2019 XE- S- AWD
Car has 21000 miles on it and two 4 wheel alignments and it still vibrates above 60 MPH..
Placed 4 new tires on the car, had them checked on a high speed balancing machine, both alignments done at a Jaguar dealer and still the car has a tendency to pull left. Sometimes feels like it has a dead spot when the wheels are straight.
Anyone else have this issue, what else should I be looking for,, the brakes are fine and the dealer says the wheels are not bent. Maybe a dyno run to help isolate the problem, let me know

 

I have an XE Portfolio AWD and have not had any problems like yours at all. However, my MB SLK had a similar leftward tendency, so I had it checked out on a 4-wheel alignment machine. This found slight errors, but when the front wheels were swapped left-right, the tendency became one of a very slight rightward tendency, almost too small to notice in normal driving. Here in England we drive on the left, so road camber tends to make a lot of cars drift left so at the time of purchase I didn't really notice.
I later found a website of a US tyre shop that explained that some tyres, especially cheap Joe Noname tyres from you-know-where, suffer from conicity which means even a perfect alignment doesn't cure the problem. Guess what, the front tyres on the Benz are Joe Noname from you-know-where !! I had been prepared to ditch these for some more reputable makes, but I'm not going to bother now until they get much more wear on them, as they were brand-new when I bought the car.

Unfortunately I can't give any input on the vibration over 60 mph. Did you have the car from new ? Also what new tyres did you fit ? Apart from wheels and tyres, the other rotating masses are the prop-shafts to front and rear. If these are out-of-balance or alignment they will also cause vibration. Maybe the car needs a detailed inspection underneath for damage.

 

Vibration - at what speeds above 60mph vibrates, all speeds?

Is it the steering wheel, do you feel it in the seat?

Pulling - have you tried swapping the front tires to see if the pull goes away?

Also - did they give you a spec sheet showing before and after adjustments, can you attach