[BikePump]

Originally Posted by spiffyjiff

speaking of undertray...stupid question but did you check these / make sure theyre good and snug? last year i was black flagged (at VIR??) twice in a row because of "something dragging under the car". back in the paddock i couldnt see anything amiss under there so i went out again. only after the 2nd time flagged did my dumb brain decide to check more thoroughly - the leading edge of the middle tray had no bolts attached. looked fine and dandy at a glance in paddock but turns out it was bending down and scooping wind at speed.

if you have same issue, might be enough to cause vibration...

Yeah this is one thing I am working on tracking down. The underbody pieces on the car were never in good condition even when i first got the car - and they are far from snug. going to try to remove them all and test as an easy way to track it down.