20x10-8 Butyl Rubber Inner Tubes, with TR13 Straight Valve Stem (2 Pack), for Tire Size 20x8.00-8 20x10-8, 21x10-8 19x7-8 for Cart, Trunk, Tractor, Garden Carts, Golf Cart

What It Is

This 2-pack of 20x10-8 butyl rubber inner tubes with TR13 straight valve stems is designed to replace or repair tires on lawn tractors, garden carts, golf carts, utility trailers, and other small-wheeled equipment that uses tubed tires. The butyl rubber construction provides superior air retention and puncture resistance compared to standard rubber tubes.

Fitment & Compatibility

Before buying, confirm your tire size is one of these compatible options: 20x8.00-8, 20x10-8, 21x10-8, or 19x7-8. This tube fits tire widths from 7 to 10 inches on an 8-inch rim. Check your current tube’s valve stem type—this tube uses a TR13 straight stem, which fits most standard 8-inch rims but may not work with angled or offset valve holes. Measure your tire’s actual width and diameter (not the rim size) to ensure the tube will expand properly without bunching or stretching too thin. This is an aftermarket part, not OEM-specific, so it works across brands like Cub Cadet, John Deere, Toro, and generic garden carts as long as the tire dimensions match.

Key Things to Buy

• Butyl rubber holds air better than standard rubber—less frequent topping off, especially in hot weather or rough terrain.
• Installation is moderate: you’ll need tire spoons or pry bars, and a bead breaker for stubborn tires. Overstretching the tube can cause valve stem tearing.
• Check valve stem orientation before seating the tire—a crooked stem will leak or be impossible to inflate.
• Use tire talc or soapy water during installation to prevent the tube from pinching between the tire bead and rim.

Should You Buy It

If you need a reliable, budget-friendly 2-pack of 20x10-8 tubes for lawn tractors, garden carts, or small trailers, this is a solid choice. The butyl rubber is a step up from cheap tubes, and the TR13 stem fits most standard rims. It’s not for heavy-duty commercial use or unusual tire sizes, but for typical homeowner or light-duty farm applications, it’s a practical buy.