Prostar bouncing/shaking when empty

[SquareOne]

Yep, like Chamber said....my steers were smooth up until the 60-70k mark when one began to showed the it's issue. Started very slight, but it began nonetheless and only progressively got worse. Currently with just over 125k on them, they have their good and bad moments on the highway.... similar to what you're dealing with now.

---while you're at it, throw a pair of shocks on with the new steers as well. Cheap insurance to keep the wheels meeting the road when you put new rubber.