Low speed vibration

I'm hoping to get some insight from the community on a recent vibration in my 2020 TRD OR.

I've been experiencing a very mild vibration (entire truck) that seems to occur during deceleration at the speeds of 20-23mph. It occurs whether I'm applying the brakes or not and there is no vibration/pulsation in the brake pedal. It's a manual so I've also put into neutral, and it still occurs. There is no associated noise/grinding. I also tried driving in 4WD and the vibration still exist (no worse/better).

The truck is lifted 2.5" and drives true so alignment seems relatively good (aligned approximately 2,000 miles ago). I have replaced the needle bearing with bushing. I have BFG KO2s (~2,000 miles). Tire pressure all around is 30psi (a little low, I know but increases when tires warm up).

The vibration seems to have developed recently. Temperatures have been in the 10-30F. I feel the vibration lessens/resolves after driving for a while which I associated with increased heat in the tires/increased PSI; but, not entirely sure.

I know it's a truck and not a Cadillac. I don't recall this happening last winter; however, the truck was on stock tires and suspension then as well.

Any insight would be appreciated!

 

What lift?

 

FOX 2.5 Reservoir (without DSC) front and rear, SPC UCA, and Icon AAL.

 

You answered your question. It's the combo, of cold temps and tire pressure.

 

Seems reasonable. Just figured I'd get the braintrust to weigh in on similar experiences!

 

The cold weather/Temps bring on sorts of noises/feels. Highs here this week in single digits, low in negatives. I expect that shnit.