I've got them on my pp gti and up till now they've been a good tyre. Yes a bit noisy but I've managed to pull out into traffic safely without killing myself or others and they also have good grip too. This might be controversial but people complaining about spinning wheels when trying to nip into gaps etc and pulling away from lights aren't driving sensibly or safely. Do you honestly think if these tyres were dangerous they would be sold??
I kind of agree with you but

when I had the GTD, certain large roundabouts would produce understeer if there was the slightest bit of damp. I'm not talking about going at ridiculous speeds but certainly in a brisk manner.
In the exact same conditions driving my daughters Clio or sons Swift I wouldn't get any understeer. Now that could just be different cars but why would the performance Golf be so poor compared to them?
I persevered with the tyres and only swapped them to Michelin PS3's when they had worn out. It was then night and day. I still got the odd understeer and tramping but nowhere near to the same extent.
To answer your question "Do you honestly think if these tyres were dangerous they would be sold" If you are just driving a family hatchback in a family hatchback type of way then they are absolutely fine.
However on one of the performance Golfs they aren't up to the job.
I always remember when I first got the GTD and there was loads of comments on here about Bridgestones tramping and understeer and at that point I hadn't experienced any so said as much. One of the replies was "I wasn't driving it correctly" and they were right enough
