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I wonder if anyone know if the P-Zero 305/30/19 N1 tire are wider than the Michelin PS4S 305/30/19 non N rated tire? I know they are the same in figures but what I understand the differ in tread width, and I wonder if anyone have compared these two tires width in real life.
Not sure about the measurements, but I can say that I’ll never go back to P-Zero’s after living with and loving my MPS4s.
Exactly ---> PS4s are so much better than P- Zero's . I would only buy P Zero's if they were selling them for half of their list price and even then I would keep them only as my back up set ...
Screw Pirelli ..... Had the P Zero"s also on my Cayenne and one tire spit all the way around in between the tread !! Pirelli is in the same class as Good Year tires ....Good from far far from good ..
Last edited by rileyracing1; Mar 7, 2023 at 12:14 PM.
The MP4S 325/30/19 fits a 12" wheel just about perfect.
The wheels are OZ Ultraleggera 9 X19 and 12 X19- centerlocks with ET F: 47 R: 48 ...sized for 997.2 GT2RS
Sidewall is neither stretched nor excessively proud of the rim to my eyes.
I particularly appreciate the bead protecting the rim from curb rash.
Last edited by Liste-Renn; Mar 7, 2023 at 05:25 PM.
The MP4S 325/30/19 fits a 12" wheel just about perfect.
The wheels are OZ Ultraleggera 9 X19 and 12 X19- centerlocks with ET F: 47 R: 48 ...sized for 997.2 GT2RS
Sidewall is neither stretched nor excessively proud of the rim to my eyes.
I particularly appreciate the bead protecting the rim from curb rash.
Hey, Peter.
I am always surprised to hear that the 12" rear fits in a 997 NB wheel well- but you've proved that with the proper offsets, there's plenty of space for them.
Looking at my front sidewall above, it looks like a 255 would fit on the 9" front wheel.
Your fronts are 255/30/19 correct?
Mine are 245/35/19, and the rolling radius was fine with Porsche on the 997.2 GT2/3 RS, so I went with that.
It looks ever so slightly stretched with the 245- but is hardly noticeable except from that exact angle.
BTW, the 9" F with ET 47 sits about .4 inch proud of the upper wheel well lip- likely since the 997.2 GT3 and GT2 RS with wheels in that size/offset had front fender flares to accommodate that half inch.
An 8.5" F with ET 53, would probably fit perfectly- and I believe that is the 997.2 GTS/GT3/turbo OEM spec.
When I ordered my OZ SL from Tire Rack (USA distributor), the 8.5 ET 53 was available, and I was tempted to go with that size to match whatever scrub radius Porsche built in, but went with 9" ET 47 to keep the F/R stagger the same as the GT2RS.
I have felt zero problem with the 9/12 setup on the Ultraleggeras, so it will likely not be an issue with the same spec Superforgiatas.
I hope.
Last edited by Liste-Renn; Mar 9, 2023 at 01:03 AM.
Hey, Peter.
I am always surprised to hear that the 12" rear fits in a 997 NB wheel well- but you've proved that with the proper offsets, there's plenty of space for them.
Looking at my front sidewall above, it looks like a 255 would fit on the 9" front wheel.
Your fronts are 255/30/19 correct?
Mine are 245/35/19, and the rolling radius was fine with Porsche on the 997.2 GT2/3 RS, so I went with that.
It looks ever so slightly stretched with the 245- but is hardly noticeable except from that exact angle.
BTW, the 9" F with ET 47 sits about .4 inch proud of the upper wheel well lip- likely since the 997.2 GT3 and GT2 RS with wheels in that size/offset had front fender flares to accommodate that half inch.
An 8.5" F with ET 53, would probably fit perfectly- and I believe that is the 997.2 GTS/GT3/turbo OEM spec.
When I ordered my OZ SL from Tire Rack (USA distributor), the 8.5 ET 53 was available, and I was tempted to go with that size to match whatever scrub radius Porsche built in, but went with 9" ET 47 to keep the F/R stagger the same ad the GT2RS.
I have felt zero problem with the 9/12 setup on the Ultraleggeras, so it will likely not be an issue with the same spes Superforgiatas.
I hope.
I'm running
Front - 19" x 8.5" et 50mm with 255/35-19
Rear - 19" x 12" et 74mm with 325/30-19
A 9" front would be better for the 255 but not buying any more wheels for 1/2" width and these offsets are fairly conservative as I don't like poke.
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P-Zero width vs PS4S
