Either way,you should be happy,and if it's the stock Bridgestone's you're replacing,ANY of the tyres mentioned are better.
Cheers for all your help and advice S3Alex and everyone :)
Everyone here has been so helpful in showing me how to part with my money,that it's only fair I help others to do the same!
If you opt for a 88Y
instead of the Audi fitted and recommended 92Y XL
if you have a crash, won't the insurance have an issue with a tyre that isn't specified by the manufacturer?
So whilst you know the static load of the front end of an Audi S3
Do you know what the Dynamic load of the front end of an Audi S3, 3 passengers and driver, luggage, under full emergency braking from 155mph, on a dry road ambient temperature of 40 degC?
Might the insurance company have a case for not paying out if you have fitted 88Y tyres that are not XL rated?
The other side is that both sets of tyres are Y-rated,and the load difference amounts to 70kgs.
I'd need someone with a better knowledge of physics and tyre load margins to work it out for me,but in your illustration of course,you'd be prosecuted for the speed alone!
I'm just extremely wary of insurance companies finding the slightest excuse not to pay out.
We already know that they will refuse a payout on non "N" rated tyres for Porsches
With XL rated tyre, it's more than just the load in kilograms.
An XL tyre fitment as standard makes sense on a S3. With a low profile tyre, there isn't much of a sidewall. An XL tyre has reinforced sidewalls to cope with the additional lateral cornering dynamics, and enables the tyre to run at a higher inflation pressure to cope.
A non XL 88Y tyre, whilst having a lower static loading, hasn't got reinforced sidewalls!
Interestingly, a XL tyre inflated to the same pressure as a non XL tyre has a lower load capacity. A XL tyre must be inflated to, and run at a higher pressure than a non XL tyre to achieve the same load capacity. This explains why recent 8P's run at 42psi on the front.
At the end of the day, if a car/tyre hasn't been homologated by the manufacturer, the insurance company may seek to exploit this :(
It does state on most policies that the car must have tyres fitted as recommended by the manufacturer.
There certainly enough noise on the Porsche Forums that indicate this is a problem area with compliance.
Has your more than one friend with Porsches actually had a claim paid out with non N rated tyres?
*Nevertheless, N ratings are more to do with compound, XL ratings are to do with load dynamics and construction!
I wont hijack anymore, but suffice to say.
Claims, yes paid ok, no mention on the policies I've had for the last 12 years, and the N rating cannot be applicable for all Porshces, as they are only tested on current models, so if you have an old one, then the charateristics are not always applicable.
N types are also construction and compound related, at least that is what the Michellin engineer infomred us on a talk a couple of years ago regarding tyre manufacture and testing..
Policy wording (I'm sure most policies state this):
. Modifications to your car
You must tell us what modifications you intend to make and obtain our agreement prior to making them. Modifications are changes to your car’s standard specification, including optional extras. These include, but are not restricted to, changes to the appearance and/or the performance of your car (including wheels, suspension, bodywork and engine).
Failure to provide correct information or inform us of any changes could adversely affect your policy, including invalidating your policy or claims being rejected or not fully paid.
At the end of the day, it's your risk, your car, your insurance, your life! But I still fail to see why you would use potentially weaker non XL tyres on a high performance car (away from Standard Specification).
I may need new tyres and like Conti as a brand. Have done a quick search and was wondering if anyone knows the difference between these two and why the wet weather rating differs?
Could be glitch on website as just did a quick search.
At first glance it looks like the left tyre is a manufacturer specific tyre MO = Mercedes Original
These links will help:
Speak fluent ‘tyre’ in one minute | Tyre Basics | | Learn and Share | MICHELIN
Mercedes 'MO' Rated Tyres
Conti 5 it is folks
They make an Audi specific Conti 5 which has different ratings too. Let us know which ones you go for.
I too need 4 Tyres for my 2007 S3. Going for PS3 at a cost of £111 each including postage. Getting them fitted at WIM along with full alignment :)
225/40/18 by the way
Hi its a site for forum members so you will have to ask for a login but heres the link for them tyres...https://www.tyrefactors.com/tyresear...&marque=&other
Contis are here https://www.tyrefactors.com/tyresear...marque=&other=
Price difference of £5 or so
I gave ordered from them before with no problems for my lexus. Going to order 4x PS3 this week
I thought it might be of interest to anyone looking for PS3's that in some Michellin garages are offering £50 cash back before the end of the month, mine are £127.50 fitted at a local garage, with the £50 back, thats £460 the set...