I just got back from the Lexus dealership. While there I asked how they can lower on F-sport springs and keep the alignment so as not to wear the inner tire. He knowledgeably explained (and showed on an exploded view of the suspension) that there are replacement camber bushings for the front that are available in + or - to counter the lack of direct adjustment. They run $180 for the set. As for the rear, he showed the part labelled "cam adjust", so the bushings are not needed. Was he full of @#$& or is this true about the bushings?

 

this is the first time i've hear of this. can that lexus rep provide part #? if this is true, it would solve a lot of problems!

 

yeah for sure we need to get to the bottom of this. It would help a lot of people out around here with tire wear issues.

 

also first time ever i hear about camber adjustment on the 3gs. all info we have so far indicate no camber adjustments on the 3gs at all, let alone any (aftermarket?) bushings that allow adjustment

 

I'd be interested!

 

I went back and talked with a different guy who said the same thing. The part numbers are 48075-30040 (+20 degree offset) and 48075-30050 (-20 degree offset). It is shown in orange in the pic below of the front suspension. I don't know how it would work, but that is what they said. For the rear, the orange rod is for some cam adjustment. Apparently it has an oval slot that can be slid in/out and the bolt then tightened for minor adjustment. He didn't know how much lowering it could actually help correct though. Hopefully this helps.

 

What dealer is this? My fronts are fine I just need a slight rear adjustment.

 

that's very interesting, maybe someone can ask the parts department and find out more? if this is true then it's some big findings, i am sure a lot of us can use some camber adjustment.

i am going to be out of town for a while so i won't have time to check

 

I know that for the LS430s you can replace the bushing for the front lower control arm to adjust camber/caster, if you think about it, the position of where the lower control arm will affect where the knuckle will sit thus changes camber/caster.

As far as the rear, if you notice that arm, it goes to the side of the knuckle, only able to adjust toe. to correct camber, you're gonna have to either adjust the top or bottom of the knuckle. on LS430s, to adjust rear camber, a replacement arm is available in different lengths to adjust camber, either (+).75 degrees or (-).75 degrees.

 

good point, looking at the rear setup that arm only adjust the side which corresponds to the toe, i am not sure how that could affect camber?

 

very much interested...funny thing is i am experiencing tire wear on my fronts much more....but not so much on the rears due to a toe adjustment from my guy.

 

The info was from Lexus of Carlsbad. Unfortunately my car isn't lowered yet, so I can't really verify anything at this point.

 

I wanna know how this turns out.

 

is there anyone that can install this? I need this on my car. For me, the fronts are okay, but the rear tires are bad. Please PM me there someone out there that can help.

 

I can perhaps see that the front's could be adjustable with a bushing but for the rear, that's STRICTLY a toe adjustment netting ZERO effect on the camber. It's obvious where the arm attaches to the hub assembly. Plus, looking at the rear suspension on my GS in person, there's on way.