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Old 05-30-2003, 02:12 PM   #1
ebeck
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Question How much - camber in the rear is too much?

All right, driving style aside, why some one would want lots of - camber aside etc... How much - camber in the rear is too much.

I define too much as "causing 300 tread wear tires to wear excessively or excessively unevenly." My next post will be about the same thing adversly affecting handeling. I know, a can of worms.

That is, a 10,000 mile tire turned into a 8500 mile car is not excessive. To me.

A 10,000 mile tire turned into a 5000 mile tire is excessive. To me.

Yeah I know driving style and what not and this is sort of subjective, but it is good to have some reference from those who know.

Stock is what -1.7 or so. I have read -1.3 but stuck a camber guage on many a WRX and found -1.6, -1.7 to be common with stock springs.

Here is a list of values to select from
  • 1.5
  • 1.75
  • 2.0
  • 2.25
  • 2.5
  • 2.75
  • 3.0
  • 3.25
  • 3.5
  • 3.75
  • 3.5
  • 3.75
  • more than these
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Old 05-30-2003, 02:20 PM   #2
fengshui-fu
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Try -1.0 in the rear. Its what whiteline recommends for sporty driving. Otherwise -0.75 in the rear for daily driving and least tire wear.

chris
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Old 05-30-2003, 03:02 PM   #3
enduroshark
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How much is too much?

When you are getting uneven wear for your own driving.


Have people really measured -1.6 from the factory?
Cool! I thought my camber gauge needed to be recalibrated!
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Old 05-30-2003, 03:05 PM   #4
Silver Bullet 02
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Since rear camber is not adjustable camber plates or bolts are required for any significant camber changes in the rear.

If you have adjustment I think the best setting for maximum tread wear is probably around -1 degree. Best performance for a daily driver is going to be somewhere near that number. Considering how much the WRX naturally understeers you want more negative camber up front than in the rear.
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Old 05-30-2003, 03:19 PM   #5
ebeck
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The impetus for this post is the fast that I have Tein coilovers. No tein does not make adjustable camber plates at all. For any model. Since I have the Flex units I can lower the car to road racing levels. Woo Hoo!

Here is how the conversastion goes from there.

Q - Oh, but what about that knarly rear camber?
A - Just replace the rear mounts with adjustable camber plates. Q - Great, does any body know of some that fit the 5 mm wider threaded nut of the Flex units?
A- This should, that should.
Q- Have you ever tried.
A-No but it should. Brand X plates work with brand Y coilovers.

Problem Brand Y also works with stock mounts which Flex does not. As near as I can tell, the Flex units are absurd. Why lower if you can not correct -camber. You can not even buy something else that fits. I have camber bolts and am still at -2. Seems goofy to have double adjustable units that have to be stock height. Oh, forgive me Tein .5 inch lower. Wow!
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Old 05-30-2003, 03:26 PM   #6
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The Tein RA's come with camber plates up front. I have them and only have -0.7 to -0.8 camber in the rear at the recommended settings. I know everyone expects that it would be more but that's what the computer printout says. I don't know if their mounting plates are made to compensate or what but I'm right where I want to be.

I know this is a long shot but are you sure you have your camber bolts adjusted in the correct direction? Sometimes those eccentrics can be confusing if you aren't concentrating when you adjust them. Probalby not but -2 with camber bolts seems like way too much.
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Old 05-30-2003, 03:51 PM   #7
ebeck
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Helpfull response.

I thought so too and put another post out there. Many responded that that seems correct though. Some say with just Prodrive springs they got -3.2. I do not know about that.

I agree -2 seems extreme. The car is not too low either. That was the most common response. I will have the bolts chacked although the installer asures me they ae in correctly.
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Old 05-30-2003, 03:55 PM   #8
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SCCA rules allow autocrossers to slot the strut mounting plate holes to alter camber for some classes. You may consider that as a last resort. If the rears are like the fronts you have to move them around a half inch for every degree of camber change. I'm working from memory but I think that is in the ballpark for the fronts.
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Old 05-30-2003, 04:25 PM   #9
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Exclamation I autoX twice a month and.....

I run around -1 in the back....so the rear will come around still

Team ARG!
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Old 05-31-2003, 09:42 AM   #10
ScreaminFast
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right now I'm running -1.5 up front, and -1.5 in the back, even with my whiteline camber bolts we couldn't get any less camber in the rear. I am lowered however via JIC FLT-A2s.


for AutoX, I plan to move the front's on the adjustable plates to get like -3.0 camber, and then move them back afterwards....
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Old 05-31-2003, 01:10 PM   #11
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Ideally, you'll want to check tire temps for your given driving style to determine the right camber, pressure, and alignment. If you're worried about adverse wear, make sure your toe is at or near 0 since that will effect wear more than camber alone.

The flex units came with mounting plates that should be able to be adapted to their camber adjustable plates. You shouldn't have any problems using camber bolts to adjust your rear camber. If you can't seem to get it right, I'd take to someone who can.

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