Ok we get TT's drift, he's a Mich b!tch, but I'll take you to task here, the PS2 is past its sell by date, the F1 Assys is a better tyre, a lot of models were developed when the PS2 was king, and thats why manufacturers recommend them, then they do not change that through the life cycle, plus they are tied in with longterm contracts. Lets be honest, Porsche is up the a*se of Conti cos its a German company and they work hand in hand, and no one thinks the Sport Contact 2 or 3 is as good as a PS2, F1 Assy.
Also from product design to model run out covers anything upto 8-10 years, and no way on earth is tyre technology standing still, so although the manufacturers tweak the brew over the life cycle of the tyre, like most things, the game is moved on, and eventually better products come to market. The PS3 has gone very quiet, maybe the economic situation, maybe its not performing, so the old PS2 soldiers on, with large rim selection getting harder to find and more expensive.
On the Kumho front, yep would agree some of their stuff was weak, but I'd be surprised if your Polo was running KU31's, cos if it was then your findings are at odds with most high performance car drivers views who use them, to label all their tyres as dangerous was like Clarkson saying all lorry drivers are rapists, cheap laugh but ridiculous.
Lastly I stand corrected I did not mean bead, but carcass plies, well spotted.
