What is the bolt pattern on a T100?
The Toyota T100 uses a 6-lug wheel pattern on a 139.7 mm (5.5 inch) bolt circle. In plain terms, six lug holes are arranged on a circle with a diameter of 139.7 mm, matching wheels built for 6x139.7 mm patterns.
This article explains the bolt pattern in detail, how to measure it, and what to consider when buying aftermarket wheels or tires for a T100 from the 1993–1998 era.
Bolt pattern basics
Key specifications you should know about the T100 wheel lug arrangement are listed below.
- Lug count: 6
- Bolt circle diameter: 139.7 mm (5.5 inches)
- Center bore: typically around 78 mm; verify against your exact vehicle year and trim
When shopping for wheels or taking measurements, these are the core parameters to confirm. Different trim levels and production years may converge on the same pattern, but small variations can exist in the hub bore or the internal spacers required for aftermarket wheels.
Year, model, and practical considerations
The T100 was produced in the United States from roughly 1993 to 1998 and shares its wheel pattern with other mid-1990s Toyota pickups and SUVs. In practice, most aftermarket wheels and adapters that fit 6x139.7 mm are compatible across the T100 family, but it's essential to check hub bore size, offset, and lug-nut type for your specific vehicle. If you upgrade wheels, ensure they clear brake components and that the center bore is a proper fit to avoid centering issues.
How to verify your bolt pattern
To confirm your vehicle’s bolt pattern, measure or consult official specs: measure the distance between opposite lug holes across the wheel hub in millimeters (the bolt circle diameter), and/or check the owner’s manual or a service spec sheet for your exact year and trim. A professional alignment or tire shop can also verify quickly using a bolt-pattern gauge.
Center bore and hub-centric considerations
Many Toyota trucks rely on hub-centric wheels for proper centering, which means the wheel's center bore should match the hub bore. If a wheel is not hub-centric, you may need hub-centric rings to ensure a proper fit and avoid vibration. The T100 generally uses a hub bore in the neighborhood of about 78 mm, but you should confirm for your year and trim before purchasing wheels.
Summary
The Toyota T100 uses a 6-lug bolt pattern on a 139.7 mm (5.5 inch) bolt circle, a standard configuration shared with many mid-90s Toyota pickups and 4x4s. When upgrading wheels, always verify lug count, bolt circle diameter, center bore, and offset for your specific year and trim, and consider hub-centric requirements to ensure safe and reliable fitment. With proper verification, you can confidently source compatible wheels, tires, and accessories for your T100.
