Winter tyres f**king up handling
Discussion
Got Pirelli Soto I's on the front (tyres are one year old and fitted them for the second year running) and had New Pirelli Soto III's fitted to the rear as the Original Soto 1 rears didn't fit (changed from 991S to 991 50th and the rear wheels are a different size)
Handling has gone to s
t (talking at 30mph plus) - car feels like its on wet mud, no feel, cambers in the road pulling it all over the place etc. Going back to the tyre fitters tomorrow but any ideas out there ?( Checked they've been fitted right in terms of rotation direction and they're all correct, Ican't believe there's a compatibility issue between I's and III's on paper but can't think what else it could be, the Soto I's front and rear on the previous car felt fine)
Handling has gone to s
t (talking at 30mph plus) - car feels like its on wet mud, no feel, cambers in the road pulling it all over the place etc. Going back to the tyre fitters tomorrow but any ideas out there ?( Checked they've been fitted right in terms of rotation direction and they're all correct, Ican't believe there's a compatibility issue between I's and III's on paper but can't think what else it could be, the Soto I's front and rear on the previous car felt fine)Almost all Porsche winter tyres are a size down on the 911 range.
Your running a wide body chassis as per the 4s.
A 4s has a size down, so a 50th Ann car probably will as well.
I'm guessing your tyres from last year are 295/30/20.
If so, put them on.
I am a great believer in N rated tyres, and stick to Porsche rules......
Others on here don't, that's fine by me, I don't preach.
Are your tyres N rated?
Your running a wide body chassis as per the 4s.
A 4s has a size down, so a 50th Ann car probably will as well.
I'm guessing your tyres from last year are 295/30/20.
If so, put them on.
I am a great believer in N rated tyres, and stick to Porsche rules......
Others on here don't, that's fine by me, I don't preach.
Are your tyres N rated?
oddball1973 said:
I'll check sizes in the morning, surely the winter tyre should be the same size as the summer tyre though?
This suggests winter and summer 'tire' size are the same for 19 and 20" wheels: http://www.porscheownersmanuals.com/2012-911-carre...SS7
shoestring7 said:
oddball1973 said:
I'll check sizes in the morning, surely the winter tyre should be the same size as the summer tyre though?
This suggests winter and summer 'tire' size are the same for 19 and 20" wheels: http://www.porscheownersmanuals.com/2012-911-carre...SS7
Narrow body chassis do generally use same tyre sizes.
50th is a wide body, and therefore generally run a sizedown
If there is an i manual for the 50th it will tell all.....
When I stick the winter wheels/tyres on my wife's BMW 1 series there is a noticeable different in lateral grip in the dry until it is 'cold' - no apparent issues in the wet. I've always put this down to the narrower profile of the winter tyres and that winter tyres are supposedly designed for temperatures under 7C.
Mad March Taffy said:
When I stick the winter wheels/tyres on my wife's BMW 1 series there is a noticeable different in lateral grip in the dry until it is 'cold' - no apparent issues in the wet. I've always put this down to the narrower profile of the winter tyres and that winter tyres are supposedly designed for temperatures under 7C.
Winter tyres have deeper tread so you'll also feel feel the tread blocks moving around. Similar to having proper off-road tyres on a bike.SS7
Read this post with interest as I put Pirelli writers on my 997 C4S a month or so back and was surprised how useless they were initially. Ditto all the comments above they clearly also need some miles to bed in and also the correct temperatures.
Glad you found your solution. Happy motoring through this bitter winter! ;-)
Glad you found your solution. Happy motoring through this bitter winter! ;-)
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