Here are the most common bolt patterns:
* 16-inch wheels: 5x5.5" or 5x139.7mm
* 17-inch and larger wheels: 5x5.5" or 5x139.7mm
To be absolutely sure, you should check your owner's manual or the sticker on your driver's side doorjamb.
This will tell you the exact bolt pattern for your specific 1998 F-150.