Joyor S10-S-Z · Tyres & wheels

Tyre is worn or cracked

When the tread knobs are nearly flat or the rubber cracks, grip drops fast, especially in the wet.

Difficulty: HardTime: 1–2 hours7 things you need

Is this your problem?

  • Knobs on the tread are low or gone in the middle
  • Small cracks on the sidewall
  • Sliding on wet roads

Likely causes

1
Normal wearHow to tell: Rear tyres wear faster. Hard braking with the rear wears flat spots.
2
Age and sunHow to tell: Rubber cracks even on a scooter that is rarely ridden.
Check this first

Compare the middle of the tread with the edges. Look for cords showing through anywhere: that tyre must be replaced now.

What you need

Tools

Example photo: Tyre levers (2–3)Example photo
Tyre levers (2–3)

Plastic levers are kinder to the rim. Small scooter tyres are tight, so a strong nylon or steel-core pair helps.

Photo: Ian Harvey, Public domain, resized
Example photo: Spanners (combination wrenches)Example photo
Spanners (combination wrenches)

Metric. The axle nuts on 10-inch scooters are usually big (often 18 mm or more): measure yours before buying.

Photo: Fructibus, CC0, resized
Example photo: Socket set with ratchetExample photo
Socket set with ratchet

Metric sockets. A deep socket helps on axle nuts that sit on a long thread.

Photo: Kae, CC BY-SA 3.0, resized
Example photo: Hex (Allen) keys, metricExample photo
Hex (Allen) keys, metric

A metric set, roughly 2 mm to 8 mm. Long-arm keys reach the recessed bolts on the stem and deck.

Photo: Leon Brooks, Public domain, resized
Example photo: Pump with a pressure gaugeExample photo
Pump with a pressure gauge

A floor pump with a gauge. Scooters like this one normally have a car-style (Schrader) valve: check yours and make sure the pump head fits it.

Photo: Ewok Slayer, Public domain, resized
Example photo: Tyre pressure gaugeExample photo
Tyre pressure gauge

Any gauge that fits your valve. The gauge on a cheap pump can be off by a lot, so a separate one is worth it.

Photo: Simon Speed, CC0, resized

Parts

Example photo: Inner tube, 10 × 3Example photo
Inner tube, 10 × 3

Size 10 × 3 (also sold as 255 × 80 or 80/65-6), with a bent valve like your old one. Copy the size and valve from the old tube.

Photo: Oostblokblik, CC BY-SA 4.0, resized

Photos show the kind of tool or part, not a specific product. We don’t sell anything and get nothing from any shop.

Step by step

Tap a step when it’s done to keep your place.

  1. Get the right tyre

    Same size as yours: 10 × 3 (255 × 80 / 80/65-6), tubed, off-road tread. Joyor sells one listed for this model.

  2. Remove the wheel

    Exactly as in the flat-tyre guide, steps 1–5.

  3. Fit the new tyre with a new tube

    A new tyre is stiffer than the old one. Warm it in the sun first, and use soapy water on the bead.

  4. Seat, inflate, refit and test

    As in the flat-tyre guide, steps 9–11.

Stay safe

  • New tyres can be slippery for the first few km.

When to take it to a shop

If you cannot get the new tyre on; it can be really stiff.

Also check

Written for the Joyor S10-S-Z using the maker’s published specs and error list (Joyor technical guide) plus general repair practice for scooters built this way. Parts and fittings can change between production batches: if yours looks different, trust your scooter and its manual. Repairs are at your own risk.

Found a mistake? Tell us.