Camber Settings for Track

1MORELAP · 09-25-2013, 01:42 PM

Lower the car slightly with H&R springs. Little lower will also give you a bit more camber...

bdaddylo · 02-09-2014, 07:53 PM

Time to bump this tread. I would like feedback from those who are running more than -2.5 in the front for track, not autocross. When I ran more than -2.5 on my 1M, the inner tread wore out before the outer. The E82 and E9X do not need as much negative camber as the E36 and E46 chassis.

66BM · 02-09-2014, 08:06 PM

Quote:

Originally Posted by bdaddylo

Time to bump this tread. I would like feedback from those who are running more than -2.5 in the front for track, not autocross. When I ran more than -2.5 on my 1M, the inner tread wore out before the outer. The E82 and E9X do not need as much negative camber as the E36 and E46 chassis.

Actually the E92 needs more. If you are getting uneven wear, it could be a combination of things. Setup, springs, tire pressures. What is your current setup. Sounds as if your toe maybe wrong up front. Do you have a track "alignment" setup? Is this a dedicated track car? There are a lot of factors. Example. I run -3.5 camber up to -4.0, 6 degree caster, 0 degree toe up front. Rear -1.5 - 2.5 camber .10 toe. 900 / 800# springs, 305/645x18 square.

bdaddylo · 02-09-2014, 08:56 PM

Quote:

Originally Posted by 66BM

Actually the E92 needs more. If you are getting uneven wear, it could be a combination of things. Setup, springs, tire pressures. What is your current setup. Sounds as if your toe maybe wrong up front. Do you have a track "alignment" setup? Is this a dedicated track car? There are a lot of factors. Example. I run -3.5 camber up to -4.0, 6 degree caster, 0 degree toe up front. Rear -1.5 - 2.5 camber .10 toe. 900 / 800# springs, 305/645x18 square.

I'm about to start tinkering with my E90. I'm going to keep the suspension stock for now, but will be putting on camber plates. I'll be running square 275/35/18 Conti takeoffs.

66BM · 02-09-2014, 08:59 PM

Quote:

Originally Posted by bdaddylo

I'm about to start tinkering with my E90. I'm going to keep the suspension stock for now, but will be putting on camber plates. I'll be running square 275/35/18 Conti takeoffs.

Leave 0 toe up front. Mark the camber plates after an alignment. If you change the camber often, it will automatically increase toe. Just keep an eye on tire temps and pressures. Take a couple of hot laps, bring the tires up to temp, pull in the pits have someone take pressures and temps. You can control wear that way.

Porschefile · 02-10-2014, 09:20 AM

Quote:

Originally Posted by bdaddylo

Time to bump this tread. I would like feedback from those who are running more than -2.5 in the front for track, not autocross. When I ran more than -2.5 on my 1M, the inner tread wore out before the outer. The E82 and E9X do not need as much negative camber as the E36 and E46 chassis.

I was cording the outsides of conti slicks with -2.7 front on 18x10 et25. Was the -2.5 heating the insides of street tires or race? Street tires don't need much camber, but the E9X chassis does IMO.

It also varies wildly depending on driving style and track. Roebling road (most abrasive surface I've been on in the M3) wore out slicks about twice as fast as Barber or VIR. You'll also wear the outsides much more if you like to fling the car into corners as opposed to entering slowly.

66BM · 02-10-2014, 09:22 AM

Quote:

Originally Posted by Porschefile

I was cording the outsides of conti slicks with -2.7 front on 18x10 et25. Was the -2.5 heating the insides of street tires or race? Street tires don't need much camber, but the E9X chassis does IMO.

It also varies wildly depending on driving style and track. Roebling road (most abrasive surface I've been on in the M3) wore out slicks about twice as fast as Barber or VIR. You'll also wear the outsides much more if you like to fling the car into corners as opposed to entering slowly.

+1 on all you said. Although Roebling wasn't too bad on my Pirelli's last Dec. I actually did ok.

Bennettm3 · 06-04-2017, 08:49 AM

Reviving an old thread, but for the track I run -4* up front and around -3* in the back running on Bridgestone re71r. The car needs a lot of camber to properly handle around a track. I was running 3.3 up front and 2.1 in the back and the car had snap oversteer.

Datka · 06-04-2017, 01:43 PM

Quote:

Originally Posted by Bennettm3

Reviving an old thread, but for the track I run -4* up front and around -3* in the back running on Bridgestone re71r. The car needs a lot of camber to properly handle around a track. I was running 3.3 up front and 2.1 in the back and the car had snap oversteer.

