I would not put on any other tires but Michelin PS2 on my porker. These are the N rated ones too and they perform brilliantly in all conditons and compliment the power of the 911 turbo like a duck to water.

I've used them mostly on the road and I've managed to get 6-7 track days there much gripper on the wet than on a dry day and on the track after 6 laps on a dry day the tires start to handle badly and unpredictable over all I had a number of spins which caused damages to either damper or wheel and tire costing me more than the price of these, so if you're planning to use them on the road and track then you better off with Michelin Pilot Sport Cup or toyo R888 and if you found them pricy then conti3 or GoodYear ASY F1 but remember road tires are not very good on the track due to the lack of grip on a hot dry track day.

Note: The new Michelin PS2 do have a soft sidewall you can almost push the tire of the rim therefore even more bad handling.