Size at a glance
| ETRTO / ISO | 25-451 |
|---|---|
| Metric / French | — |
| Imperial (calculated) | 20 x 0.98 |
| Tire width | 25 mm (0.98 in) |
| Rim bead seat diameter | 451 mm |
| Common wheel name | 20-inch |
ETRTO is the only tire size standard that describes a real, measurable dimension, which is why it is the one worth trusting. Read 25-451 as “25 mm wide, on a 451 mm rim”. If the second number matches your rim, the tire fits.
All 1 tire in 25-451
4 listings across 1 model, 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 | RightRun | Trekking/City | 260 g | Black | Details |
| Schwalbe | RightRun | Trekking/City | 260 g | Blue Stripes | Details |
| Schwalbe | RightRun | Trekking/City | 260 g | Grey Stripes | Details |
| Schwalbe | RightRun | Trekking/City | 260 g | Red Stripes | Details |
Search another size in the tool
Close alternatives for a 451 mm rim
These tires have a different width but the same 451 mm bead seat diameter, so they mount on the same wheel. Widths within ±3 mm of 25 mm are shown. Check your frame and fork clearance before going wider.
| Brand | Model | Type | ETRTO | Weight | Build | Link |
|---|---|---|---|---|---|---|
| Maxxis | DTH | BMX/Dirt | 28-451 | 262 g | Black | Details |
| Schwalbe | One | Road | 28-451 | — | E-25 | Details |
Brands making 25-451 tires
Schwalbe.
Other sizes for 20-inch wheels
Every size below fits the same 451 mm rim.