How close to UCA is safe?

I have 275/65r20 toyo open country mt’s and are about 1/2 inch from touching my uca. Is that too close? I’m worried when going down at hwy speed the tire is going to expand.

 

Seems like 1/2" would be a lot to expand. I'm not really sure how close is safe, but here's a pic of my 37x12.50s with stock UCAs. That's about 3/16". I've been going with that for the past 10k miles without any issues. I've flexed out the suspension and crawled under there to look at the clearance with the wheels turned to every position, and the tires don't ever touch the UCA. So I just roll with it.

 

Hell yeah let it ride

 

my only gripe is that i'll need wheel spacers to fit 37x13.50s, which means more

 

Mine has about half the clearance you have. 20k miles and no problems.

 

Ok I won’t lose sleep over it

 

I’m interested to see how that works for you

 

My tires are 295 55 20 on tss wheels and oem control arms, btw.

 

Why is the whole UCA dirty except at the end then?

 

maybe OP used his finger as a measurement tool

 

Did they send you two washers for each ball joint, or did you have to ask them for an extra one?

For those that don't know, JBA has an issue with the boot not seating properly with the new style ball joints on both the Tundras and 4Runners.

 

What is JBA's maximum back spacing recommendation? My Zone UCA's specs state a maximum of 6" back spacing. Did you check JBA's maximum backspacing allowed before you bought them to account for your wheel offset/tire combo???? Looks like you have plenty of clearance.

 

This^^^^

 

Plenty of room, and even if it touches it's not going to slash you're tire. People run 1/4 that amount all the time.

 

Good eye!

Yup, that's exactly what happened. I took these pics as soon as I got the tires mounted. My fingers rubbed all over the UCA as I was checking for clearance.

 

No I didn’t I just saw red and bought

wasn’t aware of this

 

Are you running those UCA with stock wheels?

 

Yes sir

 

Finally! Someone who could answer my question. Been looking at adding zones when i replace 275/60 to 275/65R20

thank you

 

No problem

 

Shit just saw one of your posts in another thread, are you running wheel spacer?

 

No. I bought some but didn’t need them after all

 

What UCA’s are those? I like the red.

 

jba