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Aggressive Wheels & Stretched Tires: Post 'Em Up! [[Some NSFW]]

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  #17221  
Old 11-08-2010, 04:06 PM
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marcus, ive always HEARD 10 mm. i cant say for sure. but wouldnt it also depend a touch on what size/brand of tires he runs?
 
  #17222  
Old 11-08-2010, 04:09 PM
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Yes, not considering tire brand yet, but that would be a consideration too. I'm assuming he'll go with the same tire brand he's currently running.
 
  #17223  
Old 11-08-2010, 05:36 PM
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generally its 1 degree of camber= 5mm of space but that of course gets blurred when you introduce the fender work which by doing a little more of can prevent having to add more neg camber to a certain extent

but yes 1 degree of camber=5mm of space

but you don't really go by that, it's not sooo technical, once the car is getting its alignment you go by sight
 
  #17224  
Old 11-08-2010, 08:23 PM
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[QUOTE=nitsuj;5465721]^^^^Yup like everyone else said in that thread rims are way to big. Cars sitting way to high.

Anywho thought this was pretty schweeet:






[QUOTE]

that carboard cut out body is not what's up
 
  #17225  
Old 11-08-2010, 10:01 PM
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Originally Posted by eurodre
generally its 1 degree of camber= 5mm of space but that of course gets blurred when you introduce the fender work which by doing a little more of can prevent having to add more neg camber to a certain extent

but yes 1 degree of camber=5mm of space

but you don't really go by that, it's not sooo technical, once the car is getting its alignment you go by sight
Funny, I was doing this calculation today, but using trig formulas. Yes, 1* is approx 5mm, depending on side wall height, you are closer to 5.3-5.5mm per 1*.
 
  #17226  
Old 11-08-2010, 10:17 PM
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Originally Posted by CandlestickPark
Helping a friend out with his setup, looking for a definitive answer on this and I'm sure one of your guys can confirm.

X mm = 1 degree of camber

What is X? I've read 5mm all the way up to 10mm. If you go 5mm more agressive how much camber do you need to add so everything clears?

This is for 19s by the way.

Thanks guys!
pretty much, use a trig formula with a right angle triangle. I created a formula for you to use...



In this pic, visualize your wheel well. The angle is front the center point of your wheel. The angle (theta) will be the degree change in your camber setting. Side CB (adjacent side) will be your wheel + tire height. Side AB will be your clearance (opposite side)

remember: tan(angle theta) = opposite side(AB)/adjacent side(CB)
therefore: to figure out opposite side length (AB) you must have the following algabraic formula:

tan(angle theta) x adjacent side (CB) = opposite side (AB)
tan(theta)xCB = AB

theta = tan(1*) = .0175
CB = Sidewall height (mm) + (Wheel diameter in mm/2) {note 1in = 25.4mm)
AB = clearance (mm)

theta(CB) = AB
Here is what I ran for my car today. Running a 255/35/19 rear
Sidewall height = 255(.35) = 89.25mm
Wheel Diameter = 19"(25.4) = 482.6mm/2 = 241.3mm (radius)
CB = 89.25+241.3 = 330.5mm

.0175(330.55) = 5.78mm overall change in clearance from the fender line w/ a 1* change in camber (+ or -)
 

Last edited by Matzo Ball; 11-08-2010 at 11:01 PM.
  #17227  
Old 11-08-2010, 10:25 PM
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Apply today for your math degree from the University of G35Driver
 
  #17228  
Old 11-08-2010, 10:30 PM
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Haha.. i need a refresher course..
 
  #17229  
Old 11-08-2010, 10:32 PM
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You can get your GED....General Edimincashun by Driver.
 
  #17230  
Old 11-08-2010, 11:42 PM
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Hahaha! Good stuff!
 
  #17231  
Old 11-08-2010, 11:46 PM
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Dave you da man! Thanks for confirming with the math..haha
 
  #17232  
Old 11-08-2010, 11:51 PM
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what about the rest of us that helped out?

 
  #17233  
Old 11-08-2010, 11:53 PM
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Eh, you just said 5mm, I kinda already knew that.

Now 5.78mm calculated via trig, that's some real info.
 
  #17234  
Old 11-09-2010, 12:07 AM
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^^^ but who's gonna double check to make sure the calculations are accurate?

I presume it is accurate and with that - very impressive I've searched the internet for definitive and that's the most concise I've ever seen.
 
  #17235  
Old 11-09-2010, 12:09 AM
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Its been almost 13 years since I've taken trig, maybe one of these youngins on here can check Dave's math.
 


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