Bead seating is the controlled inflation process that moves both beads into their wheel seats without exceeding approved pressure.
Inflation is a high-energy process.
Confirm tire and wheel match.
Stand clear of trajectory zones.
Stop if beads do not seat within limits.
Verify compatibility
Confirm size, wheel diameter, orientation, bead condition and valve installation before adding pressure.
Controlled pressure rise
Use approved lubricant and increase pressure gradually from a safe position. Watch for uneven seating or distortion.
After seating
Set operating pressure, leak-test the valve and both bead areas, and inspect the seating line completely.
Diagnostic reference
| Finding | Possible meaning | Next check |
|---|---|---|
| One bead not moving | Lubrication or position issue | Deflate and inspect |
| Tire distorts | Mismatch or structural issue | Stop immediately |
| Bead line uneven | Incomplete seating | Deflate and reseat |
Workshop procedure
- Verify compatibility.
- Inspect beads and rim.
- Lubricate.
- Connect safe inflation equipment.
- Increase pressure gradually.
- Stop at abnormal seating.
- Set operating pressure and leak-test.
Frequently asked questions
Can flammable products seat a bead?
No. This is extremely dangerous.
Why use a clip-on chuck?
It lets the technician stand away during inflation.
What if the bead will not seat?
Deflate and reassess rather than exceeding limits.
Technical review edition · Published 17 July 2026.