Thanks man, I already got some answers about this topic from a friend

 

I need to do the GT3 lower contol arm upgrade. But since I just corded the outside front my track tires due to not enough negative camber and had to do a trackside Hooiser purchase, I am low on funds. Where have people found the best price on these two-piece arms?

Thanks,

Steve
2005 Boxster S

 

you will ruin he hoosier on 1 day without more than -2.5 to -3.5 front camber

 

Yes, I know. I ran them a bit at BIR and had a lot of front outside wear. I was planning to go to Road America in a couple weeks, but I won't go back to the track until the camber is fixed.

 

There really aren't and smokin deals to be had on the arms. Tarett is probably the best deal and he'll supply the washers. His spacers are much cheaper than OEM as well.

I used the 16mm on each side plus the litronic 1mm.

Min camber I can get is 2.3 degrees.

 

Thanks, Tarett does look good as they will make up the bushing spacers needed to use the stock trailing arms. I did notice they were much cheaper on the arm spacers too. I just need to save the cash now.

When you say min camber of 2.3 degrees, does that mean you can not get more negative than -2.3 degrees? I want to get to be able to get to at least 2.5 negative and maybe 3.0 negative. I am interested to figure out the right arm spacers I need.

 

With the 16mm shims the least I can get is 2.3. I can adjust on the upper mounts for -3.0 + degrees.

Be aware that tires will wear and the car will tramline (follow camber and cracks) on the street.

 

I run -2.2 front zero toe and -1.8 rear and .16 (max) toe and my street tires are wearing good and my track tires are wearing good.

It is the toe that really wears the tires.

Before I had GT3 lower control arms my max front camber was -1.4 with the Sport PASM and in my other Carrera S cars with regular PASM it is only -1. However I got excellent street tire wear that those setting with the same toe settings I am currently running.

 

Thanks for the specs. I currently have -0.75 camber front with no toe. In the back , I have -2.0 camber and 0.2 toe total (0.1 per side). That was the most I could get out of the front. I corded the front outside edge on a nice set of Sport Cups with that. The new Hoosiers look bad in the front after running a few sessions, rears look to be wearing even. I need more negative camber in the front, but maybe -2.2 is enough.

 

For R-comp tires you need WAY more camber up front. You need to track with street tire or at the max a Toyo R888. You will continue to ruin tires outside edge until you get more camber or adjust your driving to suit the set up of the car.

Keep front and rear with in .5 of a degree.....so if you run -.75 front you need to be at -1.4 ish rear MAX... -2 with your current alignment is cause your front to push and further wear out the front tires. Reduce you rear camber so that the rear can rotate some and the car will actually run a little better...however for the tires you are running you need way more camber in the front.

 

I promise I won't. Tires are a terrible thing to waste.

 

get 996 gt3 LCAs - they are $600 for both arms. they do fit 997 car.

now about hoosiers - even with 2.3f 2r degrees of camber but with stock shocks and springs my car did not get much benefit. it needs way more camber like 3f 2.7r and way stiffer springs/shocks. now with kumhos v700 traction is way better than with hoosiers and outer wall of rear tires not getting damaged at all. on hoosiers it got almost completely eaten up when tires were 50% used so I had to flip them around.
hopefully with new suspension hoosiers will start working properly.

 

996 GT3 LCAs for me. I have PASM (and Sport Chrono if it matters) on my 987S so I am hoping to don't need more than negative 2.5 degrees camber in the front. If that is not enough, I will go back to Sport Cups or something else when the Hoosiers are done.

 

i think better advice was to use toyo ra1 instead of hoosiers - those should work fine with this camber. why not to try hoosiers as well, it is all fun.

 

Hi (to: mobonic),
Can you still get deals on GT3 Control Arms?
Tried to PM you but I'm new to the forum. Please e-mail me at vjramire@yahoo.com since I don't check in frequently.
Thanks!
Vince