hi lauschie the shaking you are refering to is brake shutter and is caused by your brake disc's being slightly warpped (the surface of the disc is not flat), they will need to be machined if you want the shaking to go away, i suggest you get your disc's machined when you get new brakes put in. and in terms of your steering wheel not being straight when driving, the roads are slopping to the left slighty to enable water to run to the kerb drains when it rains and so forth so that would be why it slops to the left, if you really are concern about it and think it's not the road you can get a wheel alignment.