The standard lug nuts on a 2013 Honda Ridgeline are M12 x 1.5 with a 60-degree conical (acorn) seat, and they’re typically removed with a 19 mm socket.
Specifications and what they mean
Factory wheels on the Ridgeline use five lug nuts that thread onto wheel studs with a 12 mm diameter and a 1.5 mm thread pitch. The 60-degree conical seat helps align the wheel and provides proper clamping. The common wrench size for these lug nuts is 19 mm, which fits the majority of stock hardware on this model. If you have aftermarket wheels, there can be variations.
Notes for aftermarket wheels or locking nuts
If your Ridgeline is equipped with aftermarket wheels or locking lug nuts, sizes can differ. Always verify the exact specifications for your wheel and hardware before service, and consult the wheel manufacturer or a Honda dealer if you’re unsure.
Summary: For a typical 2013 Ridgeline, expect lug nuts with a thread size of M12 x 1.5 and a 60-degree conical seat, requiring a 19 mm wrench/socket. Variations may occur with aftermarket wheels or locking nuts.