CarGuy87 wrote: ↑Thu Jan 24, 2019 2:37 pm
Given that you have done the basics like thoroughly checking it visually, I would do what I have done in the past to troubleshoot vibrations which is to rotate your tires front to back. This will narrow down if it's a tire issue or suspension/steering and you can go from there. Let us know what happened so others can benefit from your findings.
I agree with CarGuy! After checking steering/suspension components, I would re-balance the left front tire so that when it is on the rear (after rotation) you can rule out a tire balance / wheel issue, (should the problem follow the tire).
That is a moot point however, because while it is being re-balanced, the tech should tell you if they suspect a bent wheel. Seems to me Mavis is good for crying "bent wheel" when balance problems / complaints arise.
Whoever you bring it too, steering / suspension must be checked.
If you go back to Mavis, I would insist they re-balance the left front tire on their dime, if all checks out, since I think they have a warranty on balancing, (I believe for 90 days...but I could be confusing that with an alignment warranty...you will need to confirm that I am correct).
Again, as CarGuy points out, checking steering/suspension components is the priority in diagnosing the issue. Many things can cause the issue you are experiencing!
Make sure your lug nuts are all in place, and none are missing / loose. You cannot rule out anything until thoroughly checked!