CALU LUKY 18x8.50-8 / 18x9.50-8 Butyl Inner Tube 2-Pack with TR-13 Valve Stem — 8" Rim Fit, Improved Air Retention

When a flat tire sidelines yard work or a round of golf, having the correct size inner tube on hand restores mobility fast. CALU LUKY offers two 18x8.5/9.5-8 inner tubes constructed from butyl rubber for improved air retention and wear resistance versus natural rubber. Each tube includes a straight TR-13 valve stem sized for 8" rims and is compatible with a broad range of garden, utility and light-vehicle applications.

Will these inner tubes fit my golf cart or lawn mower?

These tubes are sized for tires marked 18x8.50-8 or 18x9.50-8 and designed for rims that are 8 inches in diameter with widths between 8.5" and 9.5". Confirm your tire sidewall markings and rim dimensions before ordering to ensure compatibility.

• Fits tire sizes: 18x8.50-8 and 18x9.50-8
• Rim diameter: 8 inches; rim width: 8.5"–9.5"
• Common applications include golf carts, lawn tractors, tillers and trailers

How durable are these butyl inner tubes for frequent use?

Made from premium butyl rubber, the CALU LUKY inner tubes resist air loss and aging better than many natural rubber alternatives. They offer elastic damping for a smoother ride and hold up well under regular yard, farm, and utility tasks.

• Butyl construction improves airtightness and longevity
• Resistant to cracking and accelerated degradation from weather
• Suitable for home, commercial and light industrial use

How easy is installation — can I replace a tube myself?

Installing these inner tubes is straightforward for anyone with basic tire tools. Most users can remove the tire, swap the tube, and re-seat the tire in under 10 minutes depending on experience and equipment.

• Includes TR-13 straight valve stem compatible with standard air pumps
• Quick replacement process: deflate, unseat bead, swap tube, inflate
• No special adhesives or curing required — ready to inflate

Which machines and tools are these inner tubes suitable for?

The 18x8.5/9.5-8 tube serves a wide range of small-wheeled equipment used in gardening, landscaping, and light transport. Its size and valve type make it a common replacement part for many household and commercial machines.

• Golf carts, John Deere-style lawn tractors and mowers
• Wheelbarrows, hand trucks, trolleys, and small trailers
• Snow throwers, tillers, generators, compressors and similar units

Who is this for? If you maintain lawn and garden equipment, run a small landscaping business, or keep a trailer, generator, or golf cart in service, this two-pack of CALU LUKY inner tubes is a practical spare or repair set. Homeowners who prefer to do basic maintenance themselves will appreciate the durable butyl construction and easy installation, while small shops and rental fleets will value the reliability and broad compatibility for 8" rim applications.