I installed the JLP 3" rear drop shackles on my L when it had 300 miles on the clock.

Ever since, I have noticed that when I would hit "minor" bumps in the road (bridge joints, etc.) while going 45 or faster that the wheel would "bump steer", for lack of a better term.

I have been attributing this to the wide tires and to the fact that it IS a truck.

I had my truck aligned at Ford today and I am happy as can be - the "bump steer" is gone.

Anyone else have a similiar experience? Just curious...