Inner tubes for motorcycles and scooters are essential for the proper functioning of tires with non-tubeless rims. The right choice depends on the type of vehicle, tire size, and use. Here's a practical guide:

🛞 1. When inner tubes are needed

• Non-tubeless tires, i.e. on non-airtight rims (especially older models, enduro, cross, trial motorcycles, 50-125cc scooters).
• Some off-road models also prefer tubeless tires for durability and ease of repair.

📏 2. How to choose the right inner tube

✅ Compatible size

It must match the one indicated on the tyre (e.g. 120/90-18 → tube for 120/90-18 or compatible with 110-120/90-18).

✅ Valve

• TR4 : straight valve with thread, typical for motorcycles.
• TR87 : 90° bent valve, often for scooters or small wheels.
• TR6 / TR13 : Less common but present in some configurations.

✅ Thickness

• Standard : ~1.5 mm – normal road use.
• Heavy Duty : ~2-3 mm – increased puncture resistance, ideal for enduro or touring.
• Ultra Heavy Duty : up to 4 mm – extreme racing/off-road use (e.g. Michelin UHD, Metzeler Mousse if you want to go overboard).

🧠 3. Helpful tips

1. It's always best to change the inner tube when you change the tire.
2. Avoid creases and pinches during assembly.
3. Check compatibility with the rim and valve hole.
4. Always carry a spare camera if you go off-road or on long trips.