The yoyo has Blizzaks on it, I can't say they're confidence-inspiring but the car is quite heavy. It does indeed sound like it's got 4 wheel bearings in imminent need of changing with them on. They are proper snow tyres, so you'll eat them if you try to run them through summer.
For summer tyres it has another set of Bridgestones, I can't remember which but they're crap and it wanders all over the place on the motorway, it feels like the tracking's well out (it's been checked) and never quite self-centers, which it does with the noisy snow tyres, before you ask. Worse still, they're approaching the end of their life so they're only going to get worse, unfortunately I just can't afford to replace them early, so I'm going to have to suffer it for another year
On the other hand I have Bridgestones on the bike, which have bneen excellent and still performed last year despite being well past their sell by date.
Glib summery: Bridgestones for bikes - excellent. Bridgestones for cars - garbage.