Bike Inner Tube Twin-Pack 700x18-25 Presta Valve 48 mm designed for a standard flat road bike 700 mm diameter wheel fitted with an 18-25 mm wide tire.
An entry level inner tube with a Presta valve.
Tire and flat wheel with a 700 mm diameter and 18-25 mm wide with Presta valve.
48 mm Presta valve that holds the pressure in.
How to choose your inner tube
Check all the information indicated on the sidewall of the tire (diameter and width). For example, 700x23 means that the tire has a diameter of 700 mm and is 23 mm wide. On the sidewall of the tire you will also find the dimensions in mm expressed in ETRTO international units.
For example: 23-622 means a tire that is 23 mm wide and with a 700 mm inner diameter (700x23).
Removing an inner tube
Remove the used inner tube using B'Twin tire levers (item code 8047839).
What to check before installing your new inner tube
Check the condition of your tire and replace it if necessary.
Make sure no objects are lodged in the tire.
Check the condition of your tire rim strip. A rim strip that is even slightly bent can cause punctures.
Check that your rim does not have any other issues that could damage your inner tube.
Fitting your inner tube
Slightly pre-inflate the inner tube to avoid any risk of it being pinched. Insert the valve, making sure you are using the correct valve for your rim.
Put the inner tube entirely inside the tire so that it fits inside the rim.
Take care not to pinch the inner tube when fitting.
Mounting the tire
Start by mounting the tire onto the wheel on the opposite side to the valve.
Finish mounting the tire at the valve to avoid pinching the inner tube.
Never mount your tire using a screwdriver or a tire lever as you risk pinching and puncturing the inner tube.
Inflating the tire
Inflate your tire carefully to the pressure recommended by the manufacturer (visible on the sidewall of the tire in PSI or bars; 1 bars = 14.51 PSI).
Regularly check that your tire is in the correct position as you inflate it.
Tip from the pros
To avoid punctures due to the inner tube being pinched, and to get the best performance out of your tire, we recommend checking your tire pressure and inflating it if necessary before each ride.
To guarantee optimal quality, 100% of our inner tubes are inflated for a period of 8 hours.
Membrane/coating : 100.0% Rubber - Synthetic
Take care not to pinch the inner tube when mounting it on.
Carry your inner tubes in a container to protect them from punctures (tool case, original packaging, bag, etc.).
Wheel size is printed on the sidewall of your tire. Always carry a spare inner tube and a pump.
Warning for California customers
Bike Inner Tube Twin-Pack 700x18-25 Presta Valve 48 mm reviews