Schwalbe SX-R at a glance
| Brand | Schwalbe |
|---|---|
| Type | BMX/Dirt |
| Sizes | 3 ETRTO sizes |
| Width range | 30–47 mm |
| Fits rims | 451 mm, 406 mm |
| Weight range | 220–295 g |
| Tubeless ready | Not listed |
| E-bike rating | — |
Whether the Schwalbe SX-R fits your bike is decided by one number: the bead seat diameter, the second half of an ETRTO size. This tire is made for 451 mm and 406 mm rims — 20-inch wheels. If your rim matches, the only remaining question is width, and that is a matter of frame and fork clearance rather than of fit.
Schwalbe SX-R sizes
Each size below links to every tire available in it, so you can see what the SX-R is competing against before you commit to it.
All 3 listings
3 listings across 3 sizes. The “printed as” column is Schwalbe's own marking for that size, which is what you will find on the sidewall and in most shop listings.
| ETRTO | Printed as | Weight | Build |
|---|---|---|---|
| 30-451 | 20x1 3/8 | 220 g | Black |
| 42-406 | 20x1.60 | 255 g | Black |
| 47-406 | 20x1.85 | 295 g | Black |
How the Schwalbe SX-R compares on weight
Each row weighs the lightest listed Schwalbe SX-R in that size against the lightest listing of every other model available in the same size. Models are compared once regardless of how many colours they come in, and tires with no published weight are left out of the ranking entirely.
| Size | This tire | Median for the size | Rank |
|---|---|---|---|
| 47-406 | 295 g | 545 g | 1st lightest of 11 |
Specifications here come from Schwalbe's own published data. For compound, casing and pressure detail we do not hold, see the manufacturer's page for the SX-R.
Schwalbe SX-R questions
What sizes does the Schwalbe SX-R come in?
Our database lists the Schwalbe SX-R in 3 ETRTO sizes: 30-451, 42-406, 47-406.
How much does the Schwalbe SX-R weigh?
Manufacturer weights for the Schwalbe SX-R run from 220 g to 295 g depending on size and casing.
Will the Schwalbe SX-R fit my wheels?
It fits 20-inch wheels. Check the second number of your current tire's ETRTO size — if it matches one of 451 and 406 mm, the Schwalbe SX-R mounts on your rim. Width is limited by frame and fork clearance, not by the rim diameter.