* Most likely: 6 on 5.5" (6x139.7mm) This was a very common pattern for Ford trucks of that era.
* Less likely, but possible: There's a small chance it could have a different pattern depending on options and if it's a heavy-duty model.
To find out definitively:
1. Check your existing wheels: The bolt pattern is usually stamped on the back of the wheel.
2. Check your owner's manual: If you have the original manual, it should specify the bolt pattern.
3. Look at the hub: The lug bolt pattern is visible on the wheel hub itself.
4. Check your VIN: While not directly giving the bolt pattern, your VIN can help determine the axle type and configuration, which can then be used to look up the pattern online or through a parts catalog.
Using a reliable online parts catalog (like those from Ford or aftermarket parts suppliers) and inputting your VIN is the most accurate method to confirm.
