Wheel alignment

pcar928fan;14502 wrote: Brad, I hate to break it to you but there is NO 928 suspension that will allow -6 Deg of camber! NONE! Nada, ZIP...unless you are running something custom the MOST you can get out of an S4 is about -2.4 deg. If you change to earlier suspension arms (upper or lower, I can't remember which) you can get just over -3 deg... Nothing even CLOSE to 6.

Your physics in Canada must be different than our down here in the States because if you push really hard on one side of a tire and hardly at all on the other side of the tire, the side being pushed down, WILL wear more. If you add some toe then it is even worse of course.

LOL you are kind of right James, but the physics is the same

Yes they are custom A-Arms as stated.
They are from Carl,
www.928motorsports.com/parts/upperaarmreplacement.php
they are about an 8th of an inch short and add -1.5 deg to the camber so I guess -3.9 would be closer when added to your spec.
It sure looks like a lot but I couldn't tell you because the car has never been on a rack.

You are kind of right about the camber, but If you go ask a professional wheel alignment shop, the tech will not use camber as a (wear adjustment) You may ware a tiny bit but camber is not a large factor.
dont make me pull out my college books, BTW I enjoyed Physics more then chem class


en.wikipedia.org/wiki/Camber_angle

For unmodified cars, neither caster nor camber are usually major wear factors. Toe is. For cars with faulty parts or modified parts, camber can become a wear issue - still less than toe, however.

These do go hand in hand. If you are running 0 camber and toe in or out you will wear the tire much more evenly than if you are running -X camber and have a toe in or out issue...wear the inside if -X camber and wear the outside of the tire if +X camber.

Brad, with the modified upper arms then you can get much more - camber than stock. I think the most we ever got on my race car was -3.2 or something like that...

pcar928fan;14632 wrote: These do go hand in hand. If you are running 0 camber and toe in or out you will wear the tire much more evenly than if you are running -X camber and have a toe in or out issue...wear the inside if -X camber and wear the outside of the tire if +X camber.

Brad, with the modified upper arms then you can get much more - camber than stock. I think the most we ever got on my race car was -3.2 or something like that...

Ya James I was not very happy when I put them on and found out that they were the comp style and short but i can over come that with a custom spacer that i'm working on. I had to get the right material first.



I tried to find a picture that shows the - camber but it is not that noticeable in the pictures

I have had to literally ARGUE with people at Sears about doing my alignments. Sears in Fort Lauderdale where I live has the Hunter DSP-4000 alignment rack that these cars need. I had to FORCE them to put the car on the rack and then NOT lift it when I had my alignment done last. They argued and argued back...

"We know all about these cars!" Sure you do-

In the end, with PROPER RIDE HEIGHT and a Sears alignment job, my car three years later wears all four of its tires evenly. It just wears them out in oh...about 2500 miles is all~

[Perhaps its owner needs to start using the brakes before making 90 degree turns at 45 mph....]

N