Do you think -4/-3 is enough? According to your logic more negative camber is better for the track.
Why don't you try -5/-4 and report back

admranger · 06-04-2017, 05:32 PM

Quote:

Originally Posted by Bennettm3

Reviving an old thread, but for the track I run -4* up front and around -3* in the back running on Bridgestone re71r. The car needs a lot of camber to properly handle around a track. I was running 3.3 up front and 2.1 in the back and the car had snap oversteer.

I'm not too sure... What were your other alignment settings? Adding negative camber to older 911's could cause snap oversteer, but I hadn't heard of that for BMWs, especially the E9x chassis which is inherently very stable.

Bennettm3 · 06-05-2017, 09:37 AM

Quote:

Originally Posted by admranger

I'm not too sure... What were your other alignment settings? Adding negative camber to older 911's could cause snap oversteer, but I hadn't heard of that for BMWs, especially the E9x chassis which is inherently very stable.

I don't have too much experience with 911s outside of some back roads, driven 83 sc, 964 c4, 997.1 Carrera, and 991 Carrera s, but down at roebling a month or so back, the car was running about 3* up front and 2* in the back and the whole car was showing excessive wear on the outside of all the tires. It was also snapping into turn 1 under the transition of braking to throttle as well as a few other places around the track. So, due to these results we decided to put a little more negative camber in the car to give it some more grip and better tire wear. When we first set the car we were limited to the amount of camber we could run because we had not replaced the rear camber/toe arms. I will be at Road Atlanta in a couple weeks and will report back with my evaluation of the car after adding some camber

Bennettm3 · 06-05-2017, 09:39 AM

Quote:

Originally Posted by Datka

Do you think -4/-3 is enough? According to your logic more negative camber is better for the track.
Why don't you try -5/-4 and report back

-4/-3 should be enough, anymore and we will probably be losing a little to much contact with the surface of the track, I will be at road Atlanta in a couple weeks and will give an update on how it went!

admranger · 06-05-2017, 07:51 PM

Quote:

Originally Posted by Bennettm3

I don't have too much experience with 911s outside of some back roads, driven 83 sc, 964 c4, 997.1 Carrera, and 991 Carrera s, but down at roebling a month or so back, the car was running about 3* up front and 2* in the back and the whole car was showing excessive wear on the outside of all the tires. It was also snapping into turn 1 under the transition of braking to throttle as well as a few other places around the track. So, due to these results we decided to put a little more negative camber in the car to give it some more grip and better tire wear. When we first set the car we were limited to the amount of camber we could run because we had not replaced the rear camber/toe arms. I will be at Road Atlanta in a couple weeks and will report back with my evaluation of the car after adding some camber

Are you on stock springs and shocks or ?

Bennettm3 · 06-05-2017, 11:30 PM

Quote:

Originally Posted by admranger

Are you on stock springs and shocks or ?

Linear springs, 700lb rear, 600lb front. Nitron racing shocks.

lutfy · 06-06-2017, 11:36 AM

Quote:

Originally Posted by Bennettm3

Linear springs, 700lb rear, 600lb front. Nitron racing shocks.

Your rates are fine and Nitron makes a quality setup. However, -4/-3 is a LOT of camber IMO.

jakob66

The e9x chassis needs less static camber compared to the E36/46 cars. Fast guys are running -2.5 front and -1.8 at the back. At least I observed that anything more at the rear and it takes away from putting the power down at track out. Based on input from Malek@MRF I was able to run some of my fastest laps.

What are your times at Road Atlanta?

Lutfy

Bennettm3 · 06-08-2017, 07:47 PM

Quote:

Originally Posted by lutfy

Your rates are fine and Nitron makes a quality setup. However, -4/-3 is a LOT of camber IMO.

jakob66

The e9x chassis needs less static camber compared to the E36/46 cars. Fast guys are running -2.5 front and -1.8 at the back. At least I observed that anything more at the rear and it takes away from putting the power down at track out. Based on input from Malek@MRF I was able to run some of my fastest laps.

What are your times at Road Atlanta?

Lutfy

We are ending up putting the camber at around -3.5 up front and -3 in the back. I haven't been to Road Atlanta since the suspension upgrade, so a time wouldn't be too revealing, but I will post times and thoughts in this thread after the event this weekend. However, I ran a 1:25 at roabling and a more experienced friend/instructor ran a 1:21 in my car and was being a little soft on the car. From his time driving the car he believed it needed more camber than what it had (-3/-2), the guy who does my alignment also believed it should have more camber, but we were limited by my rear arms at the time of the original alignment. He is also a very experienced racer and helped set up one of the fastest e92s to be on road Atlanta. (ran sub 1:30 with full interior)

admranger · 06-08-2017, 08:57 PM

Quote:

Originally Posted by lutfy

Your rates are fine and Nitron makes a quality setup. However, -4/-3 is a LOT of camber IMO.

jakob66

The e9x chassis needs less static camber compared to the E36/46 cars. Fast guys are running -2.5 front and -1.8 at the back. At least I observed that anything more at the rear and it takes away from putting the power down at track out. Based on input from Malek@MRF I was able to run some of my fastest laps.

