Menu toggle

981 noise from front wheels at full lock

Aliberg

Aliberg

New member
I have just bought a 981 and love it! But the front wheels seem to be either rubbing or knocking some thing when turning at full lock. Is this usual?
 
Yes, it is normal. Called the Ackermann effect I think, something to do with the suspension geometry.

D
 
Check wheel arch liners for signs of rubbing, but my car will judder on full lock coming off my drive .... combination of cold, wide tyres and extreme steering angle. It is like they are skipping sideways across the block paving. My van also does it, also wide tyres.
 
I used to have this with the PZero N0`s, now that I have the Michelin PS4S N0 the `scrubbing` has all but disappeared.
 
Yes they (981's) all do this. I'll be changing my Pirellis for the Michelins soon, so will be interesting to see what happens.
 
Same with both our 981's, on full lock when manoeuvring slowly they both did this, as already mentioned not a problem just the way the car is set up, I don't think the tyres are actually rubbing or catching on anything its just the feedback from them as they sort of jiggle whilst on full lock.
 
The outside of the tyres have further to travel than the inside of the tyres when following a curve. At slow speeds, with wide tyres & a very tight angle, something has to give, so the insides have to skip along. That's what you're probably experiencing.
 
mr pg said:
Yes they (981's) all do this. I'll be changing my Pirellis for the Michelins soon, so will be interesting to see what happens.
Click to expand...


I'll correct you slightly and say the Pzero N0 does this, not the 981.
 
When I bought my first Porsche, a 987.2 Boxster in December 2015 I too had this noise which I too was concerned about.
I contacted the indy I bought it from and I was told its normal, yes the Ackermann effect.
After 15 months, I changed the 987 for a 981 and this one does it even more than the 987 (19' tyres/wheels as opposed to 18").

Strangely, my son had a 2013 981 Cayman which was involved in a low speed accident but a lot of damage to the front end.
Front end was all rebuilt by a well known well recommended specialist and I assume after the rebuild the suspension geometry was 4-wheel laser aligned.
After that, my son reckoned he very rarely got the "acckermann effect" noise.
 
it's tyre hop that all, and yes it's the Ackermann effect but as the p Zero have zero grip (I think that what P Zero stands for) zero grip !! the wheel hops

fit a nice tyre and the wheel does not hop.

I have 4 porkers and have 9 in total the only car that does this again is my 981 SPyder with the p Zero shit on them ! again !!!
 
You must log in or register to reply here.

Posts made and opinions expressed are those of the individual forum members

Use of the Forum is subject to the Terms and Conditions

Disclaimer

The opinions expressed on this site are not necessarily those of the Club, who shall have no liability in respect of them or the accuracy of the content. The Club assumes no responsibility for any effects arising from errors or omissions.

Porsche Club Great Britain gives no warranties, guarantees or assurances and makes no representations or recommendations regarding any goods or services advertised on this site. It is the responsibility of visitors to satisfy themselves that goods and/or services supplied by any advertiser are bona fide and in no instance can the Porsche Club Great Britain be held responsible.

When responding to advertisements please ensure that you satisfy yourself of any applicable call charges on numbers not prefixed by usual "landline" STD Codes. Information can be obtained from the operator or the white pages. Before giving out ANY information regarding cars, or any other items for sale, please satisfy yourself that any potential purchaser is bona fide.

Directors of the Board of Porsche Club GB, Club Office Staff, Register Secretaries and Regional Organisers are often requested by Club members to provide information on matters connected with their cars and other matters referred to in the Club Rules. Such information, advice and assistance provided by such persons is given in good faith and is based on the personal experience and knowledge of the individual concerned.

Neither Porsche Club GB, nor any of the aforementioned, shall be under any liability in respect of any such information, advice or assistance given to members. Members are advised to consult qualified specialists for information, advice and assistance on matters connected with their cars at all times.

Porsche
Lockton
Pirelli
Officially approved
Oracle Finance
WEX Esso
Collecting Cars
Archant Dialogue
Back
Top