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As Gerorge Orwell didn't say "All tubes are equal, but some are more equal than others"
Schwalbe perform a leak test on all of the tubes they make (twice), including inflation for 24 hours to ensure they maintain their air pressure. The valve has a replaceable core (not found on all inner tubes)
Because the inner tube has better retention of air, it means you have to spend less time inflating and more time for you, whether it's riding, in bed before work or at the office
You should still check the tyre pressure monthly (for most tubes it's weekly). Running a tyre under inflated will mean that you need to put more effort into cycling and can result in damage to the tube / tyre or even the rim
| This Schwalbe AV4 inner tube fits ETRTO tyre sizes as shown below: |
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| ETRTO size |
Traditional size description |
| 37-340 |
16 x 1 3/8" and 400 x 35A |
| 28-349 |
16 x 1 1/8" |
| 37-349 |
16 x 1 3/8" |
| 28-355 |
18 x 1 1/8" |
| 35-355 |
18 x 1.35" |
| 35-349 |
16 x 1.35" |
| (The ETRTO size is the most accurate way of selecting the correct inner tube and can be found on the side of the tyre) |
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Q: What is the purpose of a rim nut?
A: Bear in mind that unlike this tube some inner tubes don't have a rim nut
The rim nut secures the valve into the rim
Your bike can be ridden perfectly safely without a rim nut
It comes in useful when installing a tyre or attaching a pump - as it helps stop the valve being pushed inside the rim
With some rims there may be a rattle/noise if the valve is not fixed - that is why often valves without a rim nut are coated in rubber
The rim nut must only be tightened by hand
Never tighten the rim nut with pliers, as this can lead to inner tube damage
Q: What is the valve cap for?
The clear valve cap supplied with the Schwalbe inner tubes should be used, especially with Schrader / car type valves. It prevents dirt / water and chemicals from getting inside the valve and causing corrosion and damage - meaning the valve / tube will last longer.
| The Schwalbe AV4 inner tube is compatible with the following tyres (and more): |
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| Tyre name |
Tyre size |
| Brompton Schwalbe Marathon Racer (black reflective / tan wall) |
35-349 - 16 x 1.35 inch |
| Schwalbe Marathon |
35-349 - 16 x 1.35 inch |
| Schwalbe Marathon plus tyre |
35-349 - 16 x 1.35 inch |
| Brompton Schwalbe Marathon Allmotion (black / tan wall) |
35-349 - 16 x 1.35 inch |
| Brompton Schwalbe One 16 inch tyre (black / tan wall) |
35-349 / 16 x 1.35 inch |
| Brompton Continental Compact Urban 16 inch tyre (all colours) |
35-349 / 16 x 1.35 inch |
| Schwalbe Winter studded tyre |
30-349 / 16 x 1.2 inch |
| Schwalbe Kojak wired tyre |
32-349 / 16 x 1 1/4 inch |
| Brompton Schwalbe Kojak tan wall folding tyre |
32-349 / 16 x 1 1/4 inch |
| Brompton Schwalbe Kojak folding tyre with reflective sidewall |
32-349 / 16 x 1 1/4 inch |
| Brompton Green / Kevlar tyre |
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