Ever feel lost when looking at technical drawings or material lists? Specific measurements like “18X6 50X8 Tubes” can sound like a secret code! These tubes are vital parts in many projects, from building sturdy frames to setting up complex machinery. But picking the wrong one can cause big headaches—think leaks, weak structures, or wasted money.
Choosing the correct tube size and specification is crucial for safety and success. If you mix up the dimensions or material grade, your project might fail when you need it most. We know it’s confusing to compare different types and figure out what “50X8” actually means for your needs.
This guide cuts through the jargon. We will clearly explain what 18X6 50X8 Tubes are, where they fit best, and how to ensure you purchase the perfect match every single time. Get ready to become an expert on these essential components!
Top 18X6 50X8 Tubes Recommendations
- Quantity: 2
- Replaces: 7146
- Size: 18X6.50X8, 18X7.50X8. Tire Size: 18X650X8
- Valve Stem: Straight TR13 Heavy Duty
- Heavy-Duty Construction: Made from high-quality, thick rubber, these inner tubes are built to handle tough conditions. The shock-absorbing material enhances durability while delivering a smooth and stable ride for outdoor tasks.
- Quick Inflation with TR-13 Valve: Featuring a TR-13 straight valve stem, these lawn mower inner tubes allow fast, easy inflation and simple pressure adjustments, helping keep your equipment operating at its best.
- Convenient 2-Pack Set: Each set includes two inner tubes, perfect for replacing both tires at once or keeping an extra as a backup. A practical and cost-effective choice for routine maintenance.
- Reinforced for Leak Resistance: Designed with strengthened rubber to help reduce punctures and air leaks, these heavy-duty tubes deliver dependable performance in demanding environments.
- Versatile Equipment Use: Suitable for a wide range of vehicles, including wheelbarrows, lawn mowers, hand trucks, garden carts, go-karts, ATVs, trailers, and more.
- 【Wide Compatibility】18x6.50-8 inner tubes fit 8inch rim ATV Quad 4 Wheeler Go Kart Baja Warrior Mini Bike Lawn Tractor Snow Blower Golf Cart Garden Trailer Heavy Duty Lawn Mower, also fit 18x7.50-8, 18x8.50-8, 18x9.50-8, 19x7.00-8, 20x8.00-8, 20x10.00-8
- 【Heavy-Duty, Leak-Resistant】18x7.50-8 inner tubes use premium butyl rubber, composition plus thickened sidewalls makes them puncture and explosion-resistant
- 【Durable & Leak-Resistant Valves】Rubber coated TR13 straight valve stem with enhanced seat seal prevents sand and dust from entering the inner tube and the tire. The tough rubber stem seat is also tear resistant to extend the service life of the valve
- 【Longer Service Life】20x8.00-8 Butyl rubber inner tubes are more impact and heat-resistan compared to ordinary rubber, meaning they can offer more than double the service life of ordinary rubber inner tubes.
- 【Package Includes】2 x 20x10.00-8 inner tubes with TR13 straight valves + 2 x Red Stem Valve Caps + 2 x Black Stem Valve Caps + 1 x Valve Core Wrench + 5 x Brass Valve Stem Cores
- Universal Fit for Various Tire Sizes: Our 18x8.50/9.50-8 inner tubes are designed to fit a wide range of tire sizes including 18x6.50-8, 18x7.50-8, 18x8.50-8, 18x9.50-8, 20x8-8 and 20x10x8 tires, making them perfect for lawn mowers, tractors, golf carts, garden trailers, and more. Compatible with vehicles that have an 8-inch rim diameter and tire widths from 8.5 to 9.5 inches.
- Simple lnflation with TR-13 Valve Stem: Each 18x8.50/9.50-8 lawn mower tire tube features a TR13 straight valve stem for straightforward inflation. These valve stems are easy to use, ensuring that you can quickly and efficiently pump air to the recommended pressure, maintaining your tire’s performance without hassle.
- Package Includes: 1* 18x8.50/9.50-8 inner tube. Please check the size carefully before purchasing.
- Heavy Duty and Long-Lasting Rubber Construction: Crafted from durable and high-quality butyl rubber, our inner tubes offer excellent air retention and are built to withstand wear and tear. These lawn mower tire tubes' tough material ensures resistance to punctures and leaks, providing long-lasting performance for your outdoor equipment.
- Wide Applications: Our 18x8.50/9.50-8 inner tubes are a versatile solution for a variety of vehicles. Whether you need replacement tubes for your lawn mower, ATV, golf cart, or garden equipment, our inner tires offer reliable performance, ensuring your machinery runs smoothly through all seasons.
