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Using the wrong seat type can cause wheels to loosen, vibrate, or even detach while driving.
The "seat" is the part of the locking bolt or nut that contacts your wheel. Each wheel is designed for a specific seat shape. Mixing seat types won't properly centre or secure your wheel — this is especially critical for security locking kits.
Tapered (Conical)
60° angled seat. Common on BMW and many aftermarket wheels.
BMW / AftermarketRadius (Ball)
Rounded seat, typically R12-R14 radius. Used by VW, Audi, Mercedes, Skoda, and VAG group.
VW / VAG / MercedesFlat (Mag / Washer)
Flat contact surface with washer. Common on Toyota, Lexus, Land Rover, and mag-style aftermarket wheels.
Toyota / Land RoverTuner (Spline Drive)
Narrow body with tapered seat. Fits small wheel holes, requires special key. Popular for aftermarket wheels.
Aftermarket
Not sure? Check your wheel documentation or measure the existing bolt hole. Your locking kit must match the same seat type as your standard wheel bolts or nuts.
Locking wheel nuts for the GMC Canyon III (GMT 31XX-2) (2023–2026)
A locking wheel nut set for the GMC Canyon III (GMT 31XX-2) (2023–2026) is M14 x 1.5 with a tapered (60° conical) seat to match the original wheels — one locking nut per wheel, four per set.
| Fixing | Locking nuts |
|---|---|
| Thread | M14 x 1.5 |
| OE seat type | Tapered (60° conical) seat |
| Torque | 190 Nm |
Seat type must match the wheels the nuts secure, not just the vehicle: this vehicle's original wheels take a tapered (60° conical) seat, but most aftermarket alloys use a 60° conical seat. If the car is on aftermarket wheels, check the wheel's seat before ordering — nuts with the wrong seat are unsafe at any torque.
Also for this vehicle: Alloy wheels · Wheel nuts & bolts · Spigot rings
