2-Pack 20x8.00-8 Inner Tubes with Straight Valve Stem for Lawn Mowers and Golf Carts

What It Is

This is a 2-pack of 20x8.00-8 inner tubes with straight valve stems, designed to replace worn or punctured tubes in lawn mower tires and golf cart wheels. They’re a direct fit for many riding mowers, zero-turn mowers, and turf vehicles using that tire size.

Fitment & Compatibility

Before buying, confirm your tire sidewall reads 20x8.00-8 (diameter x width x rim size). These tubes fit tires with a 20-inch outer diameter and 8-inch rim, but check your rim’s width rating—they’re ideal for 8-inch wide rims but may work on slightly narrower or wider ones (e.g., 7–9 inches). Not specific to any brand; they’re aftermarket, so OEM compatibility is fine as long as the tire size matches. Also verify your valve stem type: these have a straight stem (not 90-degree bent), common on most mowers but not all. Measure your old tube’s stem length if clearance is tight.

Key Things to Know

• Installation: Moderate difficulty—requires removing the wheel, breaking the bead, and replacing the tube. A tire spoon or pry bar helps. Watch for pinching the new tube between the rim and tire.
• Quality: At $24.88 for two, these are budget-friendly but have mixed reviews (4.0 stars from only 5 ratings). Some users report thin rubber; inspect for mold lines or defects before mounting.
• Valve stem: Straight stem is standard but may not fit deep-dish rims or wheels with offset hubs. Check if your old stem was straight or angled.
• Tube size: 20x8.00-8 tubes also fit 20x8.50-8 or 20x7.00-8 tires (within 0.5-inch width variance), but avoid oversized tires (e.g., 20x10-8) as the tube will stretch thin and fail.

Should You Buy It

Buy this if you need a quick, affordable replacement for a standard 20x8.00-8 tube on a lawn tractor or golf cart and don’t mind basic DIY installation. Skip it if you want heavy-duty rubber, a bent valve stem, or have oversized tires—look for a thicker, brand-name tube instead.