Tire Cupping

[Superduty]

I have read many posts over the years of tire cupping on the Ford Super Dutys. I have a 99 F350 with 7.3. One alignment shop I spoke with thinks it is the heavy engine which is a factor. They recommended rotating tires more often.

 

[wanderer-rrorc]

Typical Ford Twin Traction Beam front tire wear.

Change shocks..have them do 1/8in toe in. -5 camber and it recenters better and less tire wear..ford passenger side camber is actually less than driver side by the book..

Rotate rotate rotate..they just eat tires..

Sent from my VS987 using Tapatalk

 

[rex_1_mn]

Those are coopers right? That’s what I had on my van before the joint kit and they were doing to same thing pretty bad. Tire guy said that tread design does that if not rotated every 5k.

With solid axle front and KO 2’s I haven’t seen that at all

 

[luthj]

Worn out shocks can cause cupping, especially on high vehicles. A stiffer sway bar can sometimes reduce the body roll which can contribute to cupping with under damped shocks.

 

[Mwilliamshs]

A Ford Twin I Beam (2wd) or Twin Traction Beam (4wd) frontend's only uncorrected tire wear issue is camber change throughout its travel. It's a matter of spring rate mostly. My F350 wears the outer edge when empty and the inner edge when loaded heavily. It's a truck that moves 20,000 lbs of whatever I want with ease. A compromise in ride vs load hauling is understandable. My E-150 has the same style suspension and exhibits the same limitation in adaptability to loads varying by 2,000 lbs day to day. I use closed-shoulder tires on both vehicles and am very pleased with the highly durable, low-maintenance suspensions. Beats the heck out of worn ball joints and idler arms every year. Cooper Discoverer HT3s are ideal for Fords IMHO.

Cupping is an unrelated issue and comes down to tire balance and shock absorbers. The tire is skipping down the road. Think about that.

 

[GRTvan]

Thanks again for all the replies. Here is the game plan. Find out the part supplier for the ball joints and see if they are the problem. Double check the steering linkages, think there may be an inner tie rod that has not gotten changed with everything else. Then have the front end aligned. In the mean time, double check to see what bilstein shocks I installed.