What are your times at Road Atlanta?

Lutfy

Your settings are right about where I'm at. I can't remember the exact settings that I ended up at. I have them written down but they are in a box someplace in storage until we move into the new place.

Bennettm3 · 07-18-2017, 08:09 AM

Just a quick update on the camber at 3.5/3, the car handles very well and tire wear is about perfect on the r888r's, car just needs a little toe out to help with understeer then it should be good to go.

Datka · 07-18-2017, 09:17 AM

Quote:

Originally Posted by Bennettm3

Just a quick update on the camber at 3.5/3, the car handles very well and tire wear is about perfect on the r888r's, car just needs a little toe out to help with understeer then it should be good to go.

As far as I understand slight bit of toe out in front helps turn in on the track, not understeer.

lutfy · 07-19-2017, 01:23 PM

Quote:

Originally Posted by Bennettm3

Just a quick update on the camber at 3.5/3, the car handles very well and tire wear is about perfect on the r888r's, car just needs a little toe out to help with understeer then it should be good to go.

How do you like these tires? Also what were you running for times at RA with this setup?

Cheers,

Lutfy

slicer · 07-19-2017, 07:21 PM

Quote:

Originally Posted by lutfy

How do you like these tires? Also what were you running for times at RA with this setup?

Cheers,

Lutfy

FWIW a friend of mine tried the R888R for the first time on his GTR. He said that he felt that they were an improvement over the NT01's that they previously ran. We were on a new track so I can't make any lap time comparison. Obviously the GTR is a different animal than our E92's.

intercool · 08-10-2017, 08:12 AM

So I recently purchased an E92 with Camber plates from a fellow forum member. He has camber plates on it with H&R lowering springs and HD Bilstiens. He sets the camber at -2.2 for track and then back to stock afterwards as it is a daily driver.

I talked with one of my mechanic friends and he said that just adjusting the camber isn't a good idea because it affects toe and will mess the bushings.

My question, if I change the camber for the track, do I need to do an alignment before and after events? If I bypass alignment, will it cause issues?

09-25-2013, 01:42 PM	#133
1MORELAP Captain 99 Rep 700 Posts Drives: '22 911 GTS '19 X3, X5, X7 Join Date: May 2010 Location: Seattle, WA iTrader: (0)	Or... Lower the car slightly with H&R springs. Little lower will also give you a bit more camber... __________________ I apologize for spelling mistakes up front, they are a result of multitasking.
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02-09-2014, 07:53 PM	#134
bdaddylo Major 168 Rep 1,479 Posts Drives: 2017 F80 M3 Join Date: Dec 2010 Location: Houston, TX iTrader: (3) Garage List 2011 BMW E90 M3 [10.00] 2005 Acura MDX [0.00] 2011 BMW 1 Series M ... [10.00]	Time to bump this tread. I would like feedback from those who are running more than -2.5 in the front for track, not autocross. When I ran more than -2.5 on my 1M, the inner tread wore out before the outer. The E82 and E9X do not need as much negative camber as the E36 and E46 chassis. __________________ _______________________ 1991 E30 M3/Brilliantrot 2017 F80 M3/AW
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06-04-2017, 08:49 AM	#140
Bennettm3 New Member 0 Rep 28 Posts Drives: 2010 BMW M3 Join Date: Oct 2015 Location: Atlanta, GA iTrader: (0)	Reviving an old thread, but for the track I run -4* up front and around -3* in the back running on Bridgestone re71r. The car needs a lot of camber to properly handle around a track. I was running 3.3 up front and 2.1 in the back and the car had snap oversteer.
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07-18-2017, 08:09 AM	#150
Bennettm3 New Member 0 Rep 28 Posts Drives: 2010 BMW M3 Join Date: Oct 2015 Location: Atlanta, GA iTrader: (0)	Just a quick update on the camber at 3.5/3, the car handles very well and tire wear is about perfect on the r888r's, car just needs a little toe out to help with understeer then it should be good to go.
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08-10-2017, 08:12 AM	#154
intercool Private 10 Rep 87 Posts Drives: E92 M3 Join Date: Mar 2016 Location: Atlanta iTrader: (0)	So I recently purchased an E92 with Camber plates from a fellow forum member. He has camber plates on it with H&R lowering springs and HD Bilstiens. He sets the camber at -2.2 for track and then back to stock afterwards as it is a daily driver. I talked with one of my mechanic friends and he said that just adjusting the camber isn't a good idea because it affects toe and will mess the bushings. My question, if I change the camber for the track, do I need to do an alignment before and after events? If I bypass alignment, will it cause issues?
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