this is starting to piss me off and its embarrasing..... i was on the highway today and it only shakes at 80 kms or up ONLY while braking, i let go of the brake and its fine... this happened a while back to befor i got rims but was never this bad.. this time the steering wheel was shaking my arm.. or maybe it could be cause i was going faster? any ideas?

 

if only while braking, i'm going to guess warped rotors..
maybe they are only slightly warped, so you can only notice it when they are rotating very quickly.

 

warped rotors. bald tires. check your CV boot while your at it.

 

i think it would be the rotors too... could i just take off the wheel to check if its warped or will i need to take out the rotors?

 

warped rotors, alingment, wheel balance.