tires started humming..

so i got some new TA KO2 285,75,17 on my truck with a 3 inch OME lift. The ride home from the shop was smooth and quiet...now 3 days later they are humming like an airplane. Is this normal?

 

I only have 265s but mine run quiet

 

Photos of the 275 75 17?

 

check pressures and look for rub marks on cmc, liner, uca, etc... those are big tires if you haven't cut and cleared the wheel well.

 

Good for them. Never live to see the days when tires get more humming than me.

On the serious note, I have 265 KO2 in stock size, rotated every 5k. The humming starts around 35k in. I still have 5/32 on the treads. When they were new you can’t tell if it was AT tires. Super quiet.

 

no fender rubbing.. it is touching the UCAs only when the wheel is turned all the way hard over. 0 offset wheels will be on by Wednesday this week so that should take care of UCA issue. I've only had it hard over ONCE since I had the tires put on because the rubbing was so obvious and excessive. Could that have thrown off alignment or balance?

 

its an undulating hum. sounds like "zum-zum-zum.." that speeds up relative to how fast im going.

 

It's possible your springs are settling on the lift and it could change your alignment numbers, it's wise to get another one after settling is finished anyways.

 

Almost sound like the infamous needle bearing
Does the sound go away in 4wheel?
https://www.tacomaworld.com/threads...differential-bearing-vibration-thread.152173/

 

This is true too ^^^

 

Definitely could be the needle bearing. When did you add the lift? Did you do the needle bearing at the same time?

And as they said, key diagnostic, does it go away in 4x4?

 

Wow. Goes away in 4x4. I guess I'll do the ECGS clamshell bushing. From what I'm reading, it seems like only the drivers side needs replaced..?

 

Yes

 

There is no needle bearing on the passenger side from what I've read