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Old 03-02-2009, 11:08 AM   #1
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Michelin Pilot Sport Recommendation

I have an 02 986 with Michelin Pilot Sports front and rear. I need to replace the rears, so I'd like to know if anyone would recommend replacing the rears with Pilot Sport A/S's as opposed to the standard Pilot Sports. The fronts would remain Pilot Sports.

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Old 03-02-2009, 11:14 AM   #2
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http://www.tirerack.com/tires/tiretech/techpage.jsp?techid=136
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Old 03-02-2009, 12:36 PM   #3
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+1...don't mix and match.
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Old 03-02-2009, 05:28 PM   #4
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Cool Pilot Sport comment

I went through this last year when i needed new tires for the rear.. i still have the original Pilot Sport for the front of my 04S, installed two new Michelin PS2's for the rear, and they're fantastic... no issues.. aligned and balanced you're fine.
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Old 03-03-2009, 06:09 AM   #5
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Quote:
Originally Posted by t2-bxtrs
I went through this last year when i needed new tires for the rear.. i still have the original Pilot Sport for the front of my 04S, installed two new Michelin PS2's for the rear, and they're fantastic... no issues.. aligned and balanced you're fine.

Thanks for the reply. I see the Pilot Sport and PS2 have drastically different designs. Also, the Pilot Sport and Sport A/S design is similar.
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Old 03-03-2009, 06:13 AM   #6
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Thanks for the info. Please excuse my lack of understanding with these issues. Some replies I've gotten say to never mix tires, which leads to my next question. We all know the rears wear out faster than the fronts. If you don't replace the fronts the same time as the rears, even if I replace the rears with the same tire type, since they would have 100% tread and the fronts would have (say, 75%), wouldn't this be (in theory) the same as mixing tires?

Again, thanks in advance for recommendations and advice.
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Old 03-03-2009, 06:32 AM   #7
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"We all know the rears wear out faster than the fronts. If you don't replace the fronts the same time as the rears, even if I replace the rears with the same tire type, since they would have 100% tread and the fronts would have (say, 75%), wouldn't this be (in theory) the same as mixing tires? "

Not quite, the fronts still have the same tread pattern, sidewall stiffness, rubber compound and such. I can go through three+ sets of rears to a set of fronts. Every time a new set of rears (PS2's) go on the car the whole car feels nice and sticky again....

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Old 03-03-2009, 07:01 AM   #8
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What are you trying to achieve

by putting A/S tires on the back...are you trying to transition to all A/S? Or imitating the old "put snows on the driven axle only"? What weather do you drive in that you are considering A/Ss?

Can you get away with it legally in the US? Yes. If the car is just an around town car and you don't track the car will it screw things up? No. But if you ever have to call on the car for all the handling it is capable of giving you (on the track or in an emergency situation), will the axle mismatch be troublesome? Could be. You are putting tires on with differing water dispersion characteristics, different sidewall flexs, different tread grip and depths. So in a situation where Porsche has designed the car and its suspension and how the suspension works with the tires to do A, your axle differences may cause the car to do B. Might help you, might hurt you bad.

My first Boxster had Pirelli tires which were of different designs for the front and rear but they were specifically designed to work together and their handling characteristics were safety matched even though the tread patterns were different.

I totaled my car because I was driving it one day when the temperatures were too cold and I needed to stop fast and the tires wouldn't grip. Didn't have anything to do with the mismatch, just using the summer tires on too cold a day. Which brings up the point that you'll have, in 40 degree and below temps, if you A/S in back and Ribs or PS2s in front, a situation where you have more grip in the cold in back than in the front. Can you handle the mismatch as a driver? Go into a corner and try to turn and the front end doesn't but the rears grip. Or can you avoid this situation by never driving in those conditions (I was only going to the store, not on any high speed excursion? You just never know when you are just gonna have to do it NOW)

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