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Schwalbe AV4 Schrader Tube - 400a/16"/18" Tyres - 37-340 28-349 to 37-349 & 28-355 to 35-355

Customer Reviews (14)

4.9 / 5| Write your review

£4.99

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Details

Schwalbe tubes are designed & manufactured to retain air pressure considerably longer than their competitors. Not only is each individual tube inflated & inserted into a mould to ensure that there is even wall thickness & excellent air retention, they are also stored under pressure for 24hrs to test air retention. Valve length of 40mm for standard version. Weight 85g.

Fits Brompton wheels, 28mm-37mm tyres - Highest quality inner tube for Brompton we know of!

Applicable Tyre Sizes:
37-340 - 16 x 1 3/8 - 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

Product Reviews (14)

Questions & Answers (2) Q & A

Specification

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Product Reviews (14)

Overall Product Rating 4.9 / 5

The best tubes for a Brompton

By Anthony de Maillet

01 Apr 2025

5 / 5

I recommend this product

These are the best tubes for a Brompton. Consistent quality and not too heavy, nor too expensive.

Easy to fit, good valve support

By Jerry W

11 Apr 2024

5 / 5

I recommend this product

Best inner tube I've found for a Brompton with Schwalbe or Brompton-branded tyres.

Excellent tube

By Martin Hine

07 Mar 2024

5 / 5

I recommend this product

ConsNone

ProsExcellent, good quality tube

Bought a couple of these for Brompton. Great quality tube at competitive price. Seem to hold air pretty well between topping up. I believe you can get thinner, lighter tubes but this tube works well for everyday use.

Does the job

By Brian

10 Mar 2021

5 / 5

I recommend this product

Consnone

ProsMatches the tyre

Hidden from view of course but good to know you have a branded tube in the tyre

Excellent product, very good customer service.

By Denis Odintsov

23 May 2020

5 / 5

I recommend this product

ConsNo

ProsValue for money

Excellent product, very good customer service.
Happy with purchase.

Excellent

By Steve English

12 Feb 2019

5 / 5

I recommend this product

Metal valves are a must, these do the job spot on.

Brilliant !!!

By Lefteris

02 Nov 2017

5 / 5

I recommend this product

ConsNone

ProsLight and trustworthy

I would only trust Schwalbe inner tubes for pressures reaching up to 120psi. Light and easy to install. Maintain their pressure for long even at tree digit figures.

Fitted Moulton Standard wheels just fine

By Martyn

02 Oct 2017

5 / 5

I recommend this product

Used these inside new Schwalby Marathon tyres to replace failing tubes and tyres on an old Moulton Standard. All fitted fine but its early days to see how well they hold up in use.

By David Curry

17 May 2017

4 / 5

I recommend this product

Whoever dreamed up the idea of a transparent valve cap? Warning - hang on to your old black cap!

Excellent

By Paul Wilson

07 Sep 2016

5 / 5

I recommend this product

ConsNone

ProsHigh quality

Not much to say really, they just work.

Good Upgrade

By Anonymous

30 Jul 2015

5 / 5

I recommend this product

Prosquality, good price

Replaced the Brompton inner tubes with these immediately I got the new bike. Having toured on a Thorn Raven using Schwalbe inner tubes it is a must do upgrade for any Brompton. They hold the pressure well and the rubber is of a higher quality than the Brompton tubes. Excellent!

I Must Remeber Not To Buy Any Other Brand!

By pgm

19 Mar 2013

5 / 5

I recommend this product

ProsThreaded, quality

The threaded stem makes these easier to fit and remove than the unbranded tubes fitted by Brompton.

Good For A Brompton

By ianmac55

31 Aug 2011

5 / 5

I recommend this product

ConsNone

ProsFits a Brompton

Good reliable tube for a Brompton.

Best For Brompton

By JS

16 May 2011

4 / 5

I prefer these tubes for my Brompton because the metal valves are less prone to failure. Rubber stemmed valves tend to crack because the small wheels make it trickier to get the pump nozzle in so the valve gets more stressed: metal is better.

Questions & Answers (2)

Hi I’m looking for superlight innertube for Brompton please let me know if you can provide that

By Angel Traykov

23 Oct 2020

Hi I’m looking for superlight innertube for Brompton please let me know if you can provide that

SJS Customer Service:

We do not currently have anything "superlight" take a look at Tubolito!

Thanks 23/10/20

Are These Tubes Compatible For Schwalbe Kojak Hs385 Tyre

By RAHUL VERMA

19 Apr 2015

Schwalbe Kojak HS385 Tyre, 16 x 1 1/4 Inch , 32349

SJS Customer Service:

Hi,

These are the correctly sized inner tubes to fit into those tyres.

Thanks.