F-150 XLT vibration at speed

[BigN8]

So I figure there has to be some other dudes on here that own a Ford F-150 and maybe have experienced this. This just started about 2 Months ago. When I get my truck (2020 F-150 XLT Supercrew 4x4) up to 70-80 mph I get a vibration in the seats that is crazy. I can see the passenger seat vibrating back and forth. It's not in the steering wheel. I'm having the tires balanced tomorrow, but from what I have watched and read online this will not solve the problem. Anyone else on here have this happen?

 

[CarolinaJet]

So I figure there has to be some other dudes on here that own a Ford F-150 and maybe have experienced this. This just started about 2 Months ago. When I get my truck (2020 F-150 XLT Supercrew 4x4) up to 70-80 mph I get a vibration in the seats that is crazy. I can see the passenger seat vibrating back and forth. It's not in the steering wheel. I'm having the tires balanced tomorrow, but from what I have watched and read online this will not solve the problem. Anyone else on here have this happen?

yes my 2018 did that after getting new tires. 78 mph is where it peaked, could also feel it at 45ish but much less strong. Exactly as you described. Not in the wheel, shaking passenger seat rattling the zippers on my laptop bag. I went back to discount tire three times for remounting and rebalancing and they eventually replaced one tire, they had it isolated to the right rear. It’s greatly reduced now but still does it just a bit. If yours just started one day my first guess would be it threw off the wheel weights.

 

[Ramblin Wreck]

Let me guess Goodyear tires? My factory Goodyears have never balanced and most I’ve seen on other F150s wear unevenly as well.

 

[TimW451]

Aren’t the massaging seat an expensive option only available in the higher trims? Sounds like you’re getting a deal.

 

[zipper]

How many miles?

 

[2kwik4u]

$5 says it's the tires.

My Sierra had the dreaded "Chevy Shake" that is often talked about online. I tried probably 5-10 different things to get it remedied. Ended up spending a half day at the local Big-O tire shop with an experienced tech and a Hunter 6000 road force balance machine. He was able to get the wheel/tire combo from ~50-65lbf of imbalance to down within ~10-12lbf of imbalance. 2 of the 4 had to be dismounted and "clocked" on the wheel to get them both round and closer to static balance. Once he get them well balanced, we placed the two highest force imbalance on the SAME SIDE of the truck. The idea being that you don't them to be on opposite corners, or on the same axle as that will lead to a "twisting force" on the chassis that could potentially amplify the effects.

Once all that was done (Like $250 in labor/parts) the truck rode as smooth as butter. Ever since I've taken every vehicle and every set of tires to that same guy, and asked for the same process. It's expensive and time consuming, but my vehicles don't shake anymore........Even had them do the same thing to the new radials I put on the boat trailer last year. Worth the cash for the smoothness IMO.

 

[BigN8]

I’m at the shop now waiting on a balance and rotate. If this doesn’t fix it I’m taking it to Ford. Only 34k miles on this truck. OEM tires.

 

[HangOutdoors]

So I figure there has to be some other dudes on here that own a Ford F-150 and maybe have experienced this. This just started about 2 Months ago. When I get my truck (2020 F-150 XLT Supercrew 4x4) up to 70-80 mph I get a vibration in the seats that is crazy. I can see the passenger seat vibrating back and forth. It's not in the steering wheel. I'm having the tires balanced tomorrow, but from what I have watched and read online this will not solve the problem. Anyone else on here have this happen?

Had it happen to my 2017 Ford F-150. Goodyear Tires. They wore a bit uneven after 1.5 years. Took it back to the dealer, bitched a fit, they put 4 new tires on it and balanced. Road smooth as butter till I turned it in in 2020.

 

[AmesJainchill]

the local Big-O tire shop with an experienced tech and a Hunter 6000 road force balance machine.

Can't say i've been lucky enough (yet) to experience a shake in my F150 (either the 2018 or now 2021) and i usually am between 70-80 when on the freeway not towing. Don't think i've towed at 70 though, usually 55-65 and only then rarely. Sounds like Big-O has a nice solution for balancing though!

Side note - I dunno why, but the first thing I thought of when I read this was the "Hewlett-Packard 5710-A dual-column gas chromatograph with flame analyzation detectors"..

 

[2kwik4u]

Can't say i've been lucky enough (yet) to experience a shake in my F150 (either the 2018 or now 2021) and i usually am between 70-80 when on the freeway not towing. Don't think i've towed at 70 though, usually 55-65 and only then rarely. Sounds like Big-O has a nice solution for balancing though!

Side note - I dunno why, but the first thing I thought of when I read this was the "Hewlett-Packard 5710-A dual-column gas chromatograph with flame analyzation detectors"..
View attachment 181593

You'll love this then

 

[BigN8]

Well, Good news, it was the drivers side rear wheel. The weight had come completely off. The guy said it took a 4oz. weight to balance it out. Got up to 80mph right after and she drives smooth as butter. Sad part is now I don't even realize how fast I'm going. Caught my self at 80mph a couple times and thought I was going much slower. Crazy what a smooth ride makes in sensation.