Can't Decide: JBA or new SPC UCAs
- Thread starter T4Jumper
- Start date
tackleberry1145
New member
EddieV4runnin
New member
Don’t the wheels rub on the JBA’s unless you run wheel spacers?? My buddy did on his FJ running his stock wheels and 285/70R17 STT PROs.
Teamoatmealpie
New member
FWIW- SPC UCA, drivers side ball joint and bushings went shitty after 13 months.
Put in new BJ and bush- see how she goes. If goes south again, there getting pulled for JBA.
Put in new BJ and bush- see how she goes. If goes south again, there getting pulled for JBA.
I'm at 3.75" of lift over a stock 4runner. So, about 2.75" over where I was sitting stock with my TRDP. My concern with the JBA is that my 295/70's will rub. I am running the OE TRDP wheels, and would like to avoid spacers if at all possible to reduce scrub and the need for even more body and frame chopping. Does anyone have any input on clearance at full down swing?
email the owner of JBA, but i have a feeling you'd rub
I wish all of these manufacturers would put full dimensions out for us to see. But I agree. Just looking at them, it is apparent that the front added support of the arm is definitely in the interference zone.
Should be fine. Pretty sure they recommend a wheel with 4.5 backspacing.
From their website:
Please Note: 32.7" and larger diameter tires need aftermarket wheels with less then factory wheel back space. https://tiresize.com/calculator/
Wheel recommendation
LT285/70R17 (32.7" x 11.2") tire on 17 x 9 wheel, -12mm offset (4.50" backspace)
LT285/75R16 (32.8" x 11") tire on 16 x 9 wheel, -19mm offset (4.25" back space)
LT255/85R16 (33.10" x 10") tire on 16 x 8 wheel, -12mm offset (4" back space)
LT315/70R17 (34.4" x 12.4") tire on 17 x 9 wheel, -25mm offset (4.00" backspace)
Tire sizes that work well with the JBA UCAs
255/75R17 tires 32.1" x 10" on factory wheels
275/65R18 tires 32.1" x 10.8" on factory wheels
Any tire that is 32" diameter and smaller there is no fitment problem
Please Note: 32.7" and larger diameter tires need aftermarket wheels with less then factory wheel back space. https://tiresize.com/calculator/
Wheel recommendation
LT285/70R17 (32.7" x 11.2") tire on 17 x 9 wheel, -12mm offset (4.50" backspace)
LT285/75R16 (32.8" x 11") tire on 16 x 9 wheel, -19mm offset (4.25" back space)
LT255/85R16 (33.10" x 10") tire on 16 x 8 wheel, -12mm offset (4" back space)
LT315/70R17 (34.4" x 12.4") tire on 17 x 9 wheel, -25mm offset (4.00" backspace)
Tire sizes that work well with the JBA UCAs
255/75R17 tires 32.1" x 10" on factory wheels
275/65R18 tires 32.1" x 10.8" on factory wheels
Any tire that is 32" diameter and smaller there is no fitment problem
I’ve been running 285/70/17s on factory wheels with 1.25” spacers long before I put my JBAs on. I don’t have a drop of rub anywhere
Sent from my iPhone using Tapatalk
Last edited:
That tire size falls into their acceptable rance, as it is around 32.5-32.8" depending on the brand. I will be running nearly a 33.6" tire on the next go around once my current set runs out. So, unless I throw some spacers back on, I will be rubbing quite often.
True, but for that to be good logic, and someone to run the correct offset and a wide 33+ inch tall tire at a normal 10.5" to 11" width, the tire would stick about at least 1.5" beyond the fender. That just looks hilljacked IMO.
ridefast
New member
Good call, I was worried that the offset might not play well.
Zero0575
Member
255 70 18
I know this is an old thread, but hopefully I can still get a reply...
I just did the daystar lift (2.5/1.5) and now I need to fill out the wheel wells as well as upgrade the UCA to gain back lost caster...
I'm wanting to do 255 70 18 on the factory 18" limited wheels. JBA's website says that 255 75 17 will work, and 255 70 18 is essentially the same. Anyone know if this size will work on the 18" limited factory wheels?
I know this is an old thread, but hopefully I can still get a reply...
I just did the daystar lift (2.5/1.5) and now I need to fill out the wheel wells as well as upgrade the UCA to gain back lost caster...
I'm wanting to do 255 70 18 on the factory 18" limited wheels. JBA's website says that 255 75 17 will work, and 255 70 18 is essentially the same. Anyone know if this size will work on the 18" limited factory wheels?
Globetrotter78
New member
Im in the JBA fan club too! ABSOLUTELY EXCELLENT customer service, well constructed, awesome red, and a common reliable ball joint. The washers during install will make you a little insane and likely require an extra set of hands but definitely worth it!
I am running Icon Rebounds, Spidertraxx 1.25s and 285/70 with no rub (did do a BMC but that's not UCA related)
I am running Icon Rebounds, Spidertraxx 1.25s and 285/70 with no rub (did do a BMC but that's not UCA related)
Attachments
bashmaster
New member
Ive been looking to get rid of my total chaos UCAs for sometime now. I think Im gonna give these a shot. bye bye TC hello easy maintainability
