i just bought a pair of 18x8.5's new ///M5 rims for my 92- 525i and its a way smoother ride and all but for some reason it shakes at 55 exactly, any more or less it dont shake. what i mean by shakin is the complete steering wheel and you can also feel it on floor, i bought the rims and tires brand new there high speed balanced, i balanced them 2 times due to the fact i thought that was the problem but i guess not, my wheel alignment is good, any answers to this problem?? i got them a week ago and the more i drive it the less it shakes maybe they need to be broken in? i really dont know, answers if any please. (Will post picture as soon as it developes) Thank You: Alex