What size are Acura lug nuts?
There isn't a single lug nut size that covers every Acura model. Most modern Acuras use M12x1.5 threads with a 60-degree conical seat, and OEM lug nuts typically require a 19mm hex, but variations exist by model and wheel configuration.
Across the lineup—from compact sedans to three-row SUVs and performance variants—specs can differ by year, trim, and aftermarket wheel choices. To ensure you install the correct lug nuts, verify the exact size for your vehicle and wheel setup before purchasing replacements.
Common characteristics for modern Acura models
Here's what you’re most likely to encounter on late-model Acuras. These are the typical specs you’ll want to check first.
- Thread size: M12 x 1.5
- Seat type: 60-degree conical seat
- Lug nut type: standard acorn/conical seat nuts used on most wheels
- Hex size (for OEM lug nuts): commonly 19 mm (some wheels or aftermarket nuts may use a different hex size)
Conclusion: These characteristics fit many late-model Acuras, but always verify against your specific vehicle and wheel kit to be sure.
Possible variations to watch for
Wheels and trims can introduce variations. Keep these potential differences in mind when sourcing lug nuts or replacing wheels.
- Hex size may be larger (often 21 mm) for certain wheels or aftermarket lug nuts
- Thread pitch or size may differ on older or specialty models; most modern Acura models use M12x1.5, but exceptions exist
- Seat type varies with wheel design; some wheels use a ball seat or a different conical angle, requiring compatible lug nuts
- Locking lug nuts require a dedicated key; the key size is separate from the standard nut size
Conclusion: If your wheels aren’t OEM or you’re using aftermarket parts, double-check the exact specifications to ensure safety and proper fitment.
How to determine your exact lug nut size
To avoid mismatches, confirm the exact size for your car and wheels before buying replacements. Use these steps to verify your lug nuts.
- Check the owner’s manual or the vehicle’s door placard for lug nut specifications (thread size, seat type, and hex size).
- Inspect the markings on an existing lug nut or wheel to find the thread pitch and seat style.
- Measure the lug nut hex across flats with a ruler or caliper; common OEM sizes are 19 mm; aftermarket options frequently use 21 mm.
- When in doubt, bring a known-good lug nut to a parts store or consult a dealer to confirm exact specs for your model/year and wheel setup.
Conclusion: Using the correct lug nut size is essential for safe wheel mounting and proper torque; if you’re unsure, seek professional confirmation before installing wheels or driving.
Summary
There is no universal Acura lug nut size. Most late-model Acuras use M12x1.5 threads with a 60-degree conical seat and typically a 19mm hex, but exceptions exist depending on model, year, and aftermarket wheels. Always verify the exact specs for your vehicle and wheel configuration to ensure a safe and secure fit.
