Why is mah car twitchy

[JClark]

@Ilya

Isn’t bump steer the act of the car jerking/twitching when the wheel goes over a decent sized bump (such as the some of the grooves in the road on I-787 S just past downtown)? I had this sensation on the Maxima and then I replaced the suspension with a lowering one (and it happened to take care of the issue). I now have it on the M. It’s much more pronounced when the wheel is ever so slightly turned.

If I’m wrong, then I retract my previous post. The idiot who coined the term should have come up with a better set of words to describe whatever bump steer really is so not-so-technical car enthusiasts like myself don’t look stupid on forum such as this fine one :rofl. To me, it just means that when you hit a bump, the car tends to steer itself (such as twitch, jerk the wheel).

That’s not bump steer, that’s a bad alignment.

Bump = suspension compression, not a bump in the road. Cornering load causes suspension compression which changes toe (steer) PER corner.

If the car is twitchy, usually your alignment is screwed up, bushings are worn, or you put on some dumb ass tuner suspension and drive around all hellaflushpoke or all 3.

Rarely do the rear ends of modern cars (insert 1st gen MR2 joke here) exhibit true bump steer when lowered.

Krammer more likely has worn bushings that are allowing the suspension geom to change under load. Early 2nd gen MR2s had this from the factory, so I wouldnt rule it out, and his is like 30 years old.