The wheel fasteners on a 2018 Honda Accord are lug nuts, not bolts. They use M12×1.5 threads with a 60-degree conical seat, and a 19 mm wrench fits the lug nuts. The pattern is 5 on 114.3 mm (5×114.3).
In practice, this means each wheel is held by five lug nuts arranged in a 5×114.3 mm pattern. The standard torque specification for reinstalling wheel assemblies is around 80 ft-lbs (108 Nm). Be aware that aftermarket wheels or locking lug nuts can alter the nut size or seat type, so always verify your particular setup before installation.
Wheel hardware specifications
Here are the core numbers you need for service or when purchasing replacements:
- Thread size and pitch: M12×1.5
- Lug pattern: 5×114.3 mm (5 on 4.5 inches)
- Seat type: 60-degree conical
- Wrench size: 19 mm
- Number per wheel: five lug nuts
- Torque spec (reinstallation): about 80 ft-lbs (108 Nm)
- Locking lug nuts: may be present on some trims; require the key
These figures cover the factory configuration and common aftermarket replacements; variations can occur with different wheels or locking hardware.
Considerations for aftermarket wheels
Seat and compatibility
When swapping wheels, confirm the seat type matches the lug nuts and the hub bore is compatible. Mismatched seat types can prevent the lug nuts from seating properly, and an improper hub bore can cause vibration or runout.
Always consult the wheel and lug nut manufacturer specifications and, if in doubt, have a professional install and torque check performed.
Summary
The 2018 Honda Accord uses five lug nuts per wheel with M12×1.5 threads and a 60-degree conical seat, in a 5×114.3 mm bolt pattern. Use a 19 mm wrench, and torque to about 80 ft-lbs (108 Nm) when reinstalling wheels. Verify any variations for aftermarket wheels or locking hardware to ensure proper fit and safety.