Schwalbe Marathon Plus SmartGuard Endurance Performance Wired 20" Tyre

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Please note: View 'Tyres Guide' below for ETRTO Sizing

Product Description

The NEW Marathon Plus tyre has been revamped after 10 years of great success. With a new tread pattern and many internal improvements, get ready for this to be even better than its predecessor.

The Flat-less tire. Schwalbe's best selling model. The most puncture resistant pneumatic tire there is. In addition to the superior puncture protection it features many hidden values: Rolling resistance. The patented, 5 mm thick SmartGuard layer, when compared to all generic products, has a significant advantage in rolling resistance. Recycling. Also in the SmartGuard, we use a proportion of recycled rubber from old latex products. “Anti-aging” side wall. It now lasts much longer before developing unsightly cracks when subjected to use with too low air pressure. E-Bike ready. Due to its great properties Marathon Plus is an ideal choice for E-Bikes (E-25). The main sizes are approved and tested for E-bikes up to 50 km/h.

Are you mainly a city cyclist? Are your countryside trips mostly on dirt tracks? Want your mountain bike to be as puncture-proof as possible too? There’s the right flat-less tyre for all these scenarios. And good news for all e-bike riders: all our flat-less tyres are perfect for e-bike use too!

The Marathon Plus ORIGINAL with unusually low rolling resistance is our best-selling tyre. The Marathon Plus TOUR with its distinctive trekking tread is the versatile tyre for asphalt and dirt roads. The new Marathon Plus MTB provides powerful drive and strong grip in off-road terrain but also rolls effortlessly on paved roads thanks to its centre rib.

Key Features:

  • Wired Tyre
  • Endurance Compound
  • Integrated SmartGuard
  • TwimSkin sidewalls
  • Weight: 700x25c 595g / 700x28c 750g / 700x32c 810g / 700x35c 900g / 700x38c 960g, 26: 26x2.35 775g / 26x1.50 870g / 26x1.75 995g / 26x2.00 1100g, 27.5x1.50 920g 

Occasionally, without notice, manufacturers change product design and/or specifications.

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Schwalbe Folding Bike Tyre Chooser

Schwalbe logo

Schwalbe tyres are rated on a score from 1 to 6 with 1 being entry-level and 6 being pro level. Schwalbe tyres are rated on construction, rolling, road grip, off-road grip, protection and durability.

Schwalbe Folding Bike Tyres

TyreConstructionRollingRoad GripOff-Road GripProtectionDurability
Marathon GreenGuard 4 4 2.5 5 5.5
Marathon Racer RaceGuard 5 5 2 4 4


TyreConstructionRollingRoad GripOff-Road GripProtectionDurability
Tracer K-Guard 3 3 2 3 3


TyreConstructionRollingRoad GripOff-Road GripProtectionDurability
Pro One MicroSkin I TL Easy 6 5 1.5 5.5 4
One V-Guard 5 5 1 4.5 4


TyreConstructionRollingRoad GripOff-Road GripProtectionDurability
Big Apple RaceGuard 4.5 4 2.5 4 4
Big Apple K-Guard 3.5 3 2.5 3 3
Big Apple Plus Big Apple Plus 4 4 2.5 5 4


TyreConstructionRollingRoad GripOff-Road GripProtectionDurability
CX Comp K-Guard 3.5 3 3 3 3


TyreConstructionRollingRoad GripOff-Road GripProtectionDurability
Durano RaceGuard 4 5 1 4 5
Durano Plus SmartGuard 3.5 5 1 6+ 5


TyreConstructionRollingRoad GripOff-Road GripProtectionDurability
Kojak RaceGuard 5 5 1.5 4 4


TyreConstructionRollingRoad GripOff-Road GripProtectionDurability
Big Ben RaceGuard 4.5 4 3 4 4
Big Ben K-Guard 3.5 3 3 3 3
Big Ben Plus Big Ben Plus 4 4 3 6 4


TyreConstructionRollingRoad GripOff-Road GripProtectionDurability
Tryker RaceGuard 5 5 2 4 5


TyreConstructionRollingRoad GripOff-Road GripProtectionDurability
Delta Cruiser Plus Delta Cruiser Plus I K-Guard 2 3 2 5 3

Please note, all size information is provided as a guide - if you're unsure or need any further assistance you can call us on 01792 799508 ... we're happy to help!

