What should I consider?

Two things: The ETRTO and the inner tube.

✅ The correct size for Armour is the same as your tire size. Pay attention to the ETRTO.

✅ The inner tube should be slightly smaller than usual. Don't worry, we show you the correct size when selecting your Armour on the product page.

✅ Tannus Armour is compatible with all clincher-type rims.

The ETRTO?

Almost all tires have their size (ETRTO) written on them. Take a look on the side of your tire to check it.

If you have a city bike or a touring bike, you might often see the letter "C" following one of the numbers.

Compatibility chart

Find the size of your tire (ETRTO) to know the compatible Armour for it.

TIRE/ARMOUR SIZE Inner tube size WEIGHT(Gr)
20″ x 1.75-1.90″ 20″ x 1.5-1.95″ 190
20″ x 1.95-2.5″ 20″ x 1.95-2.1″ 220
20″ x 3.0-4.0″ 20″ x 2.4-4.5″ 360
20″ x 4.1-4.8″ 20″ x 3.6-4.8″ 370
24″ x 1.95-2.5″ 24″ x 1.95-2.1″ 270
24″ x 3.0-4.0″ 24″ x 2.4-3.0″ 480
TIRE/ARMOUR SIZE Inner tube size WEIGHT(Gr)
26″ x 1.6-1.9″ 26″ x 1.1-1.5″ 260
26″ x 1.95-2.5″ 26″ x 1.95-2.1″ 300
26″ x 4.0-4.8″ 26″ x 3.8-4.8″ 550
27.5″ x 1.95-2.5″ 27.5″ x 1.95-2.1″ 310
27.5″ x 2.6-3.0″ 27.5″ x 2.0-2.4″ 330
TIRE/ARMOUR SIZE Inner tube size WEIGHT(Gr)
29″ x 1.95-2.5″ 29″ x 1.95-2.1″ 320
29″+ x 2.6-3.0″ 29″ x 2.0-2.4″ 350
700 x 28-34c 700 x 20-25c 200
700 x 35-40c 700 x 20-28c 230
700 x 42-47c 700 x 28-40c 290