YOUR RESEARCHEarly reTIREment
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Got in the car this morning and immediately found it pulling to the right. Front right tire half-down! Sidewalls already scruffed up from the 1 block drive and at 7500 miles I guess this tire is toast. My dealer made a note that my P-Zeros had red lettering, indicating a particular type beyond just the Nx code (mine are N4's). Anyone know what this refers to?
The only two N4 rated (Porsche rating) tires are: Pirelli P-ZERO ROSSO N4 (18" tires) and Bridgestone Potenza S-02A N4 (17" tires) N0, N1, N2, N3 or N4 indicates a specification identification of the tires. The complete N number must be present and visible on the outside of the tire side wall near the type-designation. Only use tires of the same manufacturer, tire type and N- specification on one vehicle.
He sounded as though the red lettering (aka "ROSSO"?) was a further designation he wanted to know beyond the N4 and P-Zero info. I had never heard that level of specification before.
All it means is that it comes with red lettering. It also designates a tread design. There's Rosso, Nero..... He just wanted to make sure you got the P-Zero tires with red lettering and tread design. He needed to make sure all your tires matched up.
Thanks guys, that clears up the mystery. Put 2 new ones on the front, leaving the rears alone for now... good for another 3K on them I hope. Also had them remove the PSE cutoff relay while it was in for tires. I got a whole new 2nd gear experience!!
What do you mean by "I got a whole new 2nd gear experience"? Does removing PSE improve 2nd gear? --Leon
Leon, I didn't have PSE removed, I had the cutoff switch removed. The cutoff disengages PSE through the 25 to 45mph range (roughly). Now my PSE is engaged 100% of the time. The "new experience" is hearing the PSE for the first time in 2nd gear from about 2500 to 4500rpm. With my particular driving style, I would previously hear the PSE in 1st, 2nd (only above 4500rpm) and 3rd - 6th. No performance improvements. Just great sound.
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