Hi Guys,
Are the lug stock lug nuts on the later model 5x135mm wheels flat or tapered. I have a guy who can make me a set of adapters to adapt the newer wheels to the older style lightning bolt pattern, but he needs to know if the lugs are flat or tapered.
thanks,
Don

 

Lug nuts on the f150s, assuming the Lightning is the same, are flat bottom 14mm lugs, not the acorn style. That is for anything built 2000 to 2004. 1997 to 1999 are 12mm flat bottom lugs.
Hope that is what you are looking for.