I've been having serious "twitchiness" in the rear-end of my S2000 for months. Granted, my rear tires are near-wasted (3/32") and it's been 40-50F when I've driven. But it's been REALLY twitchy. Often unpredictable, and not too fun either.

In any case, I took one of the alignment recommendations made by other S2000 users, and tweaked it slightly to be less agressive (still slightly out of Honda spec, so will probably chew up my tires a bit faster than stock alignment would).

So on Saturday, I had an alignment done (to my specs) at NTB - they did a great job BTW. In any case, it is FANTASTIC - no more twitchiness - very predictable and tossable. I'm just shocked at the difference.

It did take about 50 minutes because of the camber/caster adjustments took a bit more time than normal, but it was the best 60 bucks I've spent in YEARS!

WOOHOO!!

 

Could you post your specs?

 

I don't have them here (at work), but I'll try to get them tonight.

 

Same experience as me..except i got mine done for like USD$15 at my mate's shop here in New Zealand...buahahaha...My rear left/right allignments were way off...Now the car feels more planted when cruising in straight line...
Anyways, I kept all factory settings except for the Camber:
Front:
Left.... -1.05
Right.... -1.03

Rear:
Left... -1.14
Right... -1.14

Should be more gentle on the tyres with this conservative setting...
One word of caution though... UNDERSTEER
As long as you know what you are doing...thats fine!

 

Can someone shed a little more light on this subject please? How do I know if my alignment is way off? I don't understand all this changing of camber stuff. How do I know if mine are on the stock factory settings?

 

[QUOTE]Originally posted by 98TypeR#21
[B]So on Saturday, I had an alignment done (to my specs) at NTB - they did a great job BTW.

 

Remember to go back before 6 months or 6000 mile and get it rechecked and aligned if need.

 

[QUOTE]Originally posted by VTEC Racer
[B]Can someone shed a little more light on this subject

 

I had my alignment done about two weeks ago. I went for these specs:

FRONT
-----
L camber: -1.1 degrees
R camber: -1.1 degrees
L caster: 6 degrees
R caster: 6 degrees
L Toe: 0
R Toe: 0

REAR
----
L camber: -2.2 degrees
R camber: -2.2 degrees
L Toe in: 1/8 inch
R Toe in: 1/8 inch

I went to the track last Friday and the car did stick a lot better than the stock setup. At one point I went into a corner too fast and the back end started to slide but it was very predictable.

I will wait and see how much faster the tires will wear due to the additional negative camber.

 

OK - here are the specs I had the alignment done to (and the actual measurements done before the alignment):

Front camber (left and right): -.8 degrees (was -.5L and -.8R)
Front caster (left and right): 5.9 degrees (was 5.6L and 6.0R)
Toe (left and right): 0 degrees (was .13L and 0R)

Rear camber (left and right): -1.8 degrees (was -1.3L and -1.6R)
Rear toe (each left and right): .13 degrees (was .17L and .27R)

Again, this is only SLIGHTLY outside Honda's recommended range, but it definitely made an improvement.

I guess what I'd say is that the S2000 is a very sensitive car when it comes to alignment, particularly with worn tires.



I hope others have as good luck as I had with this VERY inexpensive fix.

BTW - I'm not sure which spec number was causing the twitchiness of the rear-end, but I wonder if it was the Toe difference between left and right (.17 degrees left, and .27 right). Just wondering.

One final thought: I didn't mention it but I'd had a thought that turning (and accelerating) left was much twitchier than when turning right. It could have been weight balance with me driving, but I wonder if it was exacerbated by the rear camber differences between left and right. Again, I'm just glad it's all fixed, but I was curious.