Pololu Wheel 90×10 mm (item 1435): tire, rim, 3 mm D-bore and hub mounting holes — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/pololu-wheel-90x10mm/  (sheet CC BY 4.0)
Basis: Pololu's own STEP model of the 90×10 mm wheel, checked against the Pololu wheel dimension diagram.
Catalog version: 2026-10-20

Overall (mm): length 90.0, width 90.0, height 11.75
- Datum: wheel axis on Z, rear hub boss on z=0, centre of the D-bore at x=0, y=0; same geometry for every colour (items 1435–1439).
- Tire Ø90.0 × 7.3 wide on a rim Ø80.0 × 10.0 wide; the rear boss Ø6.6 protrudes 1.75 below the rim.
- Hub bore: 3.0 mm D-bore with the flat 1.0 mm from the axis, through the full hub.
- Six Ø3.1 mounting holes through the hub (5.0 deep) on a Ø19.05 bolt circle: (0, ±6.35) and (±8.25, ±4.76).
- Modelled: tire, rim, inner flange, six spokes, hub disc Ø32.0 and boss Ø16.0. Not modelled: tread detail, the R2.5 rounds in the spoke openings and small hub fillets.
- All dimensions are exact nominal mm.

hole  x (mm)  y (mm)  diameter (mm)
1  0  6.35  3.1
2  0  -6.35  3.1
3  8.25  4.76  3.1
4  8.25  -4.76  3.1
5  -8.25  4.76  3.1
6  -8.25  -4.76  3.1

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- Pololu: Pololu Wheel 90×10mm 3D model (STEP) — web — Publisher's page; dimensions are facts — https://www.pololu.com/file/0J1295/pololu-wheel-90%C3%9710mm.zip
- Pololu: Pololu wheel dimensions diagram (PDF) — web — Publisher's page; dimensions are facts — https://www.pololu.com/file/0J1708/pololu-wheel-dimensions.pdf
- Pololu: Pololu Wheel 90×10mm Pair – Black (item 1435) — web — Publisher's page; dimensions are facts — https://www.pololu.com/product/1435

Free files (CC BY 4.0, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/pololu-wheel-90x10mm/index.json
API: https://xemstudio.com/api/geometry?object=pololu-wheel-90x10mm