Torque steering and crappy traction during hard cornering + hard accelerating...is just one of those things you will have to live with in a FWD car.
The older Volvo traction control does not work like that, so don't expect it will help you at hard acceleration during cornering.
You can always try to get those limit slip differential to remedy this problem, but LSD isn't exactly the most driver friendly device you want to add to your car.
Regarding the vibration, it could be as simple as the tires' balance being off or something other nuances. Or like you said, the worst case is rims are outta round.
The older Volvo traction control does not work like that, so don't expect it will help you at hard acceleration during cornering.
You can always try to get those limit slip differential to remedy this problem, but LSD isn't exactly the most driver friendly device you want to add to your car.
Regarding the vibration, it could be as simple as the tires' balance being off or something other nuances. Or like you said, the worst case is rims are outta round.