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Thread: Wheel Spacers!!!! calling all wheel whores Reply to Thread
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Topic Review (Newest First)
10-10-2012 10:00 AM
saabkid37 i guess im just crazy then.

http://www.trackpedia.com/wiki/Vehic...ide#UNDERSTEER



10-10-2012 09:01 AM
We_sleigh
Quote:
Originally Posted by saabkid37 View Post
Your 2 inches off the ground...the roll center is gone.
Ive been on coils for 2 weeks. I drove to OC and thats it. Had the same spacing for 1.5 years prior. No under or oversteer, no matter how hard I tried.


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10-10-2012 08:30 AM
saabkid37 Your 2 inches off the ground...the roll center is gone.



10-10-2012 04:29 AM
We_sleigh
Quote:
Originally Posted by BobSabbert View Post
Stock offset is 42mm, so in front you are (+12 + +25) 37mm less positive, or at offset +5mm front (vs. 42mm stock). Rear you are (+12 + +40mm) or 52mm less positive, -10mm. (vs. 42 mm stock)

Track:
front, Coupé/5-door/Convertible _______ 57.2" (1452 mm)
front, Viggen ______________________ 57.7” (1466 mm)
rear, Coupé/5-door/Convertible _______ 56.8" (1442 mm)
rear, Viggen ______________________ 57.3” (1456 mm)

Looks like stock front to rear track difference is +10mm in front, you now have +15mm in the rear.

(Feel free to correct my math, it's late and I may be making mistakes.)

Seem like it should handle poorly for a FWD car, but it all comes down to springs, bars, shocks, tires, driving style. YMMV.
Huh. Its always handled great. Ive tried to make it understeer/oversteer, with no avail. Only in snow.
I have el cheepo tires too.



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10-09-2012 08:54 PM
upstateViggen So what size spacers would be recommended for front and back for best handling and no rubbing?
10-09-2012 07:57 PM
BobSabbert
Quote:
Originally Posted by We_sleigh View Post
Front spacing is 25mm, final offset 15.
Rear is 40mm spacing, final offset 0.

IIRC, with my new wheels, I would be at -10? Et30 with 40 mm spacing.
Stock offset is 42mm, so in front you are (+12 + +25) 37mm less positive, or at offset +5mm front (vs. 42mm stock). Rear you are (+12 + +40mm) or 52mm less positive, -10mm. (vs. 42 mm stock)

Track:
front, Coupé/5-door/Convertible _______ 57.2" (1452 mm)
front, Viggen ______________________ 57.7” (1466 mm)
rear, Coupé/5-door/Convertible _______ 56.8" (1442 mm)
rear, Viggen ______________________ 57.3” (1456 mm)

Looks like stock front to rear track difference is +10mm in front, you now have +15mm in the rear.

(Feel free to correct my math, it's late and I may be making mistakes.)

Seem like it should handle poorly for a FWD car, but it all comes down to springs, bars, shocks, tires, driving style. YMMV.
10-09-2012 06:46 PM
We_sleigh
Quote:
Originally Posted by saabkid37 View Post
Final offset or spacer size? The first one is what matters. Stock the cars have something like an inch wider front track width.
Front spacing is 25mm, final offset 15.
Rear is 40mm spacing, final offset 0.

IIRC, with my new wheels, I would be at -10? Et30 with 40 mm spacing.


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10-09-2012 06:15 PM
saabkid37 Final offset or spacer size? The first one is what matters. Stock the cars have something like an inch wider front track width.



10-09-2012 05:43 PM
We_sleigh
Quote:
Originally Posted by saabkid37 View Post
When I ran my larger spacers in the rear of the viggen all other things equal, it had noticeable understeer when driving the same twisty road up to my parents house everyday. I'm just saying, don't try to go whipping it around till you know what it's going to do.

Or put the same size spacer on all 4
25 mm front, 40 rear.


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10-09-2012 05:27 PM
saabkid37 When I ran my larger spacers in the rear of the viggen all other things equal, it had noticeable understeer when driving the same twisty road up to my parents house everyday. I'm just saying, don't try to go whipping it around till you know what it's going to do.

Or put the same size spacer on all 4



10-09-2012 04:15 PM
We_sleigh
Quote:
Originally Posted by saabkid37 View Post
Right that's because it induces understeer. As if you don't expect it, you understeer into gas stations like the recent guy in calif
No, it only understeers in snow, lol!
It doesnt understeer or oversteer at all, and hasnt, since I got springs. Coils, are just stiffer.


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10-09-2012 04:11 PM
2legit2quit I dont know what either of you are blabbing about. Are we talking about all turning radius being effected or just sharp turns being effected?

Cause my daily driving low speed turns seem pretty much the same.
10-09-2012 03:23 PM
saabkid37 Right that's because it induces understeer. As if you don't expect it, you understeer into gas stations like the recent guy in califOrnia.



10-09-2012 03:22 PM
saabkid37 Right that's because it induces understeer. As if you don't expect it, you understeer into gas stations like the recent guy in calif



10-09-2012 03:02 PM
We_sleigh
Quote:
Originally Posted by saabkid37 View Post
No, it's not debatable, it's fact. It's how suspension geometry works.

The front and rear axle lengths are not equivalent to begin with so you can't just go by offset. If you remove all body roll like you have, you won't notice. But otherwise it is very noticeable

Also...I've done the experiment
Ive been on coils for like 2 weeks, for a year and half prior, i was on worthless Koni springs, with a wide rear track. Less tail happy, and way less understeer.




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10-09-2012 02:02 PM
saabkid37 No, it's not debatable, it's fact. It's how suspension geometry works.

The front and rear axle lengths are not equivalent to begin with so you can't just go by offset. If you remove all body roll like you have, you won't notice. But otherwise it is very noticeable

Also...I've done the experiment



10-09-2012 01:43 PM
2legit2quit
Quote:
Originally Posted by We_sleigh View Post
Debatable. I run 0 offset rear and 15 front. Handles loads better than when it was 15 all around, and wayyyy better than stock.

Im also 24 inch fender to ground on Coils too.


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How would i go about measuring the offset of my front and rear?
10-09-2012 12:16 PM
1995BlueBeast Do you have an angle from the rear 2legit? Also, what springs are on it?
10-09-2012 11:16 AM
We_sleigh
Quote:
Originally Posted by saabkid37 View Post
you will feel a significant degradation in handling if you only put spacers in the rear.
Debatable. I run 0 offset rear and 15 front. Handles loads better than when it was 15 all around, and wayyyy better than stock.

Im also 24 inch fender to ground on Coils too.


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10-09-2012 10:07 AM
saabkid37 you will feel a significant degradation in handling if you only put spacers in the rear.



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