Originally Posted by Jockey
...I'm still absolutely ticked off that the same size Michelins rub. Nice improvement over the PS2
It could be that Michelin has change the actual tire specs(the physical dimensions) from PS2's to PSS. I don't see why... but it could be. Normally you only hear of tire variances from tire maker to tire maker. ie: Dunlaps vs Michelins. But I haven't heard of a tire maker making tires of different(actual) sizes with in its tire line.
I also know from my VW/Audi days that some cars can be built with weird tolerances. Sometime you would run across a car that the car body was off as much as 3/4 of an inch from left to right.