16x6.50-8 16x7.50-8 Inner Tube Straight Valve Ride On Lawn Mower & Garden Tractor TR13

What It Is

This is a 16x6.50-8 or 16x7.50-8 inner tube with a straight valve stem (TR13) designed for ride-on lawn mowers and garden tractors. It replaces a worn or punctured tube inside the tire to hold air and keep the machine rolling.

Fitment & Compatibility

• Tire size: Fits tires marked 16x6.50-8 or 16x7.50-8. Both sizes share the same 8-inch rim diameter and similar width range, so this tube works for either.
• Rim diameter: Must be 8 inches. Check the sidewall of your tire for the size stamp (e.g., “16x6.50-8”).
• Valve stem: Straight TR13 (standard small engine valve). Ensure your rim hole is sized for a straight stem—not a 90-degree bend or TR15 (larger bore). Measure the stem hole on your rim; TR13 fits a ~0.625” hole.
• Brand/model: Universal fit for most lawn tractors (John Deere, Cub Cadet, Husqvarna, Craftsman, etc.) using those tire sizes. No OEM-specific part needed.
• What to check: Remove the tire and measure the old tube’s valve stem type and overall diameter. Confirm the new tube matches your tire’s inner width (6.50 or 7.50) – this tube handles both because it’s slightly oversized.

Key Things to Know

• Quality: Butyl rubber, holds air well. Rated 4.5/5 – most users report no leaks after installation.
• Installation difficulty: Moderate. You’ll need tire irons to break the bead and remove the tire from the rim. Lubricate the tube and rim edge with soapy water to avoid pinching.
• Common gotcha: The tube can twist inside the tire during mounting, causing a pinch flat. Inflate slightly after installation, then deflate and re-inflate to seat it evenly.
• Valve stem note: The straight stem may not fit rims with deep offset or recessed valve holes. If your old tube had a 90-degree stem, this one won’t work without modifying the rim.

Should You Buy It

Buy this if you need a reliable, budget-friendly replacement tube for a 16x6.50-8 or 16x7.50-8 tire on a riding mower or garden tractor, and your rim has a standard straight valve hole. It’s a solid value for DIY repairs, but skip it if you need a 90-degree stem or have a larger commercial tire.