255/85/16 Rubbing SPC UCAs?

6112/5160s
SPC UCAs
Stock '21 OR wheels
Falken Wildpeak 255/85/16

With the setup above, I don't have any rubbing while parked or during normal driving. I was looking in the wheel well yesterday and noticed the UCAs are really close to the tires on both the driver's and passenger's sides (pictures attached). Based on those, is it safe to assume this will become a problem off-road?

Any good way to driveway test for this? I'm still in engine break-in so I'm not ready to take it off-road quite yet.


EDIT: To clarify, there is no contact from full-turn either direction. I'm worried it will contact when the wheel is stuffed.

 

Those look like SPC upper control arms, if they are I have 255/85r16 Yokohama geolanders on a trd offroad wheel with no issues.

 

You should probably be okay but if you are that worried you can buy a set of hub centric spacers like the spidertrax 1.25".

$145 Spidertrax WHS007 Blue Wheel Spacer Kit

https://www.amazon.com/Spidertrax-W...t=&hvlocphy=9032975&hvtargid=pla-570343956605

 

Do you have similar clearance without issues? I was hoping to avoid spacers, but yes, that's my backup plan.

 

Spidertrax or Bora wheel spacers your good

 

Originally I was going to run these with stock wheels and had purchased some but I ended up buying some wheels that have plenty of negative offset to push the wheel out.

 

Note that those tires are narrower than the stock tires. I have a very similar setup (255/85r16 with SPC) with no problems. I did have some rubbing when stuffed and turning which I fixed with a 4* caster alignment at a 4wd shop, but I don’t think it was on the UCA. I haven’t heard of anyone needing spacers to fit tall skinnies.

https://www.tacomaworld.com/threads/put-255-85-16s-on-stock-or-wheels-and-suspension.491079/

 

You’ll be fine. As the wheel articulates so does the control arm. Meaning that they will be that far away no matter what position your suspension is in. No need for spacers.

 

Thanks for brining this up. I think the issue here may be my ignorance on how the suspension moves under load. When the tire move up (higher, closer to the fender) does it also move slightly out, on a pivot point?

 

Here’s an animation from Cambirg but the idea is the same. Notice that the spindle is attached to both control arms (upper and lower). So as the wheel moves up and down, they do too. Your tire physically can’t get closer or further away from the arms. The benefit you have with the SPC UCAs is that you can move the upper ball joint out so the spindle (and tire) gets further away from the UCA. From the picture you posted, the ball joint is at the center of its adjustment so you can move the tire out another 3/4” or so if you move the balljoint (you’ll need an alignment afterwards BTW).

 

What do your lower control arm alignment cams look like? It looks like you are pulling a fair amount of camber out with the location of the upper ball joint. You may be able to adjust the lower cams and gain clearance at the upper control arm by moving the upper ball joint.

 

Thanks for sharing! I can't see it on mobile but I'll check it out tonight.