Hi, I have noticed that my w203 squirms a lot when under acceleration. i've only had it a few months but have had no serious issues. i have replaced all 4 tires, and the alignment is perfect. i have also inflated the rear tires to about 3-5% psi under their recommended max. i do hear a slight squeak that is possibly the rose bush or something but would that really cause squirm under acceleration? when accelerating the car would squirm / fish tail slightly or rock. it stops as soon as i stop accelerating. any ideas what this could be, mechanics seem reluctant to investigate it. Thanks in advance

 

I sure hope you do not mean the max on the side of the tire. If so thats the problem.

 

sorry i didnt mean to add the '%' symbol. The max was 50psi and i inflated it to 45psi but the squirm remained.

the psi was originally 35psi and i read that increasing the psi should fix the squirm. this is why i inflated the tire to that.

This hasnt fixed the squirm so has anyone else had this problem or knows of how to fix?

again thanks in advance.

 

https://mbworld.org/forums/c-class-w...n-limiter.html - background info.

Can you possibly film the tachometer and the speedometer while the car does that?

 

Hi sorry for the delay in replying, i wasnt sure on how to upload videos.

I dont know what this will tell you about the squirm but here is a link to the video:

https://dl.dropboxusercontent.com/u/53888633/20160808_182318.mp4

The entire time the car is accelerating there was squirm. Also i notice that the squirm is constant at higher speeds of 60+ mph and only goes away when i remove my foot from the accelerator (ie holding a high but constant speed and goes away when i begin to slow down).

I'm not sure if this is related but going around round-abouts and sharp corners, no matter how safely, the car will begin to slide. i have to resort to going extremely slow to prevent it from happening to the annoyance to other drivers!

could this all be a differential problem?, i don't hear any noises that suggests it might be.