Full lock judder?

[hoyin]

Noticed something new recently.

On a couple of occasions usually coming out of a parking spot I have had to make a full lock manoeuvre at very low speeds and I feel the front wheels juddering.

Feels like the wheel is rotating on a disk that is very uneven. Smooth then rough, smooth then rough.

Any ideas? Doesn't seem normal.

Driving normally everything is absolutely fine.

 

[bigbob]

Cars often 'hop' on their front wheels when you have lock on at low temps on summer tyres. Could it be this?

 

[MAF260]

I've had similar experiences in car parks with concrete floors. I've always put it down to the surface being less grippy than tarmac.

 

[drewf]

Happens with wide tyres on many cars in my experience - I wouldn't worry about it... I've always assumed the tyres couldn't run perfect arcs across all the tread at full lock.

 

[mcs]

Happens on all my cars in the winter unless on winter tyres...must be something to do with Tyre compound. Nothing to worry about.

 

[rs48635]

does it do it when the rack is at full lock?
had it on a previous car, and traced to low fluid level plus incorrect tyre pressures. Cheap and easy fixes are always preferable.

 

[hoyin]

I was told it is due to the lsd.

 

[CatmanV2]

Had it on the GT and the 4200. Noticed it when Felice was getting the car out of his unit and mentioned it. He said it's completely normal.

C

 

[hoyin]

Happens with wide tyres on many cars in my experience - I wouldn't worry about it... I've always assumed the tyres couldn't run perfect arcs across all the tread at full lock.

I think it is this coupled with the lsd which causes it to judder.

 

[CatmanV2]

I think it is this coupled with the lsd which causes it to judder.

GT didn't have one

C

 

[TridentTested]

Feels like the wheel is rotating on a disk that is very uneven. Smooth then rough, smooth then rough.
.

Could it be the tyre touching the wheel arch liner? Mine does that on the near side and it still gives me a fright.

 

[hilts uk]

Happens to me on my GS and I think the same on my old GT and GTS.

 

[Emtee]

My GS does this. If it's the front wheels I'd check tyre pressures, as increasing this solved it on mine. The limited slip diff' is something else which is a soft whine. Also happens on full lock at slow speed. I had the plates turned around, but checking the lubricant helps also.

 

[beau]

yes my maserati and porsche do this, alfa doesnt, probably because it doesnt do 'full lock' !

 

[bigbob]

It's a common problem in winter on low profile summer rubber. Personally I don't see it as an issue other than it tells you you should really be running winter rubber for 3-5 months a year.

 

[safrane]

More pronounced on polished floors ir painted ones.