Too much negative camber?
#1
Instructor
Thread Starter
Join Date: Dec 2002
Location: New Jersey
Posts: 228
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
I replaced the two rear tires and asked the service manager to give it some negative camber so the tires won't wear out on the outside. He wrote down MAX negative camber so the mechanics gave it as much as the Hunter machine would allow and still make it a "green" status.
Now the two rear wheels are really sticking out. I can tell by just looking at them.
I don't mind if this much negative camber can wear the inside of the tires out quicker as long as it improves handling.
Do you think I can lose handling by having too much negative camber in the rear? If so, I may have to go back and re-align the wheels again
Now the two rear wheels are really sticking out. I can tell by just looking at them.
I don't mind if this much negative camber can wear the inside of the tires out quicker as long as it improves handling.
Do you think I can lose handling by having too much negative camber in the rear? If so, I may have to go back and re-align the wheels again
![Mad](https://rennlist.com/forums/images/smilies/mad.gif)
#2
Keeper of the Truth
Lifetime Rennlist
Member
Lifetime Rennlist
Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Originally posted by ypshan
I replaced the two rear tires and asked the service manager to give it some negative camber so the tires won't wear out on the outside. He wrote down MAX negative camber so the mechanics gave it as much as the Hunter machine would allow and still make it a "green" status.
Now the two rear wheels are really sticking out. I can tell by just looking at them.
I don't mind if this much negative camber can wear the inside of the tires out quicker as long as it improves handling.
Do you think I can lose handling by having too much negative camber in the rear? If so, I may have to go back and re-align the wheels again
I replaced the two rear tires and asked the service manager to give it some negative camber so the tires won't wear out on the outside. He wrote down MAX negative camber so the mechanics gave it as much as the Hunter machine would allow and still make it a "green" status.
Now the two rear wheels are really sticking out. I can tell by just looking at them.
I don't mind if this much negative camber can wear the inside of the tires out quicker as long as it improves handling.
Do you think I can lose handling by having too much negative camber in the rear? If so, I may have to go back and re-align the wheels again
#3
Instructor
Thread Starter
Join Date: Dec 2002
Location: New Jersey
Posts: 228
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
The tires are sticking out at the bottom. I asked him how many degrees but he couldn't tell me. Just the Max the machine allows while staying in green.
I did a very rough measure using a string and a heavy coin. When I put the string with the coin hanging right next to the bottom of the tire, I have about 1" space between the top of the string and the top of the tire. The radius of the tire is 25".
1/25 = 0.04
Since sin(2.3 degree) is roughly 0.04 as well, I figure that I have about 2.3 degrees of negative camber.
What do you think?
I did a very rough measure using a string and a heavy coin. When I put the string with the coin hanging right next to the bottom of the tire, I have about 1" space between the top of the string and the top of the tire. The radius of the tire is 25".
1/25 = 0.04
Since sin(2.3 degree) is roughly 0.04 as well, I figure that I have about 2.3 degrees of negative camber.
What do you think?
#4
Burning Brakes
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Shan,
If your measurements were correct, I concur on the math.
I am very surprised the tech could not give you a printout of the actual camber settings.
As a rule, the more negative camber the better the cornering ability. Without getting into all of the technical jargon concerning CG's, moments, lines of force, etc., suffice it to say that as a car corners, the outer tire flattens on the road providing a large contact patch.
If your measurements were correct, I concur on the math.
I am very surprised the tech could not give you a printout of the actual camber settings.
As a rule, the more negative camber the better the cornering ability. Without getting into all of the technical jargon concerning CG's, moments, lines of force, etc., suffice it to say that as a car corners, the outer tire flattens on the road providing a large contact patch.
Trending Topics
#8
Addict
Rennlist Member
Rennlist Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
BTW, did someone manage to put more negative camber (than stock) on the front wheels? I'd need some, but my mechanics told me that the 4WD system makes it impossible... :?
--Pierre
--Pierre
#9
Keeper of the Truth
Lifetime Rennlist
Member
Lifetime Rennlist
Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Originally posted by Pierre
BTW, did someone manage to put more negative camber (than stock) on the front wheels? I'd need some, but my mechanics told me that the 4WD system makes it impossible... :?
BTW, did someone manage to put more negative camber (than stock) on the front wheels? I'd need some, but my mechanics told me that the 4WD system makes it impossible... :?
#10
Addict
Rennlist Member
Rennlist Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Just my $.02 but any shop should give you a print-out of where all specs were when you brought it in........what OE range is.......what they left it at.
Mention your request for that when you bring it in......then add the print to your service log............see how the car drives, an then next time you will be able to request a change here/there (from before)...and, more importantly, know what they just did to your car.
I'm still working on various ideas of modifying rear control arms to help in quest to reduce rear negative.
Mention your request for that when you bring it in......then add the print to your service log............see how the car drives, an then next time you will be able to request a change here/there (from before)...and, more importantly, know what they just did to your car.
I'm still working on various ideas of modifying rear control arms to help in quest to reduce rear negative.
Last edited by GreggT; 08-12-2003 at 08:31 PM.
#11
Addict
Rennlist Member
Rennlist Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Thanks for the reply, Viken! My Turbo already has the H&R suspension, which is set pretty low. So, you say it should be possible to put more camber with that?
--Pierre
--Pierre
#13
Keeper of the Truth
Lifetime Rennlist
Member
Lifetime Rennlist
Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Originally posted by Pierre
My Turbo already has the H&R suspension, which is set pretty low. So, you say it should be possible to put more camber with that?
My Turbo already has the H&R suspension, which is set pretty low. So, you say it should be possible to put more camber with that?
#14
Rennlist Lifetime Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Remember that the camber can be adjusted like Viken says, however a lot of dealers or shops in general will place an aggressive camber on it because the tires and wheels are over sized and they are trying to keep the tires from rubbing. Instead of rolling the fenders they will set more negative camber to roll the wheel in and avoid this.
#15
Addict
Lifetime Rennlist
Member
Lifetime Rennlist
Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Take it to a race mechanic that has a good reputation to setup your car properly...Gee....Hunter gives you detailed camber, toe etc values...The "green" on the hunter machine underneath has the value in numbers visible at all times. Also the "green" is relative to which car the "mechanic" input at the start of the session as different setups are stored, if he made a mistake which is likely God knows what setup you have there... I would not trust an idiot like this with the work he did. Setup of the car is so important it can lead to a heavy accident if you push it and the car is unbalanced as it may surprise you with the handling.
Get your car properly balanced ( corner balance, alignement etc) and you will see the difference.
Get your car properly balanced ( corner balance, alignement etc) and you will see the difference.