Originally Posted by terrasmak

It’s actually Toe that murders the tires. Any slight change in ride height and tie changes drastically with our cars.

Originally Posted by BlueSQ

I've been doing a lot of research into adjustable front upper control arms. Read just about every thread on them I can find. Generally I like to go with the middle of the road option so as to not cheap out but also not to go overkill. However, these two points have me hung up:

1) I've seen murmur that anything besides the SPL brand is poorly designed, specifically that they're dangerous. Basically I've read that every single adjustable front upper control arm on the market has failed in one way or another except SPL brand. All the manufacturer reps say "oh we fixed it and are releasing an updated version" yadda yadda yadda but it all just sounds like forum sponsor BS. I don't need these things failing on the freeway after a professional installation.

2) Will -2 degrees of camber feather a new set of tires? Is it worth the time and money of an adjustable FUCA to get the front camber back into spec (-1.3 to +0.3) if tire longevity is an issue?

Let me elaborate on #1 because I think there's a lot of feelings revolving this.

Kinetix:




Z1 Motorsports:

"Wanted to report I have had a ball joint failure on drivers side. Luckly I was slowing down for stop sign and was almost at a stop hit a small bump and SNAP!"



SPC: "it has everything to do with the physical design of a loaded in shear bolt. It's a structurally inferior design to a loaded in compression design like the SPL's. Having seen SPC's snap at the track and causing thousands of dollars worth of damage to a car, I would not run a front camber arm from any mfgr with that physical design period."

Megan:



Anyway, the list goes on. Any unbiased opinions on this? The post that caught my eye was a rant about many cheaper FUCAs being unsafe by design because it puts too much shearing force on the ball joint which eventually leads to the threads snapping.