tomm

Firestone Transforce AT.
Pretty sure it's caused by worn shocks.
Never been changed at 75K.
Hear thump thump thump going down road and tires are cupping.
I have a 2 ton jack and stands, will this lift one wheel ok and will a 2 ton stand hold?

I also plan on moving the front cupped tires straight back on the same side rear so they turn the same way, is that good practice?

Thanks for the hand.

madhat

I took cupped tires off my buddies truck, put the front on the back, and did a good burnout with them... no problems.

Not sure if they were really cupped, but the dealer said they were, and it worked for me.

1-2-3

Cupped usually is from bad shocks. I've heard folks say maybe a little slop in wheel bearing can do it to. Rotate, rotate, rotate. Can't rotate tires too much. Especially big ones. It'll get you a lot more life out of them.

tomm

QUOTE:I took cupped tires off my buddies truck, put the front on the back, and did a good burnout with them... no problems.

LOL

1-2-3

I can see that. With all 4 bad shocks rotating them won't fix them. if they are rotated to a spot without a problem, they will tend to wear themselves flat again. Rotating them to another spot with the same problem won't get you anywhere.

FYI- I stuck a tire on the back of an old GMC truck I had a giant motor in and burned it so much the tire melted into the curb and took a chunk of it with it when it rolled off the next day.

roughstock

Yes, good shocks will help,Might also want to look for loose steering or suspension parts in front. and ROTATING the tires often. When rotating, move drive tires straight ahead, and cross the steers to the back or was it the other way, some one will let me know. Or look in owners manual.

pcgym

Yep... cross the fronts to the back and bring the rears forward-

tomm

Do you think my 2 ton jack will be able to lift one corner at a time?

checkster

cant hurt to try it, just dont get underneath with a jack stand and yer good.

AggieJustin

It will lift it, but it won't like it. Definitely put a jack stand under the axle once it's up for safety. And make sure all wheels are blocked so it can't shift.

tomm

Good stuff!
I'll use both stands and chocks and get it off the jack as soon as possible...thanks a bunch!

I'd thought about just using the bottle jack that comes with the truck???

Wicked500R

Most of the times I put my trucks on jackstands, I jack the truck, insert stands where i need them, release jack, and the pump jack slightly to put a slight load on it and keep weight on the stands and jack at the same time. Just a little safety measure.

If your jack is on wheels and your jacking on asphalt, put a piece of plywood under it. The weight of the Mighty Cummins will send the jack wheels through
through the pavement!

If your stands are 2 ton, thats a total of 8,000# capacity. They will hold the front end just fine while you jack the rear pumpkin with the jack for the rotation.

mega-engr

Anyone have the lugnut torque for the steel chrome clad wheels at hand?

pcgym

I torque mine to 120-