The other day I was driving my TownAce and my oldest son was sitting in the left front passenger seat and notice the floor vibrating when I got up to 25 mph and higher and also pointed out the whomp whomp whomp noise coming from the left side and said its possibly the wheel bearing or a tie rod if the alignment is off.
With the whomp whomp whomp noise he was leaning more towards the wheel bearing.
And me... I was leaning towards- "let me post it on TVT" and see what the members come up with