In the rear, it's a rumble over washboard or undulating surfaces, pot holes and speed humps are fine - sounds like something topping out, however ...

 

New springs, dampers and drop links both sides whilst making the car a much more pleasant place to be ... have not solved the problem.

 

I've had it on ramps and rocked arb, exhaust and all suspension arms, none of which have any play in them, checked the rear seats are locked in place and they're ok

 

I'm stumped, any suggestions?

Check the tailgate bump stops are correctly adjusted....  just the tiniest bit of play in the tailgate shut can give some surprisingly loud knocks and thumps.

Hi B1ackb1rd,  A few Yeti owners have traced a "rumble" to badly adjusted tailgate stops, which allow the tailgate to rattle in the closed position.  It might be worth winding them out a couple of turns to see if it makes any improvement.  Good luck mate - rattles/rumbles are notoriously hard to pinpoint.

I've checked the tailgate which feels quite tight, 16st can't make it rattle - I've had a look at the stops, I've never seen that type before how do you adjust them?

Flip the covers off sideways and it's then obvious.

 

Amazing, 3 or 4 clicks either side and the noise is gone.

 

Thanks to all 

 

Wonderful Worcestershire billiard table roads have hidden the fault, I'm in Dorset on a campsite with home made speed humps and the knocking is driving me mad. 

Wife now thinks the noise is front near side.

I've had a quick look, spring has 3 lines painted (?) wishbone bushes and droplink look newish, but I'll change the droplink again when I get home for an OEM or at least a good quality version.

Offside seems fine, so I think the previous owner liked drains. 

Front nearside droplink changed, noise gone. 

 

Didn't have any perceptible movement even with my sylph-like figure swinging on it - just goes to show, when you have suspension noises these cheap links should be changed first as part of the diagnostic process