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Took delivery yesterday of my C2S. It came equipped with Michelin Pilot Sport 4s. The SA seemed to indicate that was a recent change. I was curious about what others have gotten recently. I had about 100 miles highway driving to get it home and was pleased with the interior noise levels on the highway. This was my first significant amount of highly time in a 911 though so really have nothing to compare it to other than hearing negative reviews on that aspect of the P-zeros. Also noticed tread ware rating of 300.
I have limited tire knowledge. Anyone have thoughts on these tires they would care to share?
I notice the door placard shows 35/45 front and rear tire pressures. On the way home once they got warmed up I was indicating 38/48. Will verify the cold pressure today. Any recommendations on general wisdom when it comes to tire pressures on these cars?
^^^ I agree with this. For street driving, there's not much difference in ride quality and performance between Michelins and Pirellis. If anything, ride and noise are slightly worse with Michelin especially if using the older Super Sport.
On the track, however, the Michelin tires have much better turn in response and wear a bit more evenly. But at the limit they break loose immediately, whereas the Pirellis are bit more forgiving. If it wasn't for the livelier on-track feel I would buy the cheaper Pirellis.
My street pressures cold are 32/34 in comfort setting.
My GTS shipped with N1 spec P Zeroes. It seems that Porsche started shipping some cars with Michelins around the December timeframe.
The MPS4 is a superior tire, observably more quiet than the Pirelli and treadware is rated better at 300 vs 220. I will switch out the Pirellis to MPS4 at the next tire change. There are reports that the N1 spec P Zero is noticably improved from the N0, but I don’t have any experience with the N0 tire. As for inflation, follow the sticker on your door and use the TPMS to track, it’s accurate to within 1 PSI.
The P Zero is an excellent tire, the Michelin is just better.
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I notice the door placard shows 35/45 front and rear tire pressures. On the way home once they got warmed up I was indicating 38/48. Will verify the cold pressure today. Any recommendations on general wisdom when it comes to tire pressures on these cars?
For some reason the dealers seem compelled to deliver cars with the maximum "full load" tire pressures. Your ride will be much better with far less than that and will still handle great too.
All of this is explained better in the manual, but in a nutshell: Using the multifunction display, toggle up/down until you find the Tire air pressure display. Push the MFD stalk forward (or click if you have a multifunction steering wheel) to access the menu. You want to switch the tire settings to "Comfort". Then you can use "Fill Info" under this menu to find out how much pressure above or under the recommended setting the tires have. In this case you will see a + reading. Let air out of the tires until the Fill Info readout shows zero on all tires.
The nice thing with using Fill Info instead of absolute pressures is that the computer takes into account the current temperature of the air in the tire and gives you the proper number regardless of whether the tire is hot or cold.
And yes, your car came with very good tires for sport and road use.
My GTS shipped with N1 spec P Zeroes. It seems that Porsche started shipping some cars with Michelins around the December timeframe.
The MPS4 is a superior tire, observably more quiet than the Pirelli and treadware is rated better at 300 vs 220. I will switch out the Pirellis to MPS4 at the next tire change. There are reports that the N1 spec P Zero is noticably improved from the N0, but I don’t have any experience with the N0 tire. As for inflation, follow the sticker on your door and use the TPMS to track, it’s accurate to within 1 PSI.
The P Zero is an excellent tire, the Michelin is just better.
my GTS - (built 1/18) has the PZeros -agree with everything you said and that OP won the tire lottery.
In my opinion they are superior to the Pzeros in noise, Wet handling, and dry. I have switched out my Pzeros to the 4S. Good to see Porsche is going OEM.
For some reason the dealers seem compelled to deliver cars with the maximum "full load" tire pressures. Your ride will be much better with far less than that and will still handle great too.
All of this is explained better in the manual, but in a nutshell: Using the multifunction display, toggle up/down until you find the Tire air pressure display. Push the MFD stalk forward (or click if you have a multifunction steering wheel) to access the menu. You want to switch the tire settings to "Comfort". Then you can use "Fill Info" under this menu to find out how much pressure above or under the recommended setting the tires have. In this case you will see a + reading. Let air out of the tires until the Fill Info readout shows zero on all tires.
The nice thing with using Fill Info instead of absolute pressures is that the computer takes into account the current temperature of the air in the tire and gives you the proper number regardless of whether the tire is hot or cold.
And yes, your car came with very good tires for sport and road use.
Good info. Thanks. Plan to sit down and read the manual later today. To much excitement on delivery day yesterday to crack the books!
tire pressure goes up about 4-5 lbs when hot. On a 100 deg day the tires are about 5 lbs higher on the road. Go get your car hot, tires really hot and let the pressure down to max printed on manual or in that vicinity. In cold weather its hard to keep correct because they dont get up to hot temps
02-25-2018, 10:23 AM
Tires on the car from the factory and questions
