Oscillating Vibration at 57-62 mph

22 Tacoma TRD off Road Falken Wildpeak At4W stock wheels stock suspension.
Currently have a vibration from 57-62 mph specifically. The vibration is oscillating not linear. Ive tried lightly pressing the break when driving and letting off gas completely to rule out torque converter. Ive ran the tires for about 8,000 miles now vibration started around 1,000 miles ago. Have also switched to 4Hi to rule out needle bearing.

 

Probably your tires. My Tacoma did this at 55mph after swapping my stock tires for wild peaks. It went away when I swapped my stock tires back.

Tire shop warrantied out two of the tires for high road force balance. It got better but still there. 50,000 miles later I don't notice it anymore, right in time for new tires.

Does the intensity change when you do a tire rotation?

 

Some thoughts.
How many miles on the truck? I have had this kind of oscillating vibration appear at circa 165,000 miles on a different brand SUV. It turned out to be the rear U joint on the rear drive shaft. The vibration returned circa 170,000 miles. Then it was the front U joint on the rear drive shaft, and also a rusting-out drive shaft. When I was done with the repair, the only OEM part on the drive shaft was the rear yoke.

I can't comment on your specific tires. But shifting tire belts can cause this issue. Shifting tire belts can mean that the tire will come apart before the tread wears out.

 

Tbh i did get my tires rotated mot too long ago but i dont think i noticed it directly after the rotation. Was it really like a pulsing vibration though? I thought tire vibrations were usually a linear vibration

 

currently 57,000 miles. It does feel like a driveline vibration. Its weird. It pulses

 

If it's not tires, which can get out of balance over time and get flatspotted by sitting a day or two, I'd try checking/greasing driveshaft U-joints and checking center bearing. Does it get worse going downhill (under less load)? If it does, I'd be looking at the driveshaft... I assume it's a 4x4 with greasable U joints and a center support bearing.

 

Honestly yea i think ive noticed its worse either up or downhill.

 

Still can be tires based on weight distribution. I'd try to change tire pressures see if it does anything. And I would be checking the driveshaft.
That being said, my old Gen2 did something similar for years. Was worse downhill and when it was cold out (below freezing). I got used to it. I suspect it was u joint wear or center bearing wear.

 

I also do feel like its more prominent in below freezing temps. Jersey has been brutal last couple of weeks

 

Your description is confusing. Do you mean that the amplitude of the vibration oscillates?

 

i guess oscillating is the wrong word here. Idk what its called but it sounds and feels like this

 

that sounds like what I had, I never figured out what it was but suspect the driveshaft csb or/and u joints. Had it like this for about 80K miles and sold the truck that way. Probably will get better when it warms up. I assume zerks are greased regularly? If not, I would grease them at the first opportunity.
I'd check the driveshaft to see if anything is loose or obviously worn/damaged. And see what kind of grease comes out when regreasing zerks. If watery and rusty than it is not good.

From my experience, unless you have a clunk/slop in the joints or a yoke of a DS, nothing should break.

 

Oscillating is the right word if you are referring to the amplitude/loudness of the “carrier frequency” in your recording, a la AM radio.

An oscillation in amplitude like that is likely due to the interference of 2 vibrations that are close in frequency. Are you familiar with tuning a guitar using beats? If so, its based on the same idea.

 

Did some searching through here. Mine is a 22’ TRD off road. It seems after 20’ all greasable joints are gone and are sealed