The fit comparison
Compare the published fit limits
Match the chair’s approved tread and fitting. The two 11 × 22 mm examples have different wheel profiles.
Scroll across the table for every fit check.
| Model | Stem | Wheel profile | Fit check |
|---|---|---|---|
| Desktronic rubber castors, black Single-wheel profile | 11 × 22 mm | Single polyurethane-tread wheel | Measure overall fitted rise and floor clearance. |
| HOLKIE 2-inch twin castors, grey Compact twin-wheel profile | 11 × 22 mm | 2-inch polyurethane twin wheel | Confirm wheel clearance and floor suitability. |
Start with the floor you actually roll on
Check the chair instructions for its castor options. Steelcase distinguishes hard dual wheels for carpet from soft dual wheels for hard surfaces in its specification guide. Some manufacturers specify a soft tread for both surfaces. Use the recommendation for your chair and floor finish. Treat a rug edge or floor mat as a separate transition rather than assuming it behaves like the floor below.
On hard floors, grit can mark the surface under any wheel. Keep the wheels and floor clean and check whether your flooring maker recommends a particular mat or tread. On carpet, note the pile and underlay. A wheel that moves easily on a low-pile sample can sink into softer carpet, particularly at the edge or with weight on the chair.
Desktronic single wheels with a soft tread
The black Desktronic set uses an 11 × 22 mm stem and polyurethane tread. Desktronic lists hard-floor and carpet use. Confirm the stem and fit with the chair maker, including the installed height and how far the wheel projects behind the stem.
Single-wheel profile
Desktronic rubber castors, black
These replacement castors have polyurethane treads and listed 11 × 22 mm stems. Desktronic lists use on hard flooring and carpet.
Match the stem and confirm the complete replacement is approved for your chair. Check the fitted rise and wheel sweep.
- 11 × 22 mm stem
- Polyurethane tread
- Set of five
A wheel with a larger fitted rise can raise the seat enough to affect foot support, armrest clearance and knee room. Compare the floor-to-base measurement before and after an approved swap rather than using wheel diameter alone.
HOLKIE twin wheels with a compact profile
The selected grey HOLKIE set has a 2-inch twin-wheel design and 11 × 22 mm stems. The listing describes a soft polyurethane tread for hard floors and carpet. Check the actual carpet and underlay, and confirm that the wheel shoulders and housings clear the base throughout a swivel.
Compact twin-wheel profile
HOLKIE 2-inch twin castors, grey
A compact twin-wheel replacement with a polyurethane tread and a listed 11 × 22 mm push-in stem.
Check the stem shoulder and how the complete wheel sits in the base. Confirm the tread is suitable for your exact flooring.
- 11 × 22 mm stem
- 2-inch twin wheel
- Set of five
If the chair originally has braking castors, check whether the approved replacement preserves the same behaviour. Test on a level surface first, with room around the chair and no loose cables or mats in its path.
Recheck sitting height and roll after a change
Use a matching set that your chair maker approves. Test that each wheel seats fully and turns freely. Move the empty chair first, then try normal desk movement under load. Check that it clears the rug edge without twisting the base or rolling away unexpectedly when you approach it.
Measure the seat at your normal setting after fitting. Reset height and armrests if needed, and check footrest clearance if you use one. Keep the original approved wheels if you change rooms and need a different tread.
Common questions
Are rubber-tread castors better for wooden floors?
Soft treads are commonly specified for hard surfaces. Follow the chair and floor makers’ guidance and keep the floor clean.
Can I use hard castors on carpet?
Some chair makers specify hard twin wheels for carpet. Check your chair’s approved option and test the pile and underlay.
Do larger wheels raise the chair?
They may. Compare the installed height from the floor to the same point on the base.
Will 11 × 22 mm castors fit every chair?
Measure the existing stem and check the maker’s fitting. Diameter, length, shoulder and retention all matter.
Should I mix old and new wheels?
Use a matching approved set so the height and rolling behaviour are consistent around the base.
Sources and selection
Sources and Amazon UK listings checked in November 2026. Fit examples use published specifications. The selected Amazon UK listings supply the specifications for HOLKIE 2-inch twin castors, grey.