When did Ford change to 8x170?
The switch to an 8x170 bolt pattern in Ford’s lineup happened with the 1999 model year, primarily affecting the heavy‑duty F-Series Super Duty trucks. Lighter models like the F-150 did not adopt this pattern. This change established the 8-lug, 170-mm bolt circle as Ford’s standard for its heavy-duty lineup and related vehicles.
Timeline: When Ford switched to 8x170
The shift to the 8x170 lug pattern arrived with the 1999 model-year refresh of Ford’s Super Duty line, which includes the F-250 and F-350. The Ford Excursion, built on the same platform, also adopted the pattern. Since then, Ford’s heavy‑duty family has generally retained the 8x170 bolt pattern across generations, with the pattern applying to related variants such as the F-450/550 in those configurations. Lighter-duty trucks, notably the F-150, continued with different lug patterns.
A quick breakdown of the models affected
The core Ford vehicles that adopted the 8x170 lug pattern as part of the 1999 rollout are listed below. This captures the main lineup and related vehicles sharing the platform.
- Ford F-250 Super Duty (model year 1999 and later)
- Ford F-350 Super Duty (model year 1999 and later)
- Ford Excursion (2000–2005; shares chassis with Super Duty)
- Heavy-duty variants such as the F-450/550 that used the same 8x170 lug pattern
These models form the backbone of Ford's 8x170 adoption, providing a consistent lug pattern across the brand's most capable pickups and related vehicles.
Verification and notes for owners
To confirm the lug pattern on a specific vehicle, check the owner's manual or the door placard, or use the VIN on Ford’s official parts portal. A dealership can also verify the original equipment wheel specification by VIN. While the 8x170 pattern is standard for the modern Super Duty lineup, regional variants or special configurations can occasionally differ.
Summary
Ford shifted to the 8x170 lug pattern with the 1999 model-year introduction of its Super Duty trucks and related vehicles, a standard that has carried through subsequent generations. The F-250/F-350 and related models (including the Excursion in its era and 450/550 variants) adopted 8x170, shaping wheel compatibility for Ford’s heavy‑duty lineup for decades.
What year do Fords have an 8x170 bolt pattern?
The 8x170 bolt pattern is found on Ford F-250, F-350 Super Duty trucks, and some E-Series vans from 1999 to the present. This pattern was introduced in 1999 and continued through the most recent models, while older Ford trucks (like F-250s and F-350s before 1999) have a different bolt pattern, such as 8x6.5.
- Years: 1999-present
- Applicable models: Ford F-250, F-350 Super Duty trucks
- Other applicable models: Select Ford E-Series vans (E-250 and E-350)
When did Ford switch from 8x6.5 to 8x170?
1999
Ford , GM, dodge all had 8x6. 5 bolt pattern from pre 1980 all the way until 1999 and that's when ford changed to 8x170.
What does 8x170 convert to?
Our adapters are designed to adapt your vehicle's 8x170 bolt pattern to a 8x6. 5 pattern. This allows you to run wheels that have a different bolt pattern than your vehicle's stock wheels.
What year to avoid Ford F250 Super Duty?
2008 Ford F-250: This model year has serious brake problems, like sudden brake failure and the dreaded death wobble. 2011 Ford F-250: The death wobble is also an issue in this model, which is known for its transmission issues, like rough and jarring transitions while shifting gears.
