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Heavy thread wear after installing spacers???

Old Mar 13, 2013 | 05:47 PM
  #11  
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Originally Posted by Sang
camber is not what kills the tread, its the amount of toe in or out you have that determines the amount of ware. camber only determines the contact patch amount.
I have negative camber and toe in, so the toe in should indicate that it wears on the outside of the tire, right?

Could the camber relieve the wearing of the outer side of the tire so that it wears on the inside instead?
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Old Mar 13, 2013 | 05:54 PM
  #12  
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Camber would be adjusting how much your wheel tilts forwards or backwards on a vertical axis.
Toe is how much your wheel is turned in or out on a horizontal axis.

0 camber would mean your whole tire is evenly spread across the pavement, negative camber would tip the top of the wheel inward towards the body of the car leaving the wheel tilted on the inner "half" of the wheel.
0 toe is when there wheel is perfectly straight forward and backwards in position to the car. toe in is when the front of the tire is pointed towards the center of the car.
the more aggressive your toe setting the faster your tire will wear purely because it will be pushing forward and inwards (to create grip while in motion.)
for example (these percentages are not accurate at all im just showing you how it might work.)
-3 degrees of camber would mean 60% of your tire is touching the ground. balancing on the inner half of the tire.

found an image for you.

Last edited by Sang; Mar 13, 2013 at 06:02 PM.
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Old Mar 13, 2013 | 06:00 PM
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the more negative camber the smaller your contact patch (with the ground). *camber determines the amount of lateral grip but only to a certain extent... anything past 3 is a bit useless and used for cars in the show world.*
the more toe you have that contact patch will wear aggressively.*toe determines how much forward grip*
but if you dont really care too much about driving aggressively.

the less camber you have the bigger your contact patch.
the less toe you have the less wear you will have.
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Old Mar 13, 2013 | 06:02 PM
  #14  
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Originally Posted by unoe60
When i bought this car i was looking at my rear wheels(when they were all tucked in under the fender) thinking about the toe in angle and negative camber which i thought was extreme.
But after driving like this from August to Jan there was really no noticeable difference on the thread wear.

Guess i gotta buy 2 new rear tires and have BMW do an alignment on it(with the spacers if they allow it), i'm gonna remember to have them adjust a little less negative camber and toe in. Might help!

Thanks man!!
it will help,,, just talk to the shop foreman and tell him to go as far to reduce negative camber as the computer will allow...and still within factory specs..
the negative camber is the reason why these cars grip so well hitting the turns hard.. In Germany they are lucky to drive 120mph all day long and can really hit the corners.. When turning hard on corners the tire actually squares up to the road and makes full contact on the entire surface of the tire,, and gives that great cornering ability... Unfortunately we cant drive like that...( such a bummer) so dont need such radical negative camber.. you wont even feel much difference..

Last edited by H F; Mar 13, 2013 at 06:04 PM.
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Old Mar 13, 2013 | 08:32 PM
  #15  
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I know how Camber, Toe in & out and Caster works, i worked at VW/Audi in Norway for 6 years.
I just don't seem to understand how my tires got like this when i have negative camber and toe in on my rear wheels...anyways...ill get an alignment and have them go a little lighter on the camber and toe in, dont want to buy tires every 6 months and i dont want to remove the spacers either

I have no clue when this car had an alignment last, but not since i bought it.
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Old Mar 13, 2013 | 10:12 PM
  #16  
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hahahaha sorry, i come from a forum where 80% of the people didnt know what the hell they were talking about so i went straight to explaining the basics.
it could just be the tire brand you're running. some are made out of softer material than others.
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Old Mar 14, 2013 | 07:07 PM
  #17  
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i am using spacers for the 4 last years winter and summer , same tire wear with or w/o
do a proper alignment in reputable shop which knows BMW
GL
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Old Mar 14, 2013 | 08:18 PM
  #18  
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Originally Posted by unoe60
I know how Camber, Toe in & out and Caster works, i worked at VW/Audi in Norway for 6 years.
I just don't seem to understand how my tires got like this when i have negative camber and toe in on my rear wheels...anyways...ill get an alignment and have them go a little lighter on the camber and toe in, dont want to buy tires every 6 months and i dont want to remove the spacers either

I have no clue when this car had an alignment last, but not since i bought it.
The reason the insides wear out is... because all the cars wieght is actually mostley sitting on the inside 3 inches of the tire , because the negative camber is so radical, the top of the tire is leaning way in,,, and the bottom inside corner is supporting all the cars weight,,, thats why it wears out on the inside edge...
When they do an aliegnment they actually put 200 lbs on the rear floor board to get additional wieght on the tires and more wieght toward the center.. then they set the camber..
On my car i went 1. % negative camber and added 5psi..(went with nitrogen) added 180 lbs,( woofer, box and amps ) of wieght to get the car to ride more on the center of the tire,, and it worked,,...i break the tires off the wheels rotate my rears side to side .. and no more inside tire wear.. after i rotate the rears and they start wearing evenly i reduce tire pressure to 3lbs over,, as the tire wears evenly all the way across ...I have actually been working on this madness for the last two years to get my tires to last...I purchased all four tires on october 2010 and my rears are due,, but worn out completly even..

Last edited by H F; Mar 14, 2013 at 08:25 PM.
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Old Mar 14, 2013 | 09:37 PM
  #19  
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Originally Posted by H F
The reason the insides wear out is... because all the cars wieght is actually mostley sitting on the inside 3 inches of the tire , because the negative camber is so radical, the top of the tire is leaning way in,,, and the bottom inside corner is supporting all the cars weight,,, thats why it wears out on the inside edge...
When they do an aliegnment they actually put 200 lbs on the rear floor board to get additional wieght on the tires and more wieght toward the center.. then they set the camber..
On my car i went 1. % negative camber and added 5psi..(went with nitrogen) added 180 lbs,( woofer, box and amps ) of wieght to get the car to ride more on the center of the tire,, and it worked,,...i break the tires off the wheels rotate my rears side to side .. and no more inside tire wear.. after i rotate the rears and they start wearing evenly i reduce tire pressure to 3lbs over,, as the tire wears evenly all the way across ...I have actually been working on this madness for the last two years to get my tires to last...I purchased all four tires on october 2010 and my rears are due,, but worn out completly even..
You're my hero of the day. I was wondering if I could salvage my rear evo v12 tires due to negative camber (w 10mm spacers). Answered my question. Thanks!
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Old Mar 15, 2013 | 02:03 PM
  #20  
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Originally Posted by Lambda28
You're my hero of the day. I was wondering if I could salvage my rear evo v12 tires due to negative camber (w 10mm spacers). Answered my question. Thanks!
LOL,,, no hero Bro.. glad i could help.Thats what this site is all about..learning off each others knowlage and experiences... Ya,, once u switch'em over its like a new set.. and get double the tire life..... After my first set of tires got wasted,, and looked like a wire brush on those inside corners.. Put me on a quest,, to figure something out...
Just make sure that ur tires can be rotated side to side,, because some tires are one sided only ,,and u cant swicth side to side.. Since u have Ventus v12 evo's like i do the tread pattern is the same on both edges ... Ur good to go....
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