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Tires,Wheels,Suspension,Brakes Info about Tires, Wheels, Suspensions, Brakes, etc.

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Old 01-28-2015, 12:06 PM   #1
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Originally Posted by project86 View Post
So... this is where i might sound silly....... but i want the to be able to make the car as low as I feel like. Im not one of the "hella flush" fan boys or anything but i do like to aggressive look of a low FC and I'm not planning on running stock size/offset wheels. I am about to replace all the suspension bushings with the same kit and getting the rear toe steer eliminator bushings.
Watch out...

The FC doesn't like going that low without running into major camber problems, especially in the rear.
An (upright) rear camber adjust rod will only take out so much (negative) camber in the rear.
Even with the adjustable links on the front of the rear subframe, you end up smacking the whole thing on compression.
Pete_89T2's pic looks like it has a smidgen too much camber in the rear, or it's a weird illusion of the pic due to the compression of the suspension due to the turn...

You'd get away with about 2 - 3 "fingers" of gap in the rear before there is really too much (negative) camber.
Remember, rear camber hurts your straight-line acceleration due to inefficient contact patch of the rear tires (upon acceleration).
It also causes uneven tire wear back there.

Fronts are no problem due to almost any off-the-shelf front camber plates can dial it all out.
It's still a bit problem in the rear on really drastic drops...


-Ted
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Old 01-28-2015, 12:10 PM   #2
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Quote:
Originally Posted by RETed View Post
Watch out...

The FC doesn't like going that low without running into major camber problems, especially in the rear.
An (upright) rear camber adjust rod will only take out so much (negative) camber in the rear.
Even with the adjustable links on the front of the rear subframe, you end up smacking the whole thing on compression.
Pete_89T2's pic looks like it has a smidgen too much camber in the rear, or it's a weird illusion of the pic due to the compression of the suspension due to the turn...

You'd get away with about 2 - 3 "fingers" of gap in the rear before there is really too much (negative) camber.
Remember, rear camber hurts your straight-line acceleration due to inefficient contact patch of the rear tires (upon acceleration).
It also causes uneven tire wear back there.

Fronts are no problem due to almost any off-the-shelf front camber plates can dial it all out.
It's still a bit problem in the rear on really drastic drops...


-Ted
EDIT: just remembered Mazdatrix sells rear camber links to adjust it... im unsure what the mechanical limits are though.
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Last edited by project86; 01-28-2015 at 12:17 PM.
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Old 01-28-2015, 12:23 PM   #3
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Originally Posted by project86 View Post
EDIT: just remembered Mazdatrix sells rear camber links to adjust it... im unsure what the mechanical limits are though.


Thats why mine was so low short stroke coilers and I had AWR eerything in the arse lateral links spherical bearings etc.
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Old 01-28-2015, 12:49 PM   #4
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Originally Posted by RETed View Post
Pete_89T2's pic looks like it has a smidgen too much camber in the rear, or it's a weird illusion of the pic due to the compression of the suspension due to the turn...
^I noticed that in the picture too, and wondered why it looked that way. I always assumed it's just the lateral-G loading combined with the wavy road surface crowning. The RB springs I have are supposed to lower the car about 3/4", but when I measured the difference (from subframe rails to my garage floor), the difference was only about 1/4" lower than with my stock springs & shocks. Granted, the stock springs were likely worn out and sagging when I replaced them.
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Old 01-28-2015, 12:56 PM   #5
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Originally Posted by Pete_89T2 View Post
^I noticed that in the picture too, and wondered why it looked that way. I always assumed it's just the lateral-G loading combined with the wavy road surface crowning. The RB springs I have are supposed to lower the car about 3/4", but when I measured the difference (from subframe rails to my garage floor), the difference was only about 1/4" lower than with my stock springs & shocks. Granted, the stock springs were likely worn out and sagging when I replaced them.

Haha the dreaded worn out spension lift when replaced....
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