[12BlackRam]

Back in May I had the Rough Country 2.5"/1.75" lift level installed on my truck. 2012 Crew Cab 4x4 w/ 305/55 R20 Mickey Thompson Baja MTZ. I'm very happy with the ride and stance of the truck since the install.

Anyway....here is the question.

I have put right around 4,000 miles on the truck since the work was done. I have noticed that my front tires are starting to cup. Any suggestions or ideas. An alignment was done at the time of install. I haven't had time to dig into this problem, yet. But I was wondering opinions on what to look for....Alignment, toe? Tire pressure? Ball joint?

The tires are load range E and I am running 35psi? What pressure are you guys running? Did you stay with factory pressure or increase when you change the tires to load range E?

It could be an alignment issue, but if the toe has changed isn't that related to a suspension issue?

I know some others have reported ball joint issues, but it was my impression that 2012's and up weren't having the issues.

Shoot me back some ideas.....

Thanks!

 

[brandonjansen]

Start with tire pressure as that's the easiest to check. 35 psi is a little on the low side IMO. I'd be running them at 40-45 psi. However I don't think that's the reason they'd be cupping. That's most likely an alignment issue. Did you get a print out showing the specs after they did the alignment? I'd bring it back there and ask them to check it. Some places will at least check the alignment for free. It's worth a shot asking if they can.

 

[blueiceRAM]

Load range E cold psi is 80! You will get some serious cupping at 35. I run lre tires on all my trucks and never go under 55-60. Your fuel mileage is taking a hit too with that low of pressure. It will ride rougher with the more air but that's the price you pay with heavy load aggressive tires

 

[brandonjansen]

Load range E cold psi is 80! You will get some serious cupping at 35. I run lre tires on all my trucks and never go under 55-60. Your fuel mileage is taking a hit too with that low of pressure. It will ride rougher with the more air but that's the price you pay with heavy load aggressive tires

80 psi is to achieve the max load rating for the tires. You don't want to be running them that high unloaded or you will get uneven wear as well.

Really want you want to do is take a laser temp gun and measure the heat across the tire when you pull off the road. You want it fairly even across the whole tire with the middle being slightly warmer. If you adjust the pressure to achieve that you will be a pretty much the optimum psi and have even wear across the tire.

 

[MisterGDRam]

I am running 42 psi on my factory tires 275/60/20
In my old truck with nitto terra grraplers i was running them with 45 psi.
On your tures should be around 50-55 psi.maybe even little more.

 

[agingtech]

I run 50 psi in my bfg's load range E and it rides great.
wheel alignment will not cause cupping of the tires....ever!
worn suspension, unbalanced tires will

 

[HighSierra]

So the recommended pressure on the sticker is incorrect?

 

[Otterdriver]

I run 36 psi on Michelin ltx at2's, (E) range, sometimes they decrease to 32 on cold days, perfect wear after 30 000 miles, I rotate them front to back, back to front every 6300 miles (10 000)km oil change, have your alignment checked. I think the alignment is key, my door sticker indicated 40 psi for the original SRA's I changed out.

 

[pdurr1]

Leveling Kit issues

If you had the front end alignment done they probably didn't adjust the camber/caster. Had the same issues with cupping and found out the hard way. Had the adjustment made and new tires and no issues since then. I'm running E class 275/65/20 BFG's and they are great! Good luck

 

[LowUFO]

If both front tires are starting to cup on the outside, then given the fact you've lifted the front of the truck, I'd agree this is an alignment issue. And not to say I think this has anything to do w the cupping issue, but I also agree you should be up around 45psi. Why not take the fuel savings another 10psi will give you.