‘Extended Thread lug nuts are required to install spacers on the front hubs, giving more thread engagement on the relatively short factory studs.
Recommended for all size, front or rear wheel spacers. Required for 1.5″ wheel spacers on the front wheels.
12MM Nuts are used for Pick-ups, Tacomas, 4Runners, FJ Cruisers, and 2000-2006 Tundra.
14mm Nuts are used on 2007+ Tundra