here we go;;;;
http://www.tirerack.com/tires/tirete....jsp?techid=26

a good read for all. Esp the last paragraph. If I read it correctly it should settle in.

 

Try reducing the pressure to 34 front 38 rear. This will give a slightly larger footprint on the pavement and possibly more stability.

 

I would not do that. You will get a larger footprint for sure, more consumption, LESS stability and less precision and you may run into the risk of overheating your tires and exploding them.

Use the recommended pressure on the door sill, for God's sake.

Yves

 

Thats to funny

 

and,
http://www.tirerack.com/tires/tirete...e.jsp?techid=5

 

That's general input when it comes to tread depth character. Tirerack sells high mileage passenger tires too with loose deep treads which will flex more when newer and perhaps add to vague handling. Summer tire treads are far less flexible, far more sticky, and adhere better when new than old. But spot on reference the break in period, although most "experts" don't speak to 500 miles. That seems rather excessive. In fact, per Michelin website, "a break in period of a few miles should be observed. Hard cornering and braking should be avoided during this time." 50~100 miles is plenty enough.

 

Depends on which Carrera. 997.2 cold pressure setting between C2 and C4 cars are not the same. 18" and 19" tires are slightly different cold pressure settings as well for C2 cars. 19" cold pressure setting listed below for "N" spec tires. Always set cold. Hope this helps you.

C4,C4S, Targa4/4S 19" Wheels (Summer or Winter Tires):

Partially Loaded (2 ppl w/o luggage) cold
Front 34 psi, Rear 37psi

Fully Loaded (2ppl w/luggage) cold
Front 37 psi, Rear 44 psi

C2, C2S 19" Wheels (Summer or Winter Tires):

Partially Loaded (2 ppl w/o luggage) cold
Front 34 psi, Rear 40 psi

Fully Loaded (2ppl w/luggage) cold
Front 37 psi, Rear 44 psi

 

Thanks, I m kinda set right in between the two for the C2 with 19s.

 

All good. Also, it has been my experience, that N spec summer compound Pirelli tires have an "unplanted" road feel when the ambient temperature drops below 50 degrees F.

Pirelli claims at those lower temps suffient heat can not be generated to appreciably soften the summer compound that becomes brittle in the cold. This can change the composure of a Carrera significantly as compared to regular warmer ambient temperatures. This may be the feeling you are experiencing. There is more about this on the Pirelli site.

 

LOL you should read the yellow sticker adjacent to the above mentioned door sill sticker

 

I agree.

 

Thanks to all. Got about 300 miles now and it s still noticeable, then again, it was 40 degrees as a high today.... I am ok with just letting them settle in and then I can report back to you all.

 

As mentioned before, check the pressure, direction, etc...but also very importantly, tires need a break-in period until they finally start gripping properly. What you describe may be somewhat normal up until 200-400 miles after you have used them.

 

It's the temperature. I just put my summer tires on and my car is doing the same thing on roads where the surface is not even. My winter pirellis did not exhibit this and these are the same summer tires I had last year. It's just the time of year and temp most likely.

 

Ditto...my awd audi just got the summer setup back on and im in the 40s... its wandering in the front end. All temp related. Im a couple pounds less pressure than the door as im the only in the car most of time.