Rear tyres - 987S

[DavidB]

Hello all!

The rears (Michelins) are down to 3.5mm after 9.5k miles and the OPC is recommending replacement at 3.0mm. I've had the car from new and this will be the first tyre change, so I've got nothing to compare to, but is this level of tyre wear normal?!!!

I drive it reasonably quickly, but most of the mileage is urban commute and motorway with the odd A / B road blast. Its never been near a track!

I've got TPM fitted - do I need to get the tyres changed by the OPC or can the Indies cope with it? I don't want to save a few quid only to find the TPM doesn't work.

Cheers in advance.

David

 

[DavidB]

Should have said - standard 18" wheels & tyres

 

[911sse]

Thats about twice what I get on the Pirelli's but its driven hard

 

[Black80XSA]

I changed my 19" Michelin rears at 16k miles - they were about 2.5mm by then, do similar type of roads to you.

I'd be tempted to keep usign them, 3mm is a German ruling, in the UK the minimum is 1.6mm. DRive accordingly in wet/damp conditions and your surrent tyres will see you through another 2-3k miles. (a new tyre is between 8 and 9mm so you are averaging 2k miles per mm of wear)

 

[akwaugh]

Just to prove I read Porsche Post, there's a piece in it about TPM - which I didn't know a thing about before I read it - which advises that the clever stuff is in the valves themselves. Apparently what some folk do is have their local tyre fitter change their tyres and of course valves too. Bad idea. See Porsche post for more or wait until I find the relevant page when I re-read to get the bits I missed!

Hope this helps

 

[akwaugh]

Hi again,

The info you need is on page 39 in Porsche Post, along with a pile of other great info on Porsche options. Worth a read.

Also, if you're thinking of changing your tyres at 3mm why not either take the car to a track and finish them off or sell them as track tyres? Don't know what anyone else might think of that but it would seem a waste just to throw them away. I'm in the fortunate position to have some wheels and tyres for those odd occasions when I can get out to a track but if I wasn't then I'd think about how to do it without bursting the bank on new tyres.

Andrew

 

[Black80XSA]

Whenever you change them keep the best front and rear tyre, just in case you have puncture and cannot source a replacment tyre at short notice.

 

[mikec]

Aren't certain tyres directional with the outside marked so keeping the best one would only work for that particular corner. To cover yourself for a puncture then you'd have to keep them all. Sod's law would dictate that if this was the case you'd ahve a puncture on a tyre you didn't have. Although I'm sure the tyre would be ok for a few days, if anything was to happen the insurers would likely use that as an excuse to refuse payout.

 

[Black80XSA]

My MPS2s are not directional, just assymetrical

 

[DavidB]

Many thanks for the advice - if we get a decent summer (!!) they'll hopefully last until the weather gets really bad ('round about the end of August!)

On the other hand, maybe just one track day.....