Folding Bike Tyre Guide


Folding Bike Tyre Guide

Folding bike tyres are tyres that are designed specifically to fit the wheels of folding bikes. Most folding bikes have smaller wheels than urban road and hybrid bikes, so we’ve placed them all in a category of their own. If you can’t find the exact same tyre as you have on your bike, then another tyre of the same size will be fine.

Please note: the term ‘folding tyre’ refers to the bead of the tyre rather than the type of bike that the tyre is to be fitted to. Both ‘wired’ and ‘folding’ bead tyres are suitable for folding bikes as long as they are the right size.

What size tyre do I need for my folding bike?

You will need a tyre that is the same size as the wheel on your folding bike. If you aren’t sure what size you need have a look at the side walls of your existing tyre, the size will be written there.

Brompton folding bikes all have 16” wheels with a 349 ETRTO number. Tern folding bikes have 20” wheels or larger.

See the table opposite for typical folding bike tyre sizes

ETRTO Number

Tyre Dimension

32 - 349

16 x 1 ¼

35 - 349

16 x 1.35

32 - 355

18 x 1.25

40 - 406

20 x 1.5

Can I fit a different size tyre to my folding bike?

You can fit a tyre with a different width as long as the diameter of the tyre is the same. A slightly narrower tyre of the same diameter will fit perfectly. You will need to make sure that you have enough clearance in the frame if the tyre is wider than your existing tyre.

For example: if you have a 16 x 1 1/4 (32–349) tyre fitted then a 16 x 1.35 (35–349) will fit as long as you have a little bit of extra clearance between the tyre and the frame as this tyre is about 3mm wider.

riding a brompton folding bike

Delivery & Guarantee

UK Delivery Information

International Deliveries – Temporarily Suspended 11/11/20

Note: We are still offering deliveries to the Isle of Man, Scottish Highlands, Scottish Islands, Channel Islands, Isle of Wight, Jersey and Guernsey. 

Courier Delivery update: Due to the COVID19 situation, we are currently experiencing some delays with deliveries. Our couriers are working around the clock to get your order to you as soon as possible but there is a potential delay of up to 48 hours . Please check your tracking on track your order here.

Please download the TNT Track and Trace App for iOS here and Android here so you can keep an eye on your delivery and any further updates.

Please note on the TNT tracking app it may show your delivery status as ‘Collecting’ (as per image below). This means your delivery has left our warehouse and is currently held at TNT main depot and there could be up to a 48 hour delay.

tnt delivery

Please keep checking the TNT tracking for further updates. On behalf of TNT we apologise for any delay and inconvenience this may cause. 

We are committed to offering fast and free delivery, whether you're ordering bikes, accessories or clothing. Our standard delivery service is FREE in the UK, regardless of the size and on all orders over £20.

Please note that bulky products and bikes shipped to outlying UK regions are excluded from free shipping.

Please note that Pre-Order dates can sometimes change due to updated stock information.

Click here for more UK and international delivery information.

Returns & Warranty

It's easy to return a product with our 365 day, hassle free returns. 

We will give you a full refund on any item that is returned to us unused/unfitted, in a resaleable condition and in its original packaging (where possible).

Please note: For hygiene reasons, we cannot accept returns of facemasks, undershorts or underwear if the item has been removed/unsealed from its original packaging.

If your item develops a fault or arrives damaged, please contact us first so we can resolve the issue for you as quickly as possible.

For more information please visit our Returns & Warranty page.