40" Iroks on 17" beadlocks

[Revivalist]

Well, someone offered me a good price on my tires and wheels so I sold them and picked up a set of 40” Iroks. With the move up in tire size I decided to change to a 17” rim and have them beadlocked. . . .

There’s a local place here in Fresno called Beadlock Specialties that does great work. The owner Clint was very helpful. I went down there and watched them being made. Mounting them was easier than I thought. I couldn’t find a place that would balance them so I bought some of that powder stuff that big rigs use and put that in the tire. I guess it’s supposed to help balance the tire by staying at the part of the tire that weighs the least. . . .

Anyhow, here’s how the truck looks in my driveway now. . .











I like the protection that the thick rock rings give. They basicaly leave just enough room to get a socket in there for the lugs . . .





I pulled out the old ramp to see what clearance issues I might have . . .











In the rear, it looks like I just need to clearance the fender flare a little bit and trim the wrap-around on the rear bumper. It will probably need to be cut shorter and plated again . . .

[Revivalist]

Next, I flexed the rear . . .








On full compression in the front, it looks like all I have to do is trim the ARB bumper a little more. There’s also a little bracket comming down that needs to be cut off. (I think it’s the mount for the stock bumper.) That thing looks like it could pop the tire if I hit it hard enough! . . .





Over all, I could definitely feel the benefit of the bigger tires already. My truck felt much more stable on the ramp. In fact, I think that ramp is too small now. . . . I can’t wait to see what these things can do on the trail! . . .

This weekend hopefully the trac-bar should be in. . . Then I'll feel a little more comfortable about running these tires hopefully without blowing up a 3rd. . .

[mitchg]

nice rig , you've got some serious dough...

[KStacoma]

SHiiiet and you were breaking rear shafts before

I like your truck though!

[91advrunner]

Are you missing a U bolt right next to front diff houseing on the pass side or is it a diamond thing?

[Revivalist]

Wow, I'm suprised you could see that from those pics . . .

Yes, there is a U-bolt missing, but that's because there is a metal piece welded to the housing that is drilled and tapped so the bolt goes right into it. I don't think it's necessarily a Diamond thing. . . . I think Inchworm sets them up that way after discovering that trying to a get a U-bolt that close to the 3rd member wasn't working. It was crooked. So that was the best solution. But I think there are other Diamond axles that didnt' need that. . . .

[Flatlandercj7]

Looks good. Poor rear axle.

[Revivalist]

Could I do some sort of gusseting to strengthen the rear axle housing? . . . I don't want to have to dump any cash on a new rear axle right now. . .

[Texan1983]

how well did you get those to balance? what stuff did you use? anyone use centramatics (i think thats what they are called... basicly bolt on rings that goin between the wheel and brake rotor.)

[mitchg]

Gusseting will help the strength of the axle housing but not the shaft.... I'd say the R&P will be the first to go... if you get some good wheel speed then catch really good traction,

[tmorgan4]

One of the best looking Tacomas I've ever seen.

Are you going to have to relocate or modify anything on your air bumps?

[Revivalist]

Originally Posted by Texan1983

how well did you get those to balance? what stuff did you use? anyone use centramatics (i think thats what they are called... basicly bolt on rings that goin between the wheel and brake rotor.)

They seem ok. Around 45mph they get noisy (mainly cuz of the big lugs). Around 60-70MPH I notice more vibration. But it's not too bad. I expected that would happen changing from 37" radial Goodyears on normal rims to 40" bias-ply Iroks on beadlocks.

For balancing I bought some powder at a tire shop that they use for big rig trucks. You just pour it in the tire before you mount it. I guess it's supposed to help when the tire is spinning fast. The powder supposedly goes to the lightest part of the wheel and compensates like a weight would do. . .

Originally Posted by mitchg

Gusseting will help the strength of the axle housing but not the shaft.... I'd say the R&P will be the first to go... if you get some good wheel speed then catch really good traction,

Well, I'm gonna put some chromoly shafts in the rear as soon as Marlin gets them in. Next weekend we're also gonna setup a trac-bar. Hopefully that should help preserve the r&p by reducing the axle wrap with bigger, stickier tires.

Originally Posted by tmorgan4

One of the best looking Tacomas I've ever seen.

Are you going to have to relocate or modify anything on your air bumps?

Thanks for the compliment! . . .

Why would the airbumps be affected by the bigger wheels?

