The standard lug nut hex size on most Subaru Crosstrek models is 19mm.
What follows is a detailed guide on verifying the size for your year and wheel type, plus torque figures and best practices for safe wheel maintenance.
Common socket size for Crosstrek lug nuts
Most Crosstrek lug nuts use a 19mm hex socket, but variations can appear with aftermarket wheels or special trims. Use the size that fits snugly to avoid rounding the nut or damaging your tool.
- 19mm hex is the typical size for factory Crosstrek lug nuts.
- Some aftermarket wheels or non-standard hardware may require a different socket size or a different lug-nut style (conical, ball-seat, or acorn). If 19mm doesn’t fit snugly, stop and check wheel specs.
- When in doubt, confirm the correct size by consulting the owner’s manual or the wheel manufacturer documentation, or test fit with a torque wrench in a safe environment.
Before listing the sizes, note that 19mm is the typical hex size for factory Crosstrek lug nuts.
In practice, start with a 19mm socket and ensure a clean, precise fit. Do not use a socket that feels loose or binds on the lug nut.
Torque and safe installation
Correct torque keeps the wheel securely attached and avoids damage to studs or wheels. The Crosstrek typically requires a torque around the 80–90 ft-lb (108–122 Nm) range, but always verify for your specific year and wheel type.
- Torque target: approximately 80–90 ft-lb (108–122 Nm). Confirm your exact figure in the owner's manual or service bulletin for your year and wheel type.
- Use a criss-cross/star tightening pattern to seat the wheel evenly.
- After installing the wheel, re-check torque after a short period or after the first 50–100 miles to account for settling.
With the right socket and the correct torque, your Crosstrek wheels should remain secure under normal driving conditions. If you encounter persistent nut loosening, inspect the wheel studs and lug nuts for damage or wear.
Additional notes by model year and wheel type
Where to check details
Subaru Crosstrek wheel and lug-nut configurations have evolved over model years and with different wheel options. If your Crosstrek uses aftermarket wheels or a non-standard lug-nut style, verify the exact hex size and thread pitch from the wheel supplier or the vehicle’s service manual. Some wheels may require special tools or sockets shaped to match the lug-nut profile.
To ensure accuracy for your specific vehicle, always cross-check the owner's manual, the wheel manufacturer’s documentation, or a Subaru service bulletin for your model year and trim.
Summary
For most Subaru Crosstrek models, the lug nuts are tightened with a 19mm socket, and the typical torque target is about 80–90 ft-lb (108–122 Nm). Always verify for your exact year, trim, and wheel type, and follow a star pattern when tightening. Regular checks after wheel changes help ensure long-term safety.