Mission Automotive 4.80/4.00-8 in Tire Inner Tubes for Wheelbarrow Wheels - Fits Trailer Tire Tube - Pack of 2

What It Is

This pack of two Mission Automotive 4.80/4.00-8 inner tubes is designed for pneumatic wheelbarrow wheels, but also fits many lawn tractors, garden carts, and small trailers that use a 4.80/4.00-8 tire size.

Fitment & Compatibility

Before buying, confirm your tire sidewall says 4.80/4.00-8 (or just 4.00-8 or 4.80-8). This tube fits tires with a 4.00-8 or 4.80-8 size designation, which is common on wheelbarrows, some walk-behind mowers, and small utility trailers. It will not fit 3.50-8, 5.00-8, or 4.10/3.50-4 tires. The tube has a standard TR13 (straight) valve stem—check that your wheel rim has a hole for a straight stem (not angled or large-diameter). Measure your existing tube’s valve stem length if you need a specific reach through the rim. This is an aftermarket part, not OEM-specific to any brand.

Key Things to Know

• Installation requires removing the tire from the rim – you’ll need tire irons or a pry bar and some patience. Lightly dust the tube with talc or baby powder before inserting to prevent pinching.
• Check for rim rust/damage – sharp edges or rust on the rim can puncture the new tube quickly. Sand or file any rough spots.
• Over-inflating is a common mistake – these tubes are rated for about 30-40 PSI max, but wheelbarrows and mower tires often run at 20-30 PSI. Check your tire sidewall for the recommended pressure.
• Valve stem alignment – install the tube with the valve stem at the same position as the old one (usually at the rim’s valve hole). Rotate the tire on the rim slightly before fully seating to ensure the stem isn’t twisted.

Should You Buy It

If you have a 4.80/4.00-8 or 4.00-8 tire on a wheelbarrow, lawn cart, small trailer, or mower and your current tube is leaking or cracked, this two-pack offers solid value at a low price. It’s not for odd-sized tires or heavy-duty commercial use, but for typical homeowner jobs, it’s a reliable, budget-friendly choice.