so what exactly does a bumpsteer kit do?

 

Bump steer is a sudden change in a wheel's toe angle as the wheel rises from a bump in the road. This sudden toe change causes the car to steer without the driver giving steering input.

Our car primarily suffers from rear bumpsteer. This causes the feeling of the tail end dancing when cornering on a rough road.

The bump steer kit changes the suspension geometry slightly by replacing a suspension link to reduce changes in toe.

 

But haven't there been arguments as to whether they work or not?

 

They work... Check out maxrev's review at maxrev.net.

There are 2 ways to reduce BS in the rear. Using the joint's like maxrev or using the extended rear toe arm like the TCD kit.


I think you are talking about the driveshaft spacers.

 

Gotcha, thanks for the info

 

Would these (I am thinking of the T1R rear kit) do much for a stock ride height car, or one lowered maybe just 1/2" max?

I am thinking of coilovers (PSS9, but not sure I want progressive springs) and the Gendron FSB and I am wondering if I can improve stability that much more by using the T1R rear kit. This would be primarily for optimal track setup (not pure out racing monster) with some AutoX and of course normal street driving. The drop, mandated by bad roads and many speed humps, will not be more than 1/2" or so, 25" fender to ground is what I am thinking.

 

Is there a front bumpsteer kit available? My problem is that the cars lowered with larger wheels and many of the roads around me have grooves in them from larger vehicles. It makes it hard to stay centered on the road at higher speeds. Im literally fighting the steering wheel to stay in my lane.

 

This sounds like tramlining to me, which is a different issue altogether.

I believe that has to do with the camber of your wheels and also to do with what tires you have. I could be wrong however, so someone correct me on this if I am.

 

Tramlining is usually related to toe-out. I don't know what kind of alignments people run on s2k's but on wrx/sti's when you run an alignment w/toe out you usually expect to have a bit of tramlining. If you run an alignment with zero toe or toe in, the car will track straight for the most part.