Have slight vibration at highway speeds.20 inch perelli tires. Rotated and balanced twice but still not perfect. Tires have balanced out good and road force shows to be in low teens according to stealer. Is this common for truck or are there other things to look at.
My truck is 2008 F150 Lariat, long bed, 6000 miles on clock.

 

Check your ujoints. Hand shake the driveshaft.

 

I put a set of these on my truck and have the same issue. Doesnt do it all the time. I have read on this site that it is common. Some people claim the pirellis are prone to flat spotting even if sittin just overnite. Do a search here, there are several posts addressing vibration or front end shake.

 

I have a 2010 F150 Lariat, same tires, same problem. They have road force balaced all four tires twice....I think it is the tires.