[tmorgan4]

I was mainly thinking that the air bumps would maybe need to be adjusted since the new tires are bigger could contact the fender. Doesn't appear to be a problem from your pictures though.

[Revivalist]

Oh, I see. . . . Actually, I just need to do a little trimming and I should be all set. . .

I like the fact that the airbumps are soft enough to compress fully when I climb a rock (so it doesn't limit up-travel) and yet they're stiff enough to absorb most impacts without buttoming out. I found that 350PSI worked perfect to get that balance. . .

The only problem is that because of their length of 4", they usually come in contact with the bump-pad very easily. I've thought about shortening them to 3" (which can be done with a little internal spacer installed) but then I would have to crank them up to about 460PSI to get the same absorption capability with a 3" stroke that they currently have with a 4" stroke. That would make them a lot more stiff and hurt the ride quality . . .

I guess it's all a "give and take". . .

[tmorgan4]

What's the problem with the air bump hitting the axle early...noise? I was curious if they'd be noisy in a setup like that since it's metal on metal.

[badmoonrising]

how tall is your rig out of curiosity? ground to frame ect?

[Revivalist]

Originally Posted by tmorgan4

What's the problem with the air bump hitting the axle early...noise? I was curious if they'd be noisy in a setup like that since it's metal on metal.

Noise and a small "thud" under our feet all the time. My wife says "It sounds like your truck is falling apart." One time I stopped, got her out of the truck, and showed he what is making the noise so she wouldn't keep saying that. . . .

Anyhow, I think it would be nice if the airbumps only made contact when the truck drops off ledges and rocks on the trail, not when I'm going over a speedbump in front of Vons.

Originally Posted by badmoonrising

how tall is your rig out of curiosity? ground to frame ect?

The front is about 29". The rear is about 30". I measured my neighbor's stock 04 double-cab and his fame is at 16". Since mine is at 29", that's a difference of 13.5". But his tires are 31" and mine are 39". So the difference in tire radius is about 4". That means I have about a 9" lift. . . .

[tmorgan4]

Damn, I don't like hearing that they make tons of noise. Has anyone tried "padding" the bump pad or found a way to quiet them down? I was planning on sitting almost on the air bumps at ride height but don't want to if this is going to happen. Thanks for the help!

[Revivalist]

Originally Posted by tmorgan4

Damn, I don't like hearing that they make tons of noise. Has anyone tried "padding" the bump pad or found a way to quiet them down? I was planning on sitting almost on the air bumps at ride height but don't want to if this is going to happen. Thanks for the help!

No, don't worry. It doesn't make "tons of noise." But it IS something that you can notice if you pay attention.

Yes, there is a way to decrease the "thud." I mounted some bumpstop pads on the pedestals that the bumpstops hit. That definitely helped. So unless you have a picky wife, it probably won't even be an issue.

Here's some pics where you can see the pad. . .

[tmorgan4]

That's exactly what I'm looking to do. Pimp ride and thanks for all the info.

[Revivalist]

Thanks man. . . Let me know if you ever have any other questions that I could possibly help with.

By the way, the pad bumpstops I used are these:

http://store.summitracing.com/partde...5&autoview=sku

[badmoonrising]

Originally Posted by Revivalist

Noise and a small "thud" under our feet all the time. My wife says "It sounds like your truck is falling apart." One time I stopped, got her out of the truck, and showed he what is making the noise so she wouldn't keep saying that. . . .

Anyhow, I think it would be nice if the airbumps only made contact when the truck drops off ledges and rocks on the trail, not when I'm going over a speedbump in front of Vons.

The front is about 29". The rear is about 30". I measured my neighbor's stock 04 double-cab and his fame is at 16". Since mine is at 29", that's a difference of 13.5". But his tires are 31" and mine are 39". So the difference in tire radius is about 4". That means I have about a 9" lift. . . .

have you thought about pulling a couple leafs and trying to get alittle better COG, or are you content with what its at now?

[archer1965]

that is one sic D-Cab

[Revivalist]

Yeah, I think I'm best off leaving it as is . . . I had a softer spring pack before and it made for a very poor off-road handling: lots of body roll on side hills, the end dives when I hit the brakes, and overall less control. . . . Plus, then I'm just sitting on the airbumps and they basically become the weight supports rather than shock absorbers. . .

[AzRat]

Damn, wheel that thing will ya! We need to see some action shots. Nice rig man.