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2 Front Tyres Needed. Where?

Thanks ok so that ends one story they are the right size then :)

Now to decide whether to go for Rosso and save trying to sell rears and go Michelin all round, think I might have to opt for the Rosso option, but this means getting prices all over again :) DAMM IT. Is it a particular P Zero Rosso N??? so these are to go with the assemtrico's on the rears.
 
ORIGINAL: jeegnesh

Thanks ok so that ends one story they are the right size then :)
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my question concerned the rim sizes to be honest - i've since noticed your car is a 1997 model. So the wheels have been fitted later, as those wheels only became avialable around the time of the facelift in 2003.

I think you may be running wider than normal rear rims (not the tyres, just the rims) which might explain why the rims sit a little outboard of the tyre wall - do you have any numbers stamped near the tyre valve - something like 9 and 50 ??

I suspect you are using 9.5 / 10 inch rims from either as 996 or they are replica wheels.


Either way that doesn't sort your tyre issues - matching tyres all round is recommended but not in tablets of stone - only you can assess how you drive the car (hard or gently, twisty roads or mainly motorways and big A roads, etc etc) and hence decide on whether to change 2 tyres or 4. I would personally try to find some Pirellis to match or come close to matching the rears you have, but bear in mind the rears will be due a change in 12k miles, so you need to ensure you will get a match at some point in the future (ie make sure matching rears are available).

PZero Rosso are a good tyre, but not the longest lasting. Michelins on the front should be good for 20-22k miles.
 
Yes, I would concur over the type of tyres.

Longevity will definately be apparent if you have Michelin tyres. I can't comment on how much more longer they will go above and beyond the Pirelli's but I've had 2 sets of fronts that have each lasted to 25k, and a set of rears that has gone to 24k without missing a beat and only then coming to the minimum legal level of tread.

I know your wheels and tyres are totally different to mine, where I have the reinforced tyres with added rim protection so that they extend over the edge of the rims (as with Black80SA) but yours do seem to look a little odd.

If they are original 18" carerra wheels then the numbers should work out correctly and your 265/35/18's should be correct. They do look odd though.
 
This is a guide only - there might be an updated version somewhere, but found nothing in the tech articles section ..

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may be running wider than normal rear rims (not the tyres, just the rims) which might explain why the rims sit a little outboard of the tyre wall - do you have any numbers stamped near the tyre valve - something like 9 and 50 ??
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Had a look I can't see anything there.

Yes I was told by the previous owner, they were replica's and choosen because he wanted that wheel and these replica's did not need any adjustments, just fit straight on.

So I am tempted to let the fronts run down right to the legal limit (which is a pain as they make noises which makes you think your bearing are going) then change up fronts to Michelins and from what most of you are saying, it won't be long before the rears will need changing, and then I can match them up. I guess I should take it easy on the mix and slowly figure out there limits or not.

By the way, want to thank you all for the great information, you got to love forums :)


 
ORIGINAL: Mark Bennett

Porsche and the tyre companies spend vast sums of money and considerable time testing the tyres in all conditions, they wouldn't do it if it didn't really matter what gets thrown at the car in the end.
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Oh I don't know, a friend of mine was a senior chassis engineer for TWR and said tyre testing days were a hoot [:D]
 
I hate say this, but the tyres currently fitted to your current rims look wrong to me. I looks like some somes bought wider rims and used under sized or the original tyres [:-] ..........If this is the case, this could have a serious effect on grip if you start pushing the car into corners etc especial in the wet.......... I personally would get some expert help to look at and measure the rims and then start hunting for the correct size tyres. It's a performance car after all and you cannot mess with tyres ......... [8|]
 
Thanks, I have a service at Northway next month so I will start by asking them, they have seen enough Porsche's :)
 
Had my service done at Northway and asked about the tyres. The tyre sizes are correct its just the rim itself has a big lip on it, thats a relief.

So originally I had noise which I thouht might be wheel bearing, then later someone mentioned in another thread that Pirelli can be noisy when the tread runs low, but last week the noise was way to loud to be tyres, and indeed both rear wheel bearing had gone, they were changed and its running real sweet again.

So am gonna stick with the original plan and run the Pirelli down to the legal limit, so that the rears will need changing soon after.
 
Glad you have some confirmation and relief over the rims n tyres.

The Rossos do tend to have a bigger rim protection band on them than the Assimetricos, so that will also explain the slightly different looking tyre walls. I suspect you have 10" wide rear rims so they will also reduce the amount of side wall bulge on the tyre as its stretched across a wide distance from inner to outer tyre bead.

 
If you haven't sorted this out yet, I can recommend Event Tyres who fitted two 285/30/18 N1 Pilot Sports to my GT3 on Monday - they came to me on the right day at the right time, did a perfect job and were extremely competitive on price ie. the cheapest.
 
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