Wheelchair and mobility tyres are easy to misorder because many listings use familiar inch labels such as 24x1, 26x1 3/8 or 3.00-8. The safer compatibility route is to record the exact ETRTO, the rim style and the rim width. Solid tyres remove the inner tube, but they make the rim match and fitting method more important.
ETRTO first: 25-540 is not 37-590
The second ETRTO number is the bead-seat diameter. A wheelchair tyre marked 25-540 fits a different rim from a 37-590 tyre, even if both old labels mention 24 or 26 inch families. Do not replace a tyre by overall wheel size alone; read the sidewall or the old product record.
Solid tyre or pneumatic tyre?
A solid tyre such as a Greentyre Sport removes the need for an inner tube and pressure checks. It can be useful for daily mobility, care settings and low-maintenance use. A pneumatic tyre such as a Schwalbe Marathon Plus or RightRun keeps air volume and can feel more compliant, but needs a compatible tube, pressure checks and rim tape in good condition.
Rim width matters on solid tyres
The catalogue shows why the exact variant matters: Greentyre 24x1.00 / 25-540 appears with internal rim-width references such as 17-19 mm and 20-22 mm. Those are not just decorative details. A solid tyre fitted to the wrong rim width can be difficult to install, sit poorly or feel wrong in use.
Non-marking and hand contact
For indoor floors, look for non-marking wording. Schwalbe's wheelchair range uses Black'n Roll compounds for non-marking behaviour, while Rolko XSENSE product evidence lists a black non-marking solid compound for a 3.00-8 split-rim application. Also consider sidewall feel, especially where the user propels the chair by hand near the tyre.
Split rims, complete wheels and small mobility sizes
Some mobility tyres are intended for split or two-part rims, for example a Rolko 3.00-8 solid tyre for a 38 mm split rim. Other repairs are better handled as a complete wheel when the hub, axle or spokes are worn. A Rolko 16x1.75 right spoked wheel, for instance, adds side, hub bore and hub width checks to the tyre-size check.
Ordering checklist
- Read the old tyre sidewall and note ETRTO, inch marking and any profile code.
- Measure or confirm internal rim width, especially for Greentyre-style solid tyres.
- Confirm pneumatic, solid or split-rim construction before choosing a replacement.
- For wheel assemblies, check side, axle bore, hub width and brake or hand-rim details.
