I have nothing constructive to add to this, but I have a front end wobble that starts @ 100km so I 'm going to follow to see where this ends up.
The winter tires where better but with the more agressive tread they have a general low vibration anyway.
I've had my summers (10k on them) road forced & just had one replaced. Things are improving but I think I have multiple issues ... not entirely sure.
Last allignment was last April. I changed both front wheel bearing in Sept but didn't get it realligned. Winter tire wear is normal.