20x8.00-8 Tubeless Lawn Tractor Tires, 3/16" Keyway, with Keyed Hub for Riding Lawn Mower & Garden Tractor Replacement, 950 lbs Capacity, 4 Ply, 2 Pack

What It Is

This is a 2-pack of 20x8.00-8 tubeless rear tires with a keyed hub (3/16" keyway) designed for riding lawn mowers and garden tractors. They handle up to 950 lbs per pair (4-ply rating), making them suitable for heavy-duty mowing, towing carts, or uneven terrain.

Fitment & Compatibility

Before purchasing, verify:

• Tire size: Must match 20x8.00-8 (20" diameter, 8" width, 8" rim). Measure your current tire’s sidewall or rim diameter.
• Hub keyway: The hub has a 3/16" keyway – confirm your axle uses this key size (common on many Craftsman, Husqvarna, John Deere, and MTD models). If your axle uses a 1/4" keyway, these won’t fit.
• Bolt pattern: Hub bolt holes are typically 4 on 4" or 4 on 5.5" (measure center-to-center of opposite bolts). Check your tractor’s wheel stud spacing.
• OEM vs aftermarket: Not a direct OEM replacement for most brands – confirm hub offset and backspacing (measure from mounting face to rim edge) to avoid rubbing against the frame or deck.
• Deck clearance: Ensure the tire’s 8" width doesn’t interfere with your mower deck when turning.

Key Things to Know

• Quality: 4-ply rating is durable for residential use but not for commercial zero-turn mowers (which often need 6-ply). Should handle normal yard debris without flats.
• Installation: Straightforward if you have a socket set and a keyway tool (or a small file to clean axle key slot). No tire machine needed – these are pre-mounted on the rim.
• Common gotcha: The keyway slot may be slightly tight on some axles – lightly file the key or slot for a smooth fit. Also, check that the valve stem is positioned away from the brake assembly.
• Load capacity: 950 lbs total (475 per tire) is fine for most garden tractors (typically 500-700 lbs total weight with operator). Overloading can cause sidewall bulging.

Should You Buy It

Buy these if you need a budget-friendly, heavy-duty replacement for a riding mower or garden tractor with a 3/16" keyway axle, and you don’t mind a universal fit that may require minor adjustments. Skip if you need a direct OEM match or have a zero-turn mower requiring higher ply ratings.