- Pefect Fit: Replacement Tire Inner tubes for 18x8.50-8" and 18x9.50-8" Tires. This replacement inner tubes universal fit for 18x8.50/9.50-8" tires/wheels (15"-15.5" outside diameter, 8" width). Also called as 18x6.50-8, 18x7.50, 18x8.5-8, 18x9.5-8, etc
- Heavy Duty Inner Tube: Made from premium-quality, heavy-duty rubber and so are better in air tightness and aging resistance. These inner tubes are durable and ideal for home, professional and commercial or industrial use
- Great Compatibility: Fits with 8" rim. This inner tube is compatible with various equipement such as ATVs, quad 4 wheelers, Go Karts, lawn mowers and tractors, hand trucks, wheelbarrows, garden / utility flat carts, golf cart, yard trailers, wagons, generators, snow blowers, perssure washers, tillers, air compressors, wood chippers, dollies, trolleys and more
- Saving Cost: NO NEED TO BUY A NEW WHOLE TIRE. When the old 18x8.5-8 inch or 18x9.5-8 in tire have a flat, just simply replace the 18x8.5/9.5-8" tube and continue to use it normally! They are easy to install. Take probably a few mins to install the tire tubes
- Please Note: Package includes 2pcs inner tube, tube size 18x8.5/9.5-8", standard TR13 straight valve stem. NOT for road/highway use. 30 PSI maximum inflation. Only inflate with manual pump to avoid overfilling
- This product is a perfect fit for your 18x6.50-8, 18x7.50-8 Tire / Wheel: Also a replacement tube for 18x6.50-8, 18x7.50-8, 18x8.50-8, 18x9.50-8, 20x8.00-8, 20x8.50-8, 20x9.00-8 and 20x10.00-8
- Heavy Duty Material Built to Last Longer: This Inner Tube is made from High Quality Butyl Rubber. These inner tubes are highly durable and ideal for home, professional and commercial / industrial use in tire application
- Compatible with: It works with lawn mowers / tractors, hand trucks, wheelbarrows, garden / utility / flat carts, yard trailers, dollies, trolleys, wagons, generators, snow blowers, pressure washers, air compressors, wood chippers and more
- Tube / Valve Type: ATV, Lawn & Garden, Go Kart Replacement Tire Applications with a Valve Type: TR13 for Rim Size: 8 Inch
- Get this aftermarket tube with the best price and quality in the market. If you get a flat tire just replace the tube and you'll be back up and running
- 【Premium Butyl Rubber Construction】Crafted from high-quality butyl rubber, these inner tubes offer superior air retention, puncture resistance, and heat durability. Compared to natural rubber, they provide better shock absorption, flexibility, and long-term performance in all weather conditions.
- 【High Air Tightness & TR13 Straight Valve】Equipped with TR13 straight valve stems for easy inflation and a tight, leak-proof seal. The high rubber content ensures excellent air retention and minimizes the need for frequent reinflation.
- 【Quick & Easy Installation】No special tools required—simply deflate the tire, insert the tube, inflate, and you’re good to go in minutes. Whether you’re a DIYer or professional, replacing a flat or damaged tube has never been easier.
- 【Safe & Versatile Use】Engineered with an explosion-proof self-sealing design, when and if punctured, it immediately creates an airtight seal to prevent damage, destruction and injury. The replacement tire tubes are ideal for carts, trolleys, pressure washers, and more—providing smooth and stable operation even on rough terrain.
- 【Universal Fit】Designed to fit tire sizes 18x6.50-8 |18x7.50-8 | 18x8.50-8 | 18x9.50-8 | 20x8.00-8 | 20x10.00-8 | compatible with a 8" rim, these inner tubes are compatible with a wide range of equipment including lawn mowers, garden tractors, go karts, ATVs, snow blowers, and utility carts.
- 18x8.5/9.5 -8 Replacement Inner Tubes: Fit vehicles with 8” rims that are between 8.5'' to 9.5'' wide such as Golf Cart, Tractor, John Deere Lawn Mower, Snowthrowers, Tillers, Trailers, Wheelbarrows and ATV's – guaranteed to fit!
- ADDS COMFORT TO YOUR RIDE: With thick butyl rubber that absorbs shocks, (60 psi Maxim) you won’t feel the bumps and hollows because your vehicles will glide along, protecting you from the force. Now that’s comfortable.
- SAFETY FIRST IS OUR MOTTO: Heavy-duty inner tube and tire. When and if punctured, it immediately creates an airtight seal to prevent damage, destruction and injury to the rider. Safe in any season or weather condition.
- EASY INSTALLATION: In less than 5 minutes, you’ll be back on the trail or track! Replace the inner tube quick – so simple, easy and fast!
- MADE HEAVY DUTY FROM QUALITY MATERIALS: It’s our job to make dependable and durable inner tubes and we do it right! Count on AR-PRO!
