Anyone running 285s or larger on JBA UCA?

[RazzRoach]

where did you guys purchase your jbas?

 

[91324]

where did you guys purchase your jbas?

Just got my JBA high caster UCAs delivered from the JBA website. Was $449 + shipping.


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[snuffleupagus]

Another data point, no rubbing lock to lock on the JBA UCA's. Haven't taken it out and aired down\wheeled it hard yet since throwing them on, but I don't think there will be enough deflection to make contact anywhere.

Wheels: FN Fx Pros - 17x8, 0 offset, 4.5 BS
Tires: Nitto TerraGrappler G2, 285/70/17

 

[Spanky4R]

Another data point, no rubbing lock to lock on the JBA UCA's. Haven't taken it out and aired down\wheeled it hard yet since throwing them on, but I don't think there will be enough deflection to make contact anywhere.

Wheels: FN Fx Pros - 17x8, 0 offset, 4.5 BS
Tires: Nitto TerraGrappler G2, 285/70/17

That's the setup I've been waiting to see. I've got FN Six Shooters & goin with Falken at3w in 285/75r17. Even with the extra height I think I'll clear.

 

[JP421]

Spacers on the trail wheels with 285's will need the fender liner mod and the removal of front mud flap!

Definitely won't need a BMC, especially if you are running the high caster JBA's! Any good alignment tech should be able to keep your caster pretty far + and away from your body mount.

Update on this. I did need a BMC even with caster at 4. In addition to fender liner mod and mudflap removal.

 

[mscot]

I think the front fender mod is a reality for everyone running 285s.
I have the JBAs with wildpeaks (which are a large 285) on 8.5" rims with 4.5 backspace and only a 2" lift. With caster at 4.5 I only get a bit of rub on the mudflats on occasion. I have hacked them up to remove that bulb they have that intrudes on the wheels pace as much as I could. I should remove them but they are handy in CO winters.

No issues with hitting the JBA and don't need the bmc.

Edit: For those asking. You can only get JBAs through JBA. I've never seen a sale in the year I've been watching their site but they do give a military discount.

 

[4runnin4mylife]

Update on this. I did need a BMC even with caster at 4. In addition to fender liner mod and mudflap removal.

Is 4 the highest they could get your caster? Also, how much lift do you have? I know all 4runners are different, but more than a handful that I know of right now that have JBA UCA's and 285/70's on stock trail wheels with spacers didn't need a BMC. Just curious if they stopped at 4 because that's all they could get?

 

[JP421]

Is 4 the highest they could get your caster? Also, how much lift do you have? I know all 4runners are different, but more than a handful that I know of right now that have JBA UCA's and 285/70's on stock trail wheels with spacers didn't need a BMC. Just curious if they stopped at 4 because that's all they could get?

These were the final numbers, they said any higher was starting to throw toe and camber off too much.

 

[4runnin4mylife]

These were the final numbers, they said any higher was starting to throw toe and camber off too much.

I'm not really sure why he pulled caster out of the left front because it was higher initially before he did anything. On top of that it has the same camber and better toe initially also. I see he was able to get you to 4 on the right front on caster and that started pushing the camber. Anyway, you got the BMC so now when those 285's wear out, you can move on up to the 295's without a problem! :naughty:

 

[JP421]

I'm not really sure why he pulled caster out of the left front because it was higher initially before he did anything. On top of that it has the same camber and better toe initially also. I see he was able to get you to 4 on the right front on caster and that started pushing the camber. Anyway, you got the BMC so now when those 285's wear out, you can move on up to the 295's without a problem! :naughty:

The before numbers may be off from what they were as I had spacers installed on the drivers side front and rear to fix the horrible lean it had the same time it was in the shop.

I would have gotten 295s from the start if I knew I was going to end up with a BMC.

 

[Mutant138]

I would have gotten 295s from the start if I knew I was going to end up with a BMC.

Ditto. Shoulda woulda coulda.

 

[Narat_524]

Goodyear Duratrac 285/70-17 on stock ORP wheels 7.5", 4.8BS +15 offset, King suspension 2.5" lift, JBA UCA.

Rubs on the front of the JBA control arm, both left and right, starting just shy of full lock. Passenger side also just barely rubs the sway bar and body mount (only when compressed - driver side was fine). Both sides just barely rubbed front inner mud flap (replaced front bumper, no longer a problem).

Spacers or heavy grinding will be necessary for me.

Narat

 

[gyarb94]

I'm getting JBA installed along with 285 wildpeaks and method 312 wheels at 8.5 wide, 0 offset and 4.75 backspace. I'm anticipating needing spacers to clear the JBA and potentially a BMC in addition to the mud flap removal and fender mod. Lift will be 3"

 

[91324]

Running 285/70 Ridge Grapplers, 17 X 8.5 -10MM Ray 10s, and Dobinson 2.5" lift with my JBA UCAs. Caster is 3.9 on driver and passenger side.

No rubbing at full lock in either direction, but I also don't have front mud flaps + had BMC done before stepping up from the 275/70 KO2s I ran before.

 

[flexmagli]

Just got my JBAs in and was planning on running 285/70r17 STT Pros with a 2.5” ADS lift on stock TRD Offroad wheels. Looks like the consensus is I will need spacers. For those running spacers are you only running them up front?

 

[ax2021]

Just got my JBAs in and was planning on running 285/70r17 STT Pros with a 2.5” ADS lift on stock TRD Offroad wheels. Looks like the consensus is I will need spacers. For those running spacers are you only running them up front?

I’ve got a JBA with 2.5” King, TRD PRO rims, Falken M/T 285/70/17 . No problems so far.


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[15eagle]

JBA UCA rubbing

Hi everyone, I have Old Man EMU lift and JBA UCA on 285/70 R17 and when I do a full lock the inner side of the tire rubs on the UCA. I am not sure about using spacers or what other solution would be possible.
Any tips?

Thanks.