Yesterday it was pouring rain so I decided to try the 4A option on my 16 lariat. There was a noise coming from what sounded like the front driver side wheel area. The only way I can describe the noise would be having a flat spot on a tire thud...thud..thud....and when I slowed down to stop it got louder.

It's only the second time iv used it and I don't remember hearing it. Is this normal? I know I will get some noise from 4A but not sure if it's something I should bring to the dealer. Thank you

 

I have that exact same noise!