What size is a Tacoma 6 lug?
The standard 6-lug setup on a Toyota Tacoma uses a 6x139.7 mm bolt pattern (six studs on a circle 139.7 mm in diameter, commonly referred to as 6 on 5.5 inches).
This means wheels, lug nuts and hub assemblies must match that bolt circle and align with the Tacoma's hub bore. Below, we break down the bolt pattern, lug nut sizing and practical tips for compatibility across generations.
Bolt pattern: the key size
The bolt pattern, or PCD (pitch circle diameter), tells you how far the lug studs are from the center and how many there are. For the Tacoma, every generation from the first to the current model uses the same 6x139.7 mm bolt circle, which is roughly 5.5 inches in diameter.
Note: when buying wheels, verify both the bolt circle and the wheel's hub bore fit to avoid clearance or alignment issues. If you use wheels designed for a different hub bore, you may need hub-centric rings or a different spacer approach.
- Bolt pattern: 6 on 139.7 mm (6x139.7 mm, or 6x5.5 inches).
- Generational consistency: Gen 1 through Gen 4 Tacomas maintain the 6x139.7 mm bolt circle.
- Aftermarket considerations: some wheels marketed as "for 6-lug trucks" may not fit Tacoma if they’re not 6x139.7 mm.
In practice, the standard 6x139.7 mm pattern makes wheel shopping straightforward for Tacomas, but always confirm hub bore compatibility and offset with any aftermarket wheel to ensure a proper fit.
Generational consistency
Toyota has kept the 6x139.7 mm bolt circle across the Tacoma's three generations (Gen 1, Gen 2, and Gen 3, with the current Gen 4 continuing the standard). This consistency simplifies wheel upgrades and replacements across model years, as long as other factors such as center bore and brake rotor size are compatible.
Lug nuts and wheel hardware
Beyond the bolt circle, you’ll also need correct lug hardware to secure the wheel to the hub. The common configuration for Tacomas uses standard lug nuts sized to the wheel studs with a typical seating type and socket size.
- Lug thread size: commonly M12x1.5 on Toyota trucks with 6-lug hubs.
- Seat type: most OEM and many aftermarket wheels use a conical (tapered) seat; verify seat type for your wheels.
- Nut socket size: typically around 21 mm (some setups use 19 mm depending on the wheel and nut type).
- Hub-centric rings: may be required if aftermarket wheels have a larger center bore than the Tacoma hub.
Always confirm the exact lug nut size and socket size for your particular model year and wheel installation. Using the wrong lug nut size or seat type can lead to improper seating or damage.
Summary
In short, a Toyota Tacoma’s 6-lug configuration uses a 6x139.7 mm bolt pattern. For wheels and lug hardware, expect M12x1.5 lug threads with a conical seat and a socket size around 21 mm, though exact specifications can vary by year and wheel specification. Always verify wheel bolt pattern, hub bore, offset and lug nut size before purchasing wheels or tires to ensure a proper, safe fit.
