD, Cub Cadet) but check your mower’s model number for OEM part cross-references. This is a generic aftermarket tire, not OEM.
• Load Capacity: 4-ply rating offers ~400 lbs per tire. Heavier machines (e.g., with loaded tires or attachments) may need a 6-ply tire.
• Valve Stem: Ensure your current rim uses a standard TR13 or TR15 stem; this tire accepts both.

Key Things to Know

• Installation Difficulty: Moderate. You’ll need tire irons, a bead breaker (or brute force), and an air compressor. Many people pay a shop $10–$20 per tire for mounting.
• Tread Pattern: The “Lawn Trac” tread is a shallow, open-lug design. It provides good grip on grass but minimal traction on mud, snow, or loose soil.
• 4-Ply vs. 6-Ply: 4-ply is lighter and rides softer on turf, but punctures more easily. If you mow rocky or debris-heavy areas, consider a 6-ply tire.
• Common Gotcha: Check your rim for rust or damage before ordering. Old rims often need new valve stems or bead cleaning to seal properly.

Should You Buy It

Buy this tire if you need a budget-friendly, direct replacement for a worn drive tire on a standard lawn tractor or zero-turn mower used on grass only. Skip it if you need heavy-duty puncture resistance, a different tread pattern (e.g., turf saver or all-terrain), or a wider tire for better floatation.