Torsen Diff

[TwizzleStix]

With no load or towing, set the fronts to 34 and rears to 32 COLD pressure. That means in the morning after sitting all night and before the sun hits the tires at all. As soon as you drive off, the pressures will rise to 36/34.
The shocks are the least likely issue for a rough ride on the street. Tires/pressures are #1, UNLESS the original owner swapped springs to the infamous deavers or other aftermarket brand.

FYI, I have ~64k miles on my 2018 still on original BFG. I have a new set still waiting to go on, but the “ride” is still oem new. The tires make quite a bit of noise now, but way less than any off-road tire. They are worn flat across the tread with the minor inside cupping causing the noise. They are dead silent for the first ~30k miles. YMMV

 

[Frank N]

Here the service interval for the shocks from Fox for 100% street...

All conditions here -> https://www.ridefox.com/service.php?m=truck

 

[Guaso2015]

Last night I put 38 in all four, according to what it says in my door, but there’s no difference, I’ll try that 36/34. It is not vibration like the one you get with unbalanced tires, it’s just that it doesn’t fell “smooth”. I inspected the undercarriage (at the dealer, of course lol) and there is no scratches or signs of off roading. I’ll get the tires balanced and an alignment just to be sure. Than you guys

 

[K223]

Damn Miami streets! Palmetto sucks lol. Yeah as mentioned get those tires at least down to 36/34 cold. A little softer on the pressure and it will handle road bumps even easier. Eventually there will be some lateral trade off. But this is not a sport street truck anyway. I find it amazing how even on pressures lower than 36/34 the KO2’s/truck still handle very well on the road.

I think your balance issue if you have one will only be felt at highway speeds 65+ or maybe slightly slower. I wonder if you just have a bad tire period. Hope you can make progress.

BTW running 38+ pressure on the street will certainly eat up the centers of the rear tires. No weight in back unless you run loaded a lot. The tires grow at highway speeds.

 

[Sebastien]

Not sure if you have the same problem has me but when I’m in 4W Auto and accelerating the car jerks slightly , no one can tell me what the problem is . It Only started doing it after 24000 miles and seems to be getting worse . Doesn’t do it in 4Wh or Lo

 

[Sebastien]

i get jerking on acceleration when 4W Auto is selected and only stated doing it after 25000miles

 

[Nex]

From a stop or while driving? I ask because it could be the auto start/stop BS. I get the same type of thing if the wife's Range Rover. It has been turned off un the Raptor.

 

[K223]

Not sure if you have the same problem has me but when I’m in 4W Auto and accelerating the car jerks slightly , no one can tell me what the problem is . It Only started doing it after 24000 miles and seems to be getting worse . Doesn’t do it in 4Wh or Lo

Under acceleration in 4A the truck is surging on and off? Does it let up? No problem in 2WD? I wonder if the IWE is disengaging and reengaging? Meaning your problem may be in the IWE.