Fit a new tube
Free the valve
With the wheel out, remove the valve using a valve key. While the air is escaping, check the tyre’s size/type and make a note of the wheel rotation. Break the bead on both sides and lever off the rim.
Tease out the tube
Gently tease out the inner tube then knock the tyre off the rim using a rubber mallet before inspecting the rim and rim tape for damage. Then lube the new tyre with tyre soap and pop onto the rim.
Fit the tube inside the new tyre, locate and fit the valve stem. Fit the retaining nut and do it up enough to get a pump or airline fitting on. Partially inflate the tube before levering the tyre onto the rim.
Listen for pops
Slowly inflate the tyre, making sure the bead pops out evenly all the way round. Then place on to a wheel balancer – taking care to remove any rim stickers or wheel weights before you do so.
How to replace your inflatables