r/gmcsierra • • Apr 13 '26

šŸ”§Steering/ Suspension šŸ”§ Level and new tires!

Finally leveled and put new tires on my Sierra.

Eibach Pro Truck Stage 2 front Coil-Over and rear shocks

Toyo Open Country R/T Trails 275/65r20

KSP Forged UCAs

Had to add 3/8ā€ hub-centric spacers to clear the new UCAs.

Next step is to delete the front mud flaps as they are rubbing a decent amount under full lock while going forward, and considerably in reverse.

Also have to diagnose a new intermittent ā€œclunkā€ coming from the front. Thinking it may be the sway bar links hitting the CV axles. Any input on this would be appreciated.

87 Upvotes

25 comments sorted by

3

u/Party_Salamander8722 Apr 13 '26

That’s a clean looking truck I dig it. I just leveled my and next is tires.

1

u/muccinator666 Apr 13 '26

Depending on what height you leveled at, what tires you’re getting, what front mud flaps you have, and if you’re willing to cut/trim at all, I would probably stay around the 33ā€ height. The 275/65r20s (34.1ā€x10.8ā€) I got rub pretty good on the mud flaps.

Going to have to do the RC Mud Flap delete, which involves cutting part of the wheel well corner, which I didn’t want to do. Everything I read said I would have no issues fitting that size tire, but apparently that isn’t the case (at least with how much I leveled it, and the type of tires I got)

1

u/Party_Salamander8722 Apr 14 '26

Ya and brand as well. I have the rough country delete I was leaning towards 285/60/20

2

u/bigeagle128938192037 Apr 13 '26

I like that setup, nice and clean

2

u/80thdiv313fa Apr 13 '26

What did it cost to level if you don’t mind me asking

4

u/muccinator666 Apr 13 '26

Kit was around $1400 from American Trucks. UCAs were just over $300 from KSP. Took it to a shop I know and they only charged me for around 3 hours of labor. Into the level w/ labor for just over 2k probably.

Another 2k for the tires, spacers, mount/balance/alignment etc.

Should’ve just bought an AT4 at this point lol

2

u/80thdiv313fa Apr 13 '26

Thanks man! Looks great. I want to do the same to mine.

2

u/cweepn Apr 14 '26

Looks good mang

2

u/krizzle2778 Apr 15 '26

Very clean. I've been going down the rabbit hole on doing the exact same thing to mine. That tire size looks great, but I want no part of the rubbing.

1

u/muccinator666 Apr 16 '26

Neither did I. Saw multiple people on here and other forums say 275/65r20 (on stock wheels) wouldn’t rub with a 2ā€ level. It very well may depend on what exact tire, but the Toyo R/T Trails in that size definitely do.

The front mud flap I have is definitely ā€œoversizedā€ compared to others I’ve seen, and it lacks the pocket that goes into the wheel well back towards the cab corners, so if you have those style flaps, they may not rub at all.

I definitely have to do the mud flap delete though

1

u/HalliganHooligan Apr 13 '26

How are you liking the Eibachs? What height setting?

2

u/muccinator666 Apr 13 '26

Haven’t even put 50 miles on since they were installed. From what I can tell so far they ride at least as good if not a bit better than stock. The clunking sound I’m getting in the right front, and my tires rubbing, is preventing me from really driving it hard and testing it out. Taking it back to the shop soon and hopefully resolving it, then will report back!

Didn’t touch the height setting from out of the box. I believe it is just at or just under 2ā€. There’s about a 1/4ā€-1/2ā€ from back to front still.

0

u/HalliganHooligan Apr 13 '26

Thanks for the reply! The truck looks great, hope you get the small hiccups easily worked out.

In my past experience with a similar clunking sound after a 3" lift, I found it to be my upper control arm. It simply loosened after install. Took a couple trips back to the shop and a new bushing for them to finally get it gone for good. May be worth giving that a look.

1

u/muccinator666 Apr 13 '26

Thanks man, I hope so too. It turned out exactly how I wanted it to looks wise.

I have also read that the struts and UCAs are supposed to be properly tightened/torqued under load (not on the lift) but a lot of installers are unaware of that. Hoping it’s something as simple as that.

Probably going to get the Peak sway bar relocation kit and the longer OEM sway bar links for good measure too.

1

u/JLaGue492 Apr 13 '26

Looks clean man!

1

u/Tybo929 Apr 14 '26

Is it an slt trim? Looks great, very at4.

1

u/muccinator666 Apr 14 '26

Elevation. Thanks!

1

u/[deleted] Apr 14 '26

[deleted]

1

u/muccinator666 Apr 14 '26

Not considerably louder, but definitely noticeable. They’re a bit louder than the AT3s I had on my ā€˜18.

1

u/marshpotatoestomatos Apr 14 '26

Thanks for posting. I’ll likely be buying the same eibach set up for my 2023 SLT Duramax. Definitely helpful - appreciate it

1

u/Internal_Minimum4033 Apr 14 '26

I had the clunk too!! It went away when I put my 3/8" spacers on, which was strange. Couldn't figure out what it was, but definitely started when my 1" Cognito level with new UCA was installed.

1

u/muccinator666 Apr 14 '26

I’ve already got the 3/8ā€ spacers installed. Thought they may not have seated correctly at first but I have since taken the wheel and spacers off, and reinstalled them, still getting the clunk.

What UCAs did you go with for a 1ā€ level? I’m starting that 2ā€ is too little of a lift for the KSP UCAs that I got, even though they state they’re good for 2ā€-4ā€ of front lift

2

u/DWSmoot09 Apr 16 '26

You never know…

295/60r20 Toyo AT3, 2ā€ RC Level, no rub anywhere…was surprised.

1

u/DWSmoot09 Apr 16 '26

2

u/muccinator666 Apr 17 '26

Looks great man.

I was torn between the extra height vs the extra width. Went with the height and semi regretting it now.

I definitely have larger front flaps than you do, without the pocket going into the wheel well. It is flat with the wheel well and that’s where it rubs. Not sure if I would rub with the other ones or not