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Old 04-27-2006, 01:39 AM   #1
homiusang
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Default What rear camber to run on stock STi?

I had an alignment done couple weeks ago with my stock 04 STI and I told them to maximize the negative cambers and zero toe all around. The guys were able to get -.6 up front for cambers and ~-1.2 on the back.
I know the front negative camber will enhance handling, but what about the rear camber? Do you also max it out or just leave it?
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Old 04-27-2006, 09:28 AM   #2
Jon Bogert
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I'll leave it to the autocross and track guys to tell you what setting will give you the extra .002% traction, but I can tell you that decreasing rear negative camber to around -1 or even a little less improves feel and turn-in quite a bit. Especially if you have so little front negative camber.
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Old 04-27-2006, 09:37 AM   #3
salisburyv
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there is a safe range on the negative camber. For daily driving you really dont want more than -1.5 deg. camber. the rear range (stock) is .2/ -1.6. . I have -1.2 front. and - 1.0 rear. Too much will wear the tires on the inside edge. Bring it to a reputable alignment shop and tell them what you want specifically. They should be able to come pretty close. But make sure they know what they are doing. As alignments are one of the cheapest and best ways to make your car handle good. Its also one area where, if its bad....it can really mess things up. Ask them for a printout of the alignment specs.

Last edited by salisburyv; 04-27-2006 at 09:48 AM.
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Old 04-27-2006, 10:16 AM   #4
tuskenraider
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Quote:
The guys were able to get -.6 up front for cambers and ~-1.2 on the back. I know the front negative camber will enhance handling, but what about the rear camber? Do you also max it out or just leave it?
They clearly didn't try very hard up front. They should be able to get at least -1.0 up front, just by making sure the camber bolt is in max position and loosening the strut mount bolts from behind the wheel with weight of the car on them on the rack. As far as rear camber, the more you have, the less rotation you'll get from the rear end during corning because grip will be increased. Most people I see autox'ing like around -1.0 to help get a little "oversteer" that is lacking with the stock suspension setup. Braking ability will decrease, but with the typical <-1.5 Subies have in the rear, this isn't really noticeable. Going with less of course will do the opposite. Even though there are no stock rear camber bolts, some adjustment is possible by manipulating the slop in the stock rear strut mounting points. Again, loosening the bolts with the weight on the car will maximize rear camber. Jacking the car up and pulling the top of the wheel out, will minimize it. Set toe to 0 and tire wear will not be an issue with stock camber adjustment ability.

Last edited by tuskenraider; 04-27-2006 at 10:40 AM.
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Old 04-28-2006, 10:55 AM   #5
homiusang
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Quote:
Originally Posted by tuskenraider
They clearly didn't try very hard up front. They should be able to get at least -1.0 up front, just by making sure the camber bolt is in max position and loosening the strut mount bolts from behind the wheel with weight of the car on them on the rack. As far as rear camber, the more you have, the less rotation you'll get from the rear end during corning because grip will be increased. Most people I see autox'ing like around -1.0 to help get a little "oversteer" that is lacking with the stock suspension setup. Braking ability will decrease, but with the typical <-1.5 Subies have in the rear, this isn't really noticeable. Going with less of course will do the opposite. Even though there are no stock rear camber bolts, some adjustment is possible by manipulating the slop in the stock rear strut mounting points. Again, loosening the bolts with the weight on the car will maximize rear camber. Jacking the car up and pulling the top of the wheel out, will minimize it. Set toe to 0 and tire wear will not be an issue with stock camber adjustment ability.
some great info here, thanks alot!
Yeah I think the guy didnt' try very hard to max out the front camber because right upon they take the car in, I said they should *at least* get -1 deg. up front. The alignment is done at a very reputable shop where most autox'ers go to, so I guess they know what they are doing. I had the alignment done a day before my last track day and the improvement was very noticiable, especially for the money spent.
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