I just got a set of four Centramatic balancers as a birthday present from my son. He has them on his '08 F-250 and swears by them. I ran a search on the forum but could not find any info that was less than two years old... . I seem to remember reading somewhere that they were not recommended for my truck. I have an '08 Mega 4X4 with stock tires that have almost 27K on them. One of the tires was replaced at 5K by the dealer because it was "out of round" when brand new... ... just wanted some current input before deciding whether or not to install them.