tyres - N2/N3

[phlize]

I've just been quoted for Michelin Pilot Sport 2 in N4 spec??!! So is N3 now old hat?? Does anyone have the Michelin number. My concern is insurance - as said above - any excuse!!

Porsche leaflet, picked up off the rack in the local OPC, "Tyres for your Porsche" edn 12/05 says " All Porsche cars should be fitted with a full set of the same tyres and 'N' rating in order to maximise the vehicle's performance. Mixing different brands, patterns or 'N' numbers - even from the same manufacturer - could result in an increase in road noise and significant changes in handling, compromising the car's active safety features." My italics.

So, if you did mix etc & gave your friendly insurance company a call to ask if it was ok - what do you think their response would be??????? No, I don't think I'll bother either.

 

[JCB..]

ORIGINAL: phlize

I've just been quoted for Michelin Pilot Sport 2 in N4 spec??!! So is N3 now old hat?? Does anyone have the Michelin number. My concern is insurance - as said above - any excuse!!

Porsche leaflet, picked up off the rack in the local OPC, "Tyres for your Porsche" edn 12/05 says " All Porsche cars should be fitted with a full set of the same tyres and 'N' rating in order to maximise the vehicle's performance. Mixing different brands, patterns or 'N' numbers - even from the same manufacturer - could result in an increase in road noise and significant changes in handling, compromising the car's active safety features." My italics.

So, if you did mix etc & gave your friendly insurance company a call to ask if it was ok - what do you think their response would be??????? No, I don't think I'll bother either.

Would ring your insurance company for advice on what oil to use? [&:]

 

[Black80XSA]

ORIGINAL: phlize

I've just been quoted for Michelin Pilot Sport 2 in N4 spec??!! So is N3 now old hat??

different sizes might have different n numbers - there might be more changes on 17s than 18s or 19s .

 

[phlize]

ORIGINAL: JCB..

ORIGINAL: phlize

I've just been quoted for Michelin Pilot Sport 2 in N4 spec??!! So is N3 now old hat?? Does anyone have the Michelin number. My concern is insurance - as said above - any excuse!!

Porsche leaflet, picked up off the rack in the local OPC, "Tyres for your Porsche" edn 12/05 says " All Porsche cars should be fitted with a full set of the same tyres and 'N' rating in order to maximise the vehicle's performance. Mixing different brands, patterns or 'N' numbers - even from the same manufacturer - could result in an increase in road noise and significant changes in handling, compromising the car's active safety features." My italics.

So, if you did mix etc & gave your friendly insurance company a call to ask if it was ok - what do you think their response would be??????? No, I don't think I'll bother either.

Would ring your insurance company for advice on what oil to use? [&:]

If I thought there was the even the remotest possibility of them declining an insurance claim that could bankrupt me, on the grounds that the oil I was using was specifically against the manufacturer's recommendation------ then YES!!! Or, as I implied - I'd stick with the recommendation of the manufacturer because I KNOW insurance companies will use any excuse to duck a claim - especially if it's £loads!!! Hence, no point in asking.

 

[burrow01]

Just been discussing this on Pistonheads, and I was very surprised that my manual did not say anything about N rated tyres, despite recommending Porsche valve stems

What does it say in the Boxster manual regarding N rated tyres?

rgds

Pete

 

[phlize]

Pete,
Mine's a 2007(Oct) 2.7litre, 987. On page 187 of the handbook it says - and this is printed in bold typeface:-

"Basically, only tyres of the same make and with the same specification number (e.g. "N0", "N1" ...) can be fitted. "

This comes under the paragraph headed "Replacing tyres". This is a pretty firm statement, reinforced by the use of bold type.
It's interesting that they don't use the word 'recommend' as they do in a later paragraph relating to the use of winter tyres if the temperature falls below 7 deg. C.

Maybe they have only been so dogmatic for the later cars??

 

[Mark_Bennett]

Says exactly the same on pp147 of my MY2001 Driver's Manual.

 

[berty987]

I don't see many porsche drivers running winter tyres over here in the Uk , even though we have some cold weather and sustained periods of temperatures below 7deg C. The N 2 /N3 issue is probaly going to make as much difference as new tyres on one axle versus part worn on the other. The different handling characteristics may be exaggerated from different N numbers if one axle has part worn whilst the other has new tyres. So long as you dont expect to extract the maximum performance from your car straight away and can relearn the new balance , I do not see there being an issue. After all , the front and rear tyre widths are different anyway, so the car has a different grip bias in dry and wet conditions.