I have 11.5 inch HRE rear as well.. Are you stretching with 305 PS2's? Got a pic?

 

just an FYI, I bought my car as a CPO from a Porsche dealer here in CA. They put new Bridgestones on the car and they put the 305/30/19s on the back.

 

We have two C2S's in the family. The 07 has 305/30/19 on the factory tag that's on the door jamb. The 06 C2S has 295/30/19 on that tag.

 

Sure do hers a pic, I assume you are running 315 on yours?
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Just running the stock 295/30/19 on the rear.

For the track I use 18" wheels but wider front and rear tires. No need for this on the street though.

 

Actually I'm running 305 Pirelli Pzeros and they seem to stretch more than your Michelin PS2's. However its to my knowledge than Pirelli's run narrow and Michelin + Yokohama's run wide.

My next move might be just to run PS2's since I don't need the amount of grip a 315 tire can provide.

 

yeah i heard the same thing, the ps2 fit perfect, with no rub

 

I'm actually using 295/30/19, previously 275/30/19 with spacers. But I like the 295 look.

 

 

305/30/19 on my C4S cab