The Ultimate Buying Guide for 18X6 50X8 Tubes
When you shop for 18X6 50X8 tubes, you need to know what makes a good one. These tubes are used in many different projects. This guide helps you pick the best tubes for your needs. Think of the numbers like this: 18X6 might be the size, and 50X8 could be the thickness or a specific rating.
Key Features to Look For
Dimensions and Tolerances
Always check the size first. The “18X6” part tells you the size. Make sure these measurements match what your project needs. Good tubes have tight tolerances. This means the actual size is very close to the size listed. Loose tolerances mean the tube might not fit right.
Pressure Rating
If you plan to push fluid or air through the tube, the pressure rating is vital. Look for a number followed by “PSI” or “Bar.” A higher number means the tube handles more pressure safely. Never guess on this point; choose a rating higher than your expected maximum pressure.
End Finish
How the ends of the tube are finished matters for connecting them. Some tubes have smooth, beveled ends for welding. Others might have plain, cut ends. Check if the end finish matches your required connection method.
Important Materials Matter
The material defines how strong and long-lasting your 18X6 50X8 tubes will be. Different materials suit different jobs.
- Steel Alloys: These are very strong. They resist bending and high heat well. They are common for heavy-duty industrial uses.
- Stainless Steel: This material resists rust and corrosion. If your tube will touch water or chemicals, choose stainless steel. It lasts longer in wet environments.
- Aluminum: Aluminum is lightweight. It works great when you need strength but not a lot of weight. It also resists corrosion well.
- Plastics (PVC/CPVC): These are often cheaper and resist many chemicals. They are not as strong as metal tubes, so they suit low-pressure applications like plumbing.
Factors That Improve or Reduce Quality
The quality of your tube directly affects how long it works and how safe it is.
What Makes Quality Better?
Smooth internal surfaces improve flow. If the inside is rough, it slows down liquids or air. High-quality manufacturing processes create tubes with fewer defects, like small cracks or pits. Always look for tubes that come with a certification document. This paper proves the material and testing standards were met.
What Reduces Quality?
Thin walls reduce strength significantly. If the material is mixed poorly during creation, the tube can become weak in spots. Scratches or dents on the surface often mean the tube has suffered damage. Avoid tubes with visible rust or corrosion, even if they seem cheap.
User Experience and Use Cases
How people use these tubes shows you what they are best for.
Simple Installation
Easy-to-handle tubes improve the user experience. Lightweight tubes are easier to move and install. Tubes that connect easily with standard fittings save time during setup.
Common Uses
- Hydraulic Systems: Strong steel tubes handle the intense force of hydraulic fluid.
- HVAC Systems: Aluminum or specific steel tubes move refrigerants efficiently.
- Structural Supports: Thick-walled metal tubes provide support in framework construction.
- Fluid Transfer: PVC or stainless steel tubes move water or mild chemicals in labs or factories.
10 Frequently Asked Questions (FAQ) About 18X6 50X8 Tubes
Q: What do the numbers 18X6 50X8 usually mean?
A: The numbers describe the tube’s dimensions, like its outer diameter (OD), wall thickness, or a specific material grade code. You must check the supplier’s chart for the exact meaning.
Q: Can I cut these tubes easily at home?
A: Metal tubes require special saws or cutters. Plastic tubes are easier to cut. Always wear safety glasses when cutting any tube.
Q: Are these tubes safe for drinking water?
A: Only if the material is rated as “food-grade” or “potable water safe.” Standard industrial tubes are often not safe for drinking water.
Q: How do I prevent rust on steel tubes?
A: Use a protective coating like paint or specialized sealant. Stainless steel naturally resists rust better than regular steel.
Q: Should I buy seamless or welded tubes?
A: Seamless tubes have better strength because they lack a seam weld. Welded tubes are often cheaper but might fail at the weld under very high pressure.
Q: What is the difference between OD and ID?
A: OD means Outer Diameter (the outside edge). ID means Inner Diameter (the hole in the middle). The size listed (like 18X6) usually relates to one of these.
Q: How much weight can a 18X6 50X8 steel tube support?
A: The weight capacity depends heavily on the specific steel alloy and wall thickness. Always consult a load chart provided by the manufacturer.
Q: Are these tubes magnetic?
A: If they are made of standard carbon steel, yes, they are magnetic. Most stainless steel grades are not magnetic, or only slightly magnetic.
Q: Can I bend these tubes without breaking them?
A: You can bend them, but you usually need a special tube bender tool. Bending without the right tool often causes the tube to kink or flatten.
Q: Where is the best place to store these tubes before use?
A: Store them indoors, away from damp floors or direct sunlight. Keep them organized so they do not get scratched or dented during storage.