2 pcs 4.80/4.00-8 inner tubes Made of high-quality and robust rubber, these inner tubes are very durable and ideal for household, professional and commercial, industrial use. Compatible models for tire reference 4.80/4.00-8. 15.5 tire diameter for 15.5 pneumatic tires/wheels - Perfect for hand trucks, dollies, lawn mowers, wheelbarrows, generators, transport carts with 16 wheels. Mounts on an 8 rim. /WHEEL: Replacement inner tubes for 4.80/4.00-8 tires/wheels (15.5 outer diameter). Also measured in 4.80 4.00-8, 4.8 4.0-8, 480/400-8, 4.80-8, 4.8-4 -8, 480400-8, 4.8/4.0-8, 4.00/4.80, 4.80-4.00-8 inches Note: MAX INFLATION 30 PSI. Inflate only with a hand pump to avoid over-inflation. Not intended for road or highway use. Universal causes of tire and tube failure: A single puncture or a small hole usually comes from a thorn, wire, or small nail. These may be repairable.

Also check the tire for thorns etc., then remove -THE. Double cracks are usually the result of the rim being pinched. The tube was pinched between the rim and an object on the road/trail. Increase air pressure or use wider tires. Rashes causing a large broken hole.

These are usually not repairable. Also check tires and rims for damage. A cut or tear for an extended period can also indicate a tire blowout. It is generally not repairable. Be careful when entering a tire during installation.

Inspect before installation Inspect the outside of the tread for nails, glass, thorns, or other protruding objects. Visually inspect the inside of the tire casing for nails, glass, or debris. Wipe the inside of the casing with a cloth, then gently feel the inside with your fingers. Be careful when using a tire iron.

The tire iron is very easy to puncture the tube. Inspect both sides of the tire for the bead seat and for any signs of the tube coming out. Reinstall if necessary.

How to inspect the hole on the tube? Inspect for air leaks by holding the tube close to the sensitive skin of your lips or near your ear. Move the tube around its circumference. If these steps do not work, push the tube into the water and look for bubbles in the hole.< /p>