The lug nuts on a Toyota Sienna use a 21mm hex socket, with M12x1.5 threads, a 60-degree conical (acorn) seat, and a 5x114.3 mm bolt pattern. In practice, you’ll typically need a 21mm wrench to install or remove them.
These specifications cover the vast majority of Sienna models, but variations can exist by year, trim, or aftermarket wheels. Always confirm with your owner’s manual or a parts diagram for your exact vehicle.
Key specifications
The following specs cover the essential measurements you’ll encounter when replacing lug nuts or selecting a wheel socket.
- Bolt pattern: 5 bolts on 114.3 mm (5x114.3).
- Thread size: M12 x 1.5.
- Nut seat type: 60-degree conical (acorn) seat.
- Nut head size: 21 mm.
- Number of lug nuts per wheel: 5.
In most Sienna models, these specs are standard across common trims and generations, but variations can exist with aftermarket wheels or unusual configurations. Verify for your specific vehicle if you’ve altered the wheels.
Year and model considerations
Common variations by generation
Nearly all Toyota Sienna models across generations use a 5x114.3 mm bolt pattern and M12x1.5 lug studs with 60-degree conical lug nuts, requiring a 21 mm socket. If you’ve installed aftermarket wheels or run a rare trim, double-check the exact specs on the wheel package or owner's manual.
Always consult the official owner’s manual or Toyota service information for precise torque values and any deviations for your specific vehicle.
Conclusion
For most Sienna owners, lug nuts are 21mm hex, with M12x1.5 threads, 60-degree conical seats, five lug nuts per wheel, and a 5x114.3 mm bolt pattern. Confirm with your VIN or wheel spec sheet when sourcing replacements or tools.
Summary
The Toyota Sienna uses standard lug nut specs: 21mm socket size, M12x1.5 thread, 60-degree conical seat, five nuts per wheel, and a 5x114.3 mm bolt pattern. This information aids in maintenance and tool selection.