WTB ST at a glance
| Brand | WTB |
|---|---|
| Type | MTB |
| Sizes | 6 ETRTO sizes |
| Width range | 19–25 mm |
| Fits rims | 622 mm, 584 mm, 559 mm |
| Weight range | 507–597 g |
| Tubeless ready | All sizes |
| E-bike rating | — |
Whether the WTB ST fits your bike is decided by one number: the bead seat diameter, the second half of an ETRTO size. This tire is made for 622 mm, 584 mm and 559 mm rims — 700C / 28-inch / 29-inch wheels, 650B / 27.5-inch wheels and 26-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.
WTB ST sizes
Each size below links to every tire available in it, so you can see what the ST is competing against before you commit to it.
All 6 listings
6 listings across 6 sizes. The “printed as” column is WTB'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 |
|---|---|---|---|
| 19-622 | 29x0.75 | 507 g | Tubeless |
| 23-622 | 29x0.90 | 583 g | Tubeless |
| 25-622 | 29x1.00 | 597 g | Tubeless |
| 25-584 | 27.5x1.00 | — | Tubeless |
| 23-559 | 26x0.90 | 526 g | Tubeless |
| 25-559 | 26x1.00 | 538 g | Tubeless |
How the WTB ST compares on weight
Each row weighs the lightest listed WTB ST 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 |
|---|---|---|---|
| 23-622 | 583 g | 230 g | 34th lightest of 34 |
| 25-622 | 597 g | 260 g | 43rd lightest of 43 |
| 25-559 | 538 g | 499 g | 5th lightest of 5 |
Specifications here come from WTB's own published data. For compound, casing and pressure detail we do not hold, see the manufacturer's page for the ST.
WTB ST questions
What sizes does the WTB ST come in?
Our database lists the WTB ST in 6 ETRTO sizes: 19-622, 23-622, 25-622, 25-584, 23-559, 25-559.
How much does the WTB ST weigh?
Manufacturer weights for the WTB ST run from 507 g to 597 g depending on size and casing.
Is the WTB ST tubeless ready?
Yes. All 6 listed sizes of the WTB ST are marked tubeless ready.
Will the WTB ST fit my wheels?
It fits 700C / 28-inch / 29-inch wheels, 650B / 27.5-inch wheels and 26-inch wheels. Check the second number of your current tire's ETRTO size — if it matches one of 622, 584 and 559 mm, the WTB ST mounts on your rim. Width is limited by frame and fork clearance, not by the rim diameter.