Er right, where to start...i have the 912s and had the 452s on my old mig. Basically they tick most of the boxs in my book, wet and dry grip is good, they are quiet and last ok but not as long as Pipelli p 6000s but are cheaper,also they seem to give a supple ride, and therein lies the problem imho, the carcus/construction.
I should say this is not confirmed but i beleive they have a problem with tram lining, both the 452s and the 912s. My evidence? Well more reliably a mate has BMW E39 with michelins, he drove his mates E39 with Falkens and found them awfull by comparison, inaccurate and wayward on the motorway and a hand full on bumpy back roads. The two cars have had extensive bush and controle arm work done as they are sensative to bush play. They are both up on all their maintenance.
I have had a devil of a job with very similar handling issues, and have replaced all the bushes with firmer items on my car. The symptoms remain. A visit to Kevin Wood for a tech2 session turned into a test drive of each others cars. His has Dunlop sport max 2s iirc and tracks as straight and true as any car i have driven, he says he suspects his wishbones or tires are about to go. Yet his mv6 is 50 times more accurate than my elite with new bushes all round new rear shocks and springs and new tires, its arm had wim set up and inspection for steering idler springs etc. I cant see mv6 suspension making any difference to side ways movement with my Elite suspension. So i lay the blame fairly and squarely with the tyres on my car, 912s. I had the 452 s on my old car and found them similarly wayward. Basically it feels like your driving in a constant crosswind, they seem to pick up every imperfection and over react. I have since pumped them up to 36psi to keep the buggers straight and this has helped alot but the ride is now too harsh.
I hope to prove this by swapping wheels with different tyres on and feel the car transform. I hope so or i have bought a cut and shut bendy bus.
From my experience, i would say avoid, but the member above seems happy with them.