QC15 and QC20 attach alignment targets to the tire during wheel-alignment measurement. Wheel balancers use separate shaft, cone, collet or flange mounting systems.
QC15 and QC20 belong to wheel alignment.
They grip the tire rather than the rim.
They carry an alignment target.
Balancer mounting uses different adapters.
What QC15 and QC20 do
The clamps create a stable target reference on the tire sidewall while avoiding direct contact with the rim during normal use. The aligner cameras observe the targets to calculate wheel geometry.
Why they do not belong on a balancer
A balancer must center and rotate the complete tire-and-wheel assembly on its shaft. That requires a cone, collet, flange plate or another approved centering adapter—not an alignment target clamp.
Choosing between QC15 and QC20
QC15 supports common passenger-vehicle tire sizes. QC20 extends the range for larger tire assemblies. Confirm the selected aligner configuration and operating range.
Accessory identification checklist
- Product category confirmed as wheel alignment
- Target interface confirmed
- Tire size within clamp range
- Rim-protection requirement reviewed
- Aligner configuration compatibility confirmed
- Balancer adapters specified separately
Accessory comparison questions
| Question | Why it matters | What to confirm |
|---|---|---|
| Does the accessory carry an alignment target? | Target clamps belong to the alignment measurement chain. | QC15 or QC20 compatibility. |
| Does the accessory center a wheel on a rotating shaft? | That is a wheel-balancer function. | Cone, collet or flange adapter. |
| Is rim contact being avoided? | Tire-grip aligner clamps can protect wheel finishes. | Clamp range and approved tire contact points. |
Frequently asked questions
What is the QC15 range?
QC15 is the smaller tire-grip aligner clamp, designed for tire outer diameters up to approximately 32 inches by current specification.
What is the QC20 range?
QC20 is the larger aligner clamp, designed for approximately 20–42 inch tire range by current specification.
Can either clamp be shown on a balancer product page?
No. They should appear only under alignment systems and alignment accessories.
Practical reference · Published 2026-07-17. Confirm final product configuration and local requirements before purchase or service.