How to stop 285s rubbing.

What’s up guys. I finally got my lift kit on my truck! Eibach Stage 2 with JBA UCA’s and Icon 1.5 add a leafs in the rear. It rides as good as stock and looks sweet. I love it!

The only issue I’m having is rubbing. I’ve made some plastic cuts, got a cab mount chop which helped, and an alignment and asked that they push the LCA caster all the way forward. They were able to and get me in spec but said just barely and the caster was maxed out. This has gained me enough clearance that I can almost go full lock on the street but it clears by millimeters. If the suspension has any kind of upward flex when turning it still catches plastic. This is a problem as I like to go off-road.

The JBA UCA’s add extra caster from stock so they’ve moved the wheels back in the well plus I have a -11 offset which doesn’t help. I’m trying to see what my options are to fix this.

Option 1: I chop the bottom plastic corner of the wheel well back. I’m not really sure what’s behind here or how easy this would be to do without making it look bad. Pic below of the corner I’m talking about

Option 2: I ditch the JBAs for something with less caster. Suggestions? (I’d rather not I am fond of the red look and they were a bitch to get in place)

Option 3: I crank my adjustable Eibach struts up another inch or so which would reduce caster and bring the wheel forward some. I don’t know if this would help or not.
I’m honestly not sure what the ride height is at currently. I did not adjust them at all. Wanted to let it settle before I messed with the height. They are at whatever lift height they come set at out of the box which I think is around 1.5”.

What are you all’s thoughts? Has anyone run into a similar issue?

 

I would just take a Dremel as it already looks like theres a hole rubbed through on the 3rd picture

 

I hit back some it with a hammer when I was beating on my pitch weld lol. That’s not from the tire.

 

1 & 3 really. 285s shouldn't be an issue with this truck. Did you get an alignment right away? The JBL's should give you an extra degree of freedom to push forward a bit more.

 

trim the plastics and get a cab mount chop, increasing preload will only help it clear at ride height but will still rub over bumps and when articulating Offroad

 

Alignment spec sheet?

 

Trade them in for 33" 255 pizza cutters, and put your mud flaps back on, before you ruin your paint on your rockers...

 

Take a picture of your rear alignment cam position.

 

Hahaha, no.

I forgot to grab a printout but I got this

 

You barely have more caster than stock, so I assume that they’re bullshitting you on your LCAs being maxed out. You want your rear cam bolts facing outboard while the front to be facing inboard for max caster. If that doesn’t help ditch the high caster JBAs. Or just tub and don’t worry about it again

 

What was your lift height and what is the offset of your wheels?

 

The wheels are -10 offset, which doesn't help. Can they bump the caster up to 3.5 to 4? That's what Accutune and JBA recommend.

https://accutuneoffroad.com/article...n4D9V2a4P5gKSa3QxA8-Padk6LA6uTNlhDncRgYeqxe11

 

They didn't give a great alignment. The JBA"s have 3 degrees, plus there is at least 1 to 1.5 or more at the lower arm. What they did was put it in the green at the higher end and think that it was all they could do for an alignment. You want the caster to be in the 3-5 degree range which will put it in the red and outside of the normal range. This will move the wheel more forward with the increase with the LCA. This will also allow the vehicle to track better while driving above 45mph.

If you are dead set on another UCA then the Dobinson Billet arms are the best for it. 2 degrees of caster and adjustable camber so that you can get more caster from the LCA and then fix the camber on top. But you have to have a good alignment place like a toyota 4x4 shop, or you will get a crappy alignment again. The dobinson billet arms has a 5/16" spacer that determines the choice of 2 degrees vs 3 degrees of caster.

Stay away from SPC UCA's.

 

I'm not sure that increased positive caster is doing what you think it's doing.

 

Who? The original poster understands that uca positive caster moves the wheel backwards and lca positive caster moves the wheel forward.

 

Yup, alignment shop didn't do what you asked. Most won't because they think you're full of shit and they know better. Pics of the LCA adjusters to verify.

edit: They're going by factory settings. All bets are off when you lift.

 

I believe I'm sitting at 4 or 4.5 on caster with dirt king uca's revisit the alignment. That should not be that tight to the back.

 

Shouldn’t these be set about the same on both sides?? So you guys are saying I should go back and ask them for more caster outside the recommended specs?

 

I have JBA uca's and have 4.5° of positive caster. I have not done a cab mount chop, and have not cut, smashed or anything in the wheel well. I have no rubbing whatsoever with 275/70/17 tires. Not much less of a tire than the op. I agree with others that say the alignment is not good for your application. I believe that with a proper alignment you will not rub, especially considering you already did the cmc.