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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.
ℹ 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.
FIND YOUR ARMOUR
Find the size of your tire (ETRTO) to know the compatible Armour for it.
| Cover / 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 |
| Cover / 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 1.75-2.1" | 300 |
| 26" x 2.6-3.0" | 26" x 1.75-2.4" | 430 |
| 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 |
| Cover / 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 |