Thumping noise in front of car that just started up out of nowhere but no vibration, however I can feel it in the floorboard

I would also swap the front tires around. Usually when a wheel bearing fails, it makes a roaring sound instead of a vibration.

It very well could be the strut.
smaller chance could be the CV axle.
Also have the splash guards/heat shields checked to make sure they are all tight in place.

check your front universal joints and slip joint for wear. wear causes this unit to vibrate when 4X4 engaged

I would have the front wheel bearing adjustment checked first as if they are loose the rotor will be rubbing on the pads and the vibration will be wheel wobbling on the loose bearings Unless you replaced the bearings with new ones then they will fail especially if the adjustment was too tight and too much grease was used.

could be tires need balancing or front end alinement

the right outer tierodending needs replaced.

Yes it can but the dealer would have found it on the test drive if they test drove the vehicle. The only other causes for the vibration I can think of should have been found on inspection as well. Check your bushings and mounts for the sway bar and your tie rod ends as well.

IF IT ONLY THUMPS WHEN YOUR CAR IS MOVING YOU COULD BE WRITE. PAY ATTENTION TO THE THUMPING CLOSLEY, DO YOU FEEL A VIBRATION IN THE STEERING WHEEL, IF SO THE PROBLEM IS IN THE FRONT END. IF YOU FEEL A VIBRATION IN THE DRIVERS SEAT THE PROBLEM IS IH THE REAR END. YES THE VIBRATION FROM THE FRONT STEERING AND THE DRIVERS SEAT IS A WAY TO TELL WHERE THE PROBLEM IS

At what speed do you feel the shake and does it only happen when you apply the brakes?

it started with a low humming noise and got worse it probably our wheel bearing good luck pierre