Cenipar 4.80/4.00-8 Inner Tubes, Pack of 4 — Heavy-Duty IIR Rubber, TR-13 Valve, 30 PSI

Cenipar 4.80/4.00-8" inner tubes are heavy-duty replacement tubes with TR-13 straight valves designed to restore air-holding performance to 4.80/4.00-8" tires used on carts, mowers and hand trucks.

These replacement tubes come as a set of four and fit 8" rims (about 15.5" outside diameter). Molded from isobutylene isoprene rubber (IIR), they are built to resist aging and improve airtightness compared with standard compounds. The TR-13 straight valve and reinforced valve seat help reduce leaks and cracking, while a 30 psi maximum rating keeps inflation within safe limits for typical garden and utility equipment.

How do these inner tubes extend the life of my wheels?

Replacing a failed inner tube is a quick way to bring an old wheel back into service without buying a new tire or rim. The thicker rubber and improved material resist punctures and repeated impacts, reducing the frequency of replacements.

• Made from isobutylene isoprene rubber for better air retention and aging resistance.
• Four times thicker than some competing tubes for increased puncture resistance.
• Reinforced valve seat to prevent tearing and leaking around the stem.

What equipment is compatible with the 4.80/4.00-8" size?

These tubes are sized to work with common 4.80/4.00-8" tires and 8" rims, making them suitable for a wide range of small utility and lawn machines. They are popular replacements for seasonal and everyday gear that use the same diameter tires.

• Hand trucks, garden carts and wheelbarrows.
• Lawnmowers, yard tractors and small utility wagons.
• Snow blowers, generators, pressure washers, and some ATVs or chippers where this size applies.

How easy is installation and what should I watch for?

Installation is straightforward and typically takes about ten minutes with basic tools; no special equipment is required. Inflate to a maximum of 30 psi and avoid overfilling to prevent ruptures; check the valve seating and bead alignment during assembly.

• Quick swap—remove old tube and insert new tube into existing tire and rim.
• Use soap solution to check for leaks around the TR-13 valve after inflation.
• Do not exceed 30 psi; ensure tire bead sits evenly on the rim.

What makes Cenipar's tube design different from economy options?

Cenipar emphasizes durability and airtightness through material choice and valve reinforcement. The combination of IIR compound and a strengthened valve seat reduces common failure modes such as slow leaks and blowouts in rough yard or jobsite conditions.

• Isobutylene isoprene rubber enhances aging resistance compared to basic rubbers.
• Thicker wall construction to absorb impacts and reduce punctures.
• TR-13 straight valve for reliable inflation and ease of access.

Who is this for: The Cenipar 4.80/4.00-8" inner tube pack is aimed at homeowners, landscapers and light-commercial users who maintain carts, mowers, hand trucks and similar small-wheel equipment. If you need a cost-effective way to return a tire and wheel to service—without replacing whole rims or tires—this pack of four durable tubes offers a practical, longer-lasting solution.