There are 2 answers I will give you because you asked two questions.1) The pull- if you have had an alignment and new tires there are two things that can cause a pull that are not related to the alignment. One is the tire itself, a tire can cause a severe pull due to the way the tire was made. Its not a bad tire but sometimes the tread will catch the road wrong and pull the carThe fix is to swap the front tires from left to right. if the pull changes direction then there is you problem. the way to fix that is rotate the new tires and swap sides from the original position. this will help wear the pull off of themthe other tire pull problem can come from low tire pressure, you could have picked up a nail in the new tire and it can make a car pull pretty bad if it gets low enough on air.2) The brakes- if the steering wheel shakes when you slow down then your rotors are warped. its a simple fix, just get the front rotors turned. that should solve ithope this info helps