Size at a glance
| ETRTO / ISO | 40-635 |
|---|---|
| Metric / French | 700x40B |
| Imperial (calculated) | 28 x 1.57 |
| Tire width | 40 mm (1.57 in) |
| Rim bead seat diameter | 635 mm |
| Common wheel name | 700B / 28-inch |
ETRTO is the only tire size standard that describes a real, measurable dimension, which is why it is the one worth trusting. Read 40-635 as “40 mm wide, on a 635 mm rim”. If the second number matches your rim, the tire fits.
Sidewall markings for this size are not consistent between brands. The same 40-635 tire is also printed as 28x1 1/2, 700x38C — all of these describe the same rim fit.
All 2 tires in 40-635
2 listings across 2 models, sorted by brand and weight. Where one model appears more than once, those are genuinely different products — a different casing, colour or claimed weight.
| Brand | Model | Type | Weight | Build | Link |
|---|---|---|---|---|---|
| Schwalbe | Green Marathon | Trekking/City | 500 g | Black+Reflex · E-25 | Details |
| Schwalbe | Marathon Plus | Trekking/City | — | Black+Reflex · E-50 | Details |
Search another size in the tool
Brands making 40-635 tires
Schwalbe.
Other sizes for 700B / 28-inch wheels
Every size below fits the same 635 mm rim.