Shudders for the first mile +/-?

[gcooke9452]

I love my fully loaded 2016 3.8 AWD Genesis Sedan...its new to me. Still low mileage considering (45K). I notice that when I first get in and drive the car shudders as if there are multiple small bumps in the road. Before I know it the drive is as smooth as it should be. Transmission or Engine?

 

[Andyj]

probably the drive train propeller shaft.

 

[BillZ]

I don't know why you guys all forget the flat-spotting problems that were so prevalent with many of the tires on this car. If the bumpiness is a steady rhythm that disappears after driving a fairly short time, that's almost certainly the problem.

 

[gcooke9452]

I found an entire thread on this subject. Many have changed tires and that did not change a thing. Its in the design of the drive train. Ill search for it again as it was an up to date thread.

 

[gcooke9452]

Here is the link to this tread I mentioned above.

Say Goodbye to the Flat Spotted Tires / Shuttering Theory

Finally got around to getting the car up in the air to do some investigating. With three items on the list, this turned into a two-dayer. Rotate tires, craft a drain line so I don't have to lift the car to change oil (yeah, I did just buy a vacuum pump but it will be quicker this way). The...

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