Wheels slipping when hard lock turning - dealer says this is normal?

[eskiepeskie]

Hi there, hoping someone can help me. I had a search and couldn't find any related posts but I'm not really sure what I should be searching for to be honest!

I bought a used Toyota Yaris 1.3 (2007) about 7 weeks ago from a Toyota dealer. It came with a 60 day warranty - I had to return it to them to have the front suspension arms replaced as the bushes were cracked. They covered this under the warranty.

After getting it back from having the suspension arms replaced I have noticed some strange behaviour when turning at very slow speeds, it only happens when I have the hard lock on so as this doesn't happen all that often I can't really say whether it was doing it before or not.

If turning with the hard lock on I can feel the car judder or shake and also feel it through the steering wheel. I've also had someone look at the car when I am turning and they can also see the car visibly shake. This happens when I am turning left or right.

It feels similar to the sort of feeling you get when turning on ice - as if the wheels are slipping. It feels like I don't have proper control of the car. But it only happens when turning very slowly - normal driving everything feels fine.

I took it to the dealer again to have it looked at and they have told me they have checked out everything (suspension, steering etc) and everything looks fine. When I demonstrated the problem to them they said "oh that's normal!" and said that in newer toyotas when turning more power is put in to the lighter wheel (I think he said when turning left, more power would go to the left wheel) to help with turning and this is what it happening with the juddering.

I was hoping someone could confirm if this is indeed the case? I can't find anything on google about it and I am concerned that they are just trying to palm me off since I am on the last week of my warranty! Any help would be much appreciated :)