2007 Fit Sport. Had a vibrant that felt like a possible bent rim or tire out of round at certain speeds.. Arond 20 to 25 mph and around 40 mph. Also kind if sounded like a train chugging.
What I did (needed it anyway, 114,000 miles) to no avail.
Installed new tires.
All new wheel bearings. (oem)
All new tires.
​All new shocks.(oem)
New rotors and pads (oem)
New outer drive shafts (oem)
All this and still felt like a basket ball going down the road. These things did help with road noise as they were all worn out for the most part. The last thing I did was change the intermediate shaft. This ultimately was the issue on this particular vehicle. You couldn't tell by feeling with your hand that it was wore out.
I did all this because I like the car, especially the payments. I plan on keeping it a good while longer. Hope this helps.
P.S.
I would use ONLY OEM drive shafts. Been down the aftermarket road with those. Got a lot of slop in them in a short period of time. If you plan on keeping your car I wouldn't use them. Lesson learned.

 

The tie rods on mine recently needed replacing which was causing vibrations.

 

Mine are good at the moment as well as the ball joints. They're probably next. Have had this Fit since 2017. When this started I took it to a local mechanic who has high praises around here. He told me I was being too picky cause he couldn't find anything wrong with it. Took it to another mechanic where two of them concluded it was the transmission. Nope!
Should have changed the intermediate shaft when I changed the other axles or at least pulled it and checked it off the car. Again, lesson learned. Oh well, it is what it is. It's done.