Shocks in....anyone run 285/70r17 on a 1.5" level front?

Got my new coilovers installed today. 5100's/Eibach 2.5 coils/new top mount. The guys at Toytech said on bottom clip these should do 2.5" just like their assembled Eibach ones. Looks like I got 1.5". Which isn't all bad from a longevity standpoint. Did the Toytech diff drop as well and 5100s in the rear. Alignment went well and It rides great! But, w/o getting the 2.5" up front I am a tad concerned about my wheel/tire selection which is slated for Friday morning.

I have FN f(x) Pro 17" 0 offset wheels and was planning on doing Toyo ATIII 285/70r17. The current tires are 255/70r16 and look a bit small anyway. Has anyone run the 285/70r17 on a 1.5" level front? It's about 21" to the fender. I think and hope it'll fit well w/ no or minimal rubbing, but would love some insight.

Thanks!

 

All you can do is bite the bullet and try the 285’s. If they don’t fit right with that amount of lift, put the shock on the second notch. I would go with the p-rated version of that atIII. You won’t feel as big of a power loss.

 

Yeah, I'm tracking with you on that. I'm planning on the C-rated variant to save some weight over the E.

Math then would tell me I'd be pretty close or just under to that 2.5" if I went up to the second clip (after getting 1.5" on the first one)

But... maybe just the 1.5" is a serendipitous gift... to make my suspension, axles, etc. all last longer and not have to go to new UCA!??

 

That wheel/tire setup is gonna look sweet.

Usually on first gens you don’t need to worry about uca’s until your hub/fender Measurement is 23 inches or higher. 22-22.5” is the sweet range for looks, function and not breaking important shit.

 

You might be fine. You'll rub frame a bit, not enough to worry about. When reversing, turning, and hitting a dip (backing out of a driveway) you'll hit the pinch weld but its nothing that can't be addressed with a hammer.

I think the lift expectations for the Eibach coils go out the window when using 5100 shocks. I'd like to see a side by side of the Eibach shock and the 5100, the jump in lift height tells me the notches on Eibach are higher up the body. If you got 1.5" on the first notch I would assume close to 2" will be where the second notch takes you. On a double cab with 5100s the bottom notch is stock and every notch up adds half an inch.

Look up the "How big is yours" thread and see if anybody matches your scenario. Your wheels look to be 8" wide so you won't hit the pinch weld too hard.

https://www.tundras.com/threads/how-big-is-yours-measure-up.46186/

 

And when you get it aligned, ask for as much caster as possible. The truck will handle well, and your tires will be farther from the frame.

 

Thanks @Darkness , that makes some sense that the next clip up would be an additional 1/2” or so.

if the pinch weld is the first point of contact, I’m good with just trying the tires out Friday and then maybe going up a clip on the shock if needed.

Caster maxed out at 1.8* today. Drives great though.

 

Thats pretty good caster, I think the high end of acceptable is 2 degrees and you want to be as close to that as possible. More than that and the truck can feel twitchy when turning at speed.

I think my truck has 2" or less lift up front, hard to know when it hasn't sat stock for 11 years. I fit 285s fine with very minimal rub.

 

Or... looks like BFG makes the K02 in a C rated 265/70r17
That might look just right, not rub, and keep the current shock set up.... yes?

Naw! It's got a V8... 285s it shall be!
And, I like what I hear on the ATIII in rain + snow vs the KO2

 

Hahaha there honestly isn't a big difference visually between those two tire sizes. I often consider dropping to 265/75/16 but it feels weird to go smaller.

 

That's what she said.

 

Yes it is and is something I not ever heard spoken. Maybe they were being nice?

 

And... it’s settling!

I out about 30mi on this morning, w some good curves and hard braking and it looks like I am down to just over 20.5” front measurement. So just over an inch of lift. I’m going to hold off on tires and drive it a week or so and see if it settles more.

now the question is whether to go up to the 2nd or 3rd clip to get the right bump???

It seems each clip raises ~ 1/2” on the 5100 for 4x4 DC...

 

Hmm, this is measuring from the center of the hub to the very bottom of the flares?

 

It is.

 

Linear coils seem to shift load more than stock ones if you are parked on any sort of slope. They might collapse a bit but I doubt more than what they've settled already.

You might want to have alignment done again when you get tires, I wouldn't bother until then. It's a good insurance protect the thousand dollars worth of tires.

 

Thanks @Darkness - I think I will actually get the tires mounted on the wheels (but not the truck) Friday, then schedule a time next week to have my local shop pull the shocks, raise to clip 2 or 3 and then reinstall, put on tires, then align.

 

Please remember that the stock spring rate is 500-550. What are the eibach coils? Maybe 600-650? I can’t recommend putting them on the 3rd clip, because of a potentially harsh ride. I would almost be tempted to put the shocks on the second clip and then add a half inch top plate spacer.

 

Good idea! Maybe just a 1/4” plate on each?

Like these:

 

Just took some careful measurements (hub center to fender)
Fronts: 20 5/8"
Rears: 22 1/8"

So, if the next clip on the 5100s adds 0.6" and the top plate another 0.5" ish or a bit less... I'd gain an inch and keep a decent ride and end up w/ a very slight rake and be able to fit the 285/70s.

Anyone see any holes in the plan?

PS: Thank again to all of you guys for your help and wisdom!! So appreciated!

 

Perhaps look at this option too from wheelers. You can split the difference at 3/8 inch. if the coils are going to be apart, I would consider the longer top studs as well. Don’t want to do things twice or three times.

 

Great idea @revtune , thanks! Those, coupled w/ moving up to the second clip should be just right!

 

Yep, Also the poly spacers in the picture are great. I’ve used the 3/8 inch ones from wheelers and they are super hard material. I would feel more comfortable with the longer top studs with top plates and just in case you happen to use some 1/2 inch top spacers in the future. With that said, I would not use anything thicker then 1/2 Inch when combining with lift coils.

 

Thanks @revtune Thats good to know.

In terms of these springs being ~650lb or so, (more than stock) could I expect that that moving up a notch on the 5100 would increase lift a bit more than that same move w/ the stock spring? Yielding possibly 0.75" instead of 0.5-0.6" ??

 

It very well could. Also looking at the perch settings between the Bilstien and eibach shocks, it looks like the difference is on the very top setting. The space between the 4th and 5th setting is a 1/4 inch on the Bilstien and the Eibach looks to be around 1/2 inch. Without having both shocks in front of me, I would venture to guess the other settings are almost identical. I’m going to email wheelers, because I’m very curious now.

 

I'm also VERY interested to see what you find out. My assumption was that the lowest setting on each shock = stock. Which led me to believe that the addition of the Eibach springs would make mine the same as their pre-assembled Toytec coilover and yield 2.5" of lift. Which, it has not.

I ordered both the 1/4" Toytec and 3/8" Wheelers poly plates to see what seems best/fits and should have it adjusted + aligned Thursday... w/ a tire appointment Friday of next week.

 

I’ll let you know when I hear back from wheelers.

Bilstien 5100.


Eibach.

 

Do you know which coils you got? #650 or #700? From what I remember, toytech recommends the 700 for DC or for AC with aftermarket bumper. When you ordered did you tell them your truck's a DC?

 

Hmmm. I did tell them it was a DC and let them know I had the 5100s already and they said it should be the same as the Eibach set up on the stock clip. I should give them a call back

there only appears to be the one option on their website. Am I missing another option?