Ok we get TT's drift, he's a Mich b!tch,
LOL.
but I'll take you to task here, the PS2 is past its sell by date,
You have got to be joking - seriously! The PS2 has only been out about 5/6 years, and is still up there with current technology. In fact, the PS2 technology is still so good - that Goodyear had to copy its fundamentals for its own Eagle F1 Asymmetric!

the F1 Assys is a better tyre,
Sorry, but I strongly disagree. And so do Porsche and quattro GmbH.
ETTO though.
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.
Wrong. The vast majority of car makers, including all mainstream VAG marques and Porsche, do NOT have a single contract for tyre suppliers. It would breach EU anti-competition laws!

Look at my previous post - and the OEM tyre suppliers just for the B7 RS4 include Pirelli, Michelin, Continental and Dunlop - quite a variety of makes - yet no Goodyear!
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.
Huh, wtf are you on about? OEM tyres on Porkers include Dunlop, Michelin and Continental - so how can you state they just use a 'German' company?

And for the record, the CSC3 (and the older CSC2) are excellent tyres - though they do perform differently compared to the PS2.
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.
Huh - been fiddling with your playstation?

And '8-10' years is way off the mark - both for cars and tyres!

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.
I really don't know which Kumhos were on the Polo - they had big 'fuel saver' lettering (or sommat like that) round the sidewalls. But the Tiguan had different non-fuel saver tyres. But these were both lethal - IMVHO.
I can't really comment on their 'high performance' tyres - however, what concerns me is that
some kumhos most definataly are fookin shyte - whereas with Michelin, their entire range are truely superb.
Lastly I stand corrected I did not mean bead, but carcass plies, well spotted. 
