* 5 on 5.5 inches (5x139.7mm): This is the *most likely* bolt pattern for a 1989 F-250.
However, some models or options *might* have used a different pattern, though this is less common. To be absolutely certain, you need to:
1. Check your owner's manual: This is the most reliable source.
2. Look at the wheels themselves: The bolt pattern is visible on the wheel.
3. Check the sticker on the driver's side doorjamb: This often lists tire size information, which can help determine the bolt pattern.
4. Consult a Ford parts website: Using your VIN number will help them identify the correct specifications for your truck.
It's crucial to get the correct bolt pattern for safety reasons. Using the wrong wheels can be very dangerous.
