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-   -   Alignment: Car wanders slightly with zero toe up front. (https://www.ft86club.com/forums/showthread.php?t=86462)

swarb 04-09-2015 08:30 PM
Alignment: Car wanders slightly with zero toe up front.
 
So I got an alignment.
camber 2.9 front 2.7 rear
.08 toe rear
0 toe front
everything was the same on both sides except for caster.
caster left 5.5 caster right 6.3
Car seems to wander slightly and mostly right.
I am thinking it could be the 0 toe or the cap on the road that makes rain water pool to the outside of the road. Or possibly the caster?

Normal?
How much toe is .08(degrees?) equal to? 1/32? 1/16?
does front toe out during compression? (because i was toe'd out before alignment)
does rear toe in during compression? (because i was toe'd in before alignment)
factory stock height measurement? from fender to center of wheel or from fender to ground?

bfrank1972 04-10-2015 12:11 PM
Quote:
Originally Posted by swarb (Post 2206777)
So I got an alignment.
camber 2.9 front 2.7 rear
.08 toe rear
0 toe front
everything was the same on both sides except for caster.
caster left 5.5 caster right 6.3
Car seems to wander slightly and mostly right.
I am thinking it could be the 0 toe or the cap on the road that makes rain water pool to the outside of the road. Or possibly the caster?

Normal?
How much toe is .08(degrees?) equal to? 1/32? 1/16?
does front toe out during compression? (because i was toe'd out before alignment)w
does rear toe in during compression? (because i was toe'd in before alignment)
factory stock height measurement? from fender to center of wheel or from fender to ground?
Possibly, uneven caster can cause the car to wander in one direction or the other. Also might be exacerbated by the significant front camber.

7thgear 04-10-2015 12:38 PM
are your tire pressures equal?

mrk1 04-10-2015 01:20 PM
Crown in the road, pretty typical to see a wonder to the right If your looking for it.

swarb 04-10-2015 01:44 PM
Quote:
Originally Posted by 7thgear (Post 2207510)
are your tire pressures equal?
Yes pressures are equal. I checked before alignment and the alignment guy checked also. They are a little high at 40psi cold. Slightly stretched 225/40-18 federal 595ss which run wide, on a 9.5 wheel. I will try 36-38psi and see how that works.

mav1178 04-10-2015 05:08 PM
Quote:
Originally Posted by swarb (Post 2207612)
federal 595ss
Your tires are contributing to the "wandering", and your camber is exaggerating any crown in the road.

-alex

swarb 04-10-2015 05:17 PM
Quote:
Originally Posted by mav1178 (Post 2207929)
Your tires are contributing to the "wandering", and your camber is exaggerating any crown in the road.

-alex
because they are stretched? or because they are low quality/budget tires?

mav1178 04-10-2015 05:25 PM
Quote:
Originally Posted by swarb (Post 2207942)
because they are stretched? or because they are low quality/budget tires?
Because of the tread design. I used to have the same tires on a completely stock S13 (205/55-15) and with no other changes, the car was more prone to track/wander on road surfaces.

If you want to be truly scientific about it, you have to replicate the same driving on the same roads with different tires.

-alex

Hyper4mance2k 04-10-2015 06:27 PM
Both. The stretch exacerbates camber, plus directional tire tread designs are notorious for wonder on the road crown.

WRKHARD 04-12-2015 05:34 AM
rear toe on these cars can result in pull. snag some rear toe arms and have the alignment shop straighten the rear out

swarb 04-12-2015 05:52 AM
Quote:
Originally Posted by WRKHARD (Post 2209515)
rear toe on these cars can result in pull. snag some rear toe arms and have the alignment shop straighten the rear out
It has positive toe in the rear. Aka toe in. Which is would not cause this slight problem. Negative toe aka toe out would though, which I don't have.

It is probably from the tires, So I am going to rotate wheels front for rears and double check the pressures and drop a couple pounds to 36-38 from 40, and see how that works.


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