I own a 2003 S2K with about 90K miles on it, no mods - all factory. Recently it started pulling to the left under acceleration in 3rd gear (and above) and pulling to the right when I take my foot off the gas. I've tried to fix this using the following measures with nothing working (obviously):

-Check and balance tire pressure (Duh!)
-Alignment done at dealership
-New tires from Tires Plus (Primewell PZ900)
-Full inspection of motor mounts, front/rear suspension, differentials, drive shaft, etc. done by dealership.
-Currently in the process of getting the tires checked for a 'bad tire' at Tires Plus.

The mechanic who did the inspection at the dealership acknowledged the pull but found 'nothing wrong with anything' and said it was common for this type of car. I don't buy that because it didn't do this for the first three years I owned the car. I then asked him if he would recommend his dealership buy my S2000 after he test drove it on the freeway. His response: "......"

I absolutely love my S2K and I have to get it back and running at 100%. If anyone out there has any thoughts I would greatly appreciate some advice.

 

This may sound like a stupid question, but is the road you're driving on completely flat? Are there any ruts/grooves or anything where the pavement has been worn down from driving over the years? I've noticed my car will do it when the road has ruts in it like that. I believe the term is "tramlining" and it is a common problem. I'm not sure how to fix it. I think maybe a BSK? Not sure... Just my thoughts...

If not, then maybe its something in your suspension?

 

Be sure to double and triple check your tire pressures. Oh and please get rid of the cheap prime well tires.

 

maybe they mounted a rear tire inside out.....ya never know

 

Thanks I'll double check the pressures. If nothing else works, then it's gotta be the Primewells. Hindsight being 20/20 I shouldn't have taken the risk with the crappy tires, that's what I get for trying to save a buck.

 

The road is completely flat, and it's less of a steer to the left and it is more of a pitch.

 

Have you ever a spare tire on the rear axle?

 

prime wells are the cheapest tires ever. Get a good set of tires. leave the primewells for the hoop rides

 

Negative

 

Sounds like one of two things:

1. Something is wrong on the driveline off the diff, where one side is getting all the power on-load and forcing the car to pull one direction; whereas when off-load, the car veers the other direction because the same side has now in more friction somewhere and is slowing that wheel down too much.

2. Something is loose or bent on suspension component. When on load, the geometry changes enough to cause toe-out on a wheel....off-load, the suspension geometry begins to change back to normal and maybe even toe-in causing the car to veer the opposite direction.

Try this, get in the car and put it in reverse. Does the car change direction in reverse...if it does, what direction does the car go on load? Does it change direction when you get off the gas? If so, what direction?