What size socket are Chevy lug nuts?
There isn’t a single universal socket size for Chevy lug nuts. The most common sizes you’ll encounter are 19 mm for many modern passenger cars and 9/16 inch or 13/16 inch hex for trucks and some larger SUVs. Always verify the exact size for your specific model and wheel configuration before loosening or tightening lug nuts.
In practice, Chevy uses different lug-nut sizes depending on the model year and wheel package. Using the wrong size can damage the lug nut or wheel studs, so consult your owner’s manual, inspect the lug nuts themselves for size markings, or contact a dealer for the precise specification for your vehicle.
Common socket sizes by Chevy vehicle family
These are the sizes you’re most likely to encounter on Chevrolets today, though variations exist across generations and aftermarket wheels.
- 19 mm hex: Common on many current Chevrolet passenger cars and crossovers (e.g., Cruze, Malibu, Spark, Sonic, Equinox, Traverse).
- 9/16 inch hex (approximately 14.3 mm): Frequently used on several GM trucks and larger SUVs with certain wheel packages or older lug-nut styles.
- 13/16 inch hex (approximately 20.6 mm): Less common, but seen on some trucks or performance wheel setups.
- 21 mm hex (approximately 0.83 inches): Rare, typically found only on some aftermarket applications or specialty wheels; not a typical factory size for Chevy wheels.
Conclusion: While 19 mm is the most common for many modern Chevrolets, you should confirm the exact size for your specific model and wheel package before performing work on lug nuts.
How to determine your exact lug-nut socket size
To identify the exact size for your Chevy, use these steps:
- Check the owner’s manual or service manual for wheel and lug-nut specifications.
- Look at the lug nuts themselves; stamping on the nut may indicate the size (e.g., “19MM” or similar markings).
- Measure the hex across flats of one lug nut with a caliper or ruler; compare to standard socket sizes (19 mm, 21 mm, 13/16", 9/16", etc.).
- Consult the dealership or the vehicle’s build sheet if you have aftermarket wheels or a special trim package.
If you have aftermarket wheels, the lug-nut size may differ from the OEM specification; use the size that matches your installed lug nuts, not the base factory spec.
Safety and installation tips
Always use a torque wrench to tighten lug nuts to the manufacturer’s specification, clean the lug threads before installation, and tighten in a criss-cross pattern. Avoid over-tightening or under-tightening, which can cause wheel loss or rotor damage.
Summary
Chevy lug-nut socket sizes vary by model and wheel package. The most common size for modern Chevrolet passenger cars is 19 mm, while trucks and some SUVs may require 9/16" or 13/16" hex sockets. Verify the exact size for your vehicle via the owner’s manual, the lug nuts themselves, or your dealer, especially if you have aftermarket wheels. Always follow proper torque specs and safety practices when changing wheels.
Is 7/8 socket the same as 22mm?
A: 22mm = 0.866", which essentialy is a 7/8" socket. A 7/8" socket will work on a 22mm lug nut, but it can feel a little loose. The other way around, a 22mm can work on a 7/8" lug nut, but it can be really snug, which is not bad.
Is a 13/16 socket the same as 21mm?
13/16" or 21mm is a common interchangeable size for wheel bolts / lug nuts and spark plugs on older cars. I prefer to use 13/16" if I can as it fits tighter. 5-sided is also for bolts used on utility or manhole covers. 5 sided is most likely for a water valve or gas valve in a residential setting.
Are Chevy lugs standard or metric?
Nowadays almost all Chevy bolts are metric. Precisely, the most common thread sizes of Chevy lug nuts are M14x1. 5, M12x1.
What size lug nuts are on a Chevy 1500?
M14x1. 5 Lug Nuts - Replacement for 1999-2024 Chevy Silverado 1500, 2015-2019 Colorado, 1999-2019 GMC Sierra Aftermarket Wheel 24pcs Chrome Closed End Bulge Acorn Skinny Lug Nuts.
