How wide is a full size axle?
A typical full-size pickup's axle width (track width) is roughly 60 to 70 inches. The exact number depends on the model, year, and axle location (front vs rear), with front axles often matching or being slightly wider than the rear.
What defines axle width
In automotive terms, axle width is usually expressed as the track width—the distance between the centers of the wheels on opposite sides. This dimension affects tire fitment, steering clearance, and overall stance. It is different from the vehicle’s overall width, which includes wheels, tires, and fenders.
Typical widths for full-size pickups
Below are the commonly observed ranges for the track widths on modern full-size pickups. The numbers reflect factory specs for typical configurations, including standard tires as equipped by manufacturers.
- Front track width: typically around 63–67 inches (160–170 cm).
- Rear track width: typically around 62–66 inches (157–168 cm).
- Overall vehicle width (excluding mirrors): usually around 79–80 inches (201–203 cm), with mirrors adding width.
Note: Wheel offset, backspacing, and tire size can push the outer width beyond the track width; always verify with your vehicle's exact spec when planning wheels or fenders.
Model-year and manufacturer differences
Manufacturers vary by region and generation; small differences of one or two inches in front or rear track widths are common between Ford, GM, Ram, and Toyota, and between older and newer generations. If you're sizing wheels, check the exact spec for your truck's year and trim.
Why axle width matters for aftermarket work
Axle width influences wheel choices, including offset and backspacing, to prevent rubbing during steering or suspension travel. It also affects stability and track width calculations for off-road or widened builds. Always confirm fitment before modifying wheels or suspension.
Summary
In summary, full-size axles typically span about 60 to 70 inches side-to-side, with front axles often slightly wider than rear depending on the model and setup. Exact figures vary by make, model year, and wheel/tire configuration, so consult the vehicle’s official specs or measure the track width on your specific truck for precise numbers.
