2020 Classic Track width question

[ramskiffie]

I have a 2020 classic with bisteins set at 2.8. Alignment is good, was checked today. I have stock wheels. My front driver side tire tracks wider then the rear. If i drive in the snow you can see that the front tire is out about an inch. Passenger side i dont notice it, i feel like the rear axle is off center. any ideas what to look for? thanks

 

[kurek]

Front end alignment is performed by adjusting cams at the front and rear of each lower control arm. Those cams have the job of managing caster and camber, but they have a very limited range of motion that's really only engineered to compensate for minor manufacturing irregularities and changes in the weight of the vehicle that might affect rake (therefore caster) or camber a little bit.

Since the upper and lower control arms are different lengths they travel in different arcs. That's fine when they're at full extension parallel to the road because they're also parallel to each other but as they cycle up and down they diverge from parallel and this changes the camber of the wheels. When you lift or lower the truck you put the neutral position of the arms in a different place than they were engineered for and it's necessary to use the alignment cams to compensate for that.

A side effect of this is that the technician performing the alignment may have to make some compromises to get the truck to drive well, which might mean that the left and right wheels can be offset from each otherfore/aft, or one may be further from/closer to the vehicle center line than the other.

This is why lift-specific upper control arms are always advised when raising the front suspension more than about 2 inches, that returns the neutral position of the alignment cams back to center (roughly) and can avoid the need to make compromises when aligning the truck.

 

[GTyankee]

That snow print tells the story

but, i think you need to drive in fresh snow, just deep enough to leave tracks

I have done the same thing on raked hard backed dirt

pull onto snow/dirt with the front tires pointed straight ahead
then drive straight ahead until the rear tires drive over the front tire marks.

Measure both front tire marks widths
Then measure where the rear tire tracks ran over the front tire tracks

if the second measurements are wider then the first measurements

something is out of wack & your rear tires will wear a lot faster then the front


Have you ever driven behind a car or pickup that is crab walking down the road, you know that is was in a wreck & fixed incorrectly

 

[ramskiffie]

yea i drove in fresh snow just deep enough for tracks, front tire about 1 inch further out then rear. it must be the bilsteins, 2.8 inches is quite a bit

 

[Quick_Shifter]

I have a 2020 classic with bisteins set at 2.8. Alignment is good, was checked today. I have stock wheels. My front driver side tire tracks wider then the rear. If i drive in the snow you can see that the front tire is out about an inch. Passenger side i dont notice it, i feel like the rear axle is off center. any ideas what to look for? thanks

They may have just did a toe and go. Alignment is also lining up the rear wheels. So adjusting the front to get in spec while neglecting the rear is not the correct way.

 

[ramskiffie]

The alignment sheet says the ****** angle is within spec, at 0.04

 

[ramskiffie]

not sure why that is stared out, t h r u s t angle

 

[Wild one]

The front track width is wider then the rear track width by a 1/2" on the 2X4's and almost 3/4" on the 4X4's. If your rear axle is offset by a 1/4" which isn't uncommon,you could have the offset you're describing.Get somebody to drive the truck,while you're following it,and see how bad it's dog tracking.An adjustable track/panhard bar,will let you move the diff over slightly and line the tires up a little closer.

 

[GTyankee]

I meant that this was bad for tires, this is an extreme sample



I have seen this too often

Redneck Pickup Truck

Truck driving sideways and he keeps it between the lines. Apparently he was sober but the truck wasn't :)

www.youtube.com