Bad wheel bearings
Shake down your rear wheels before taking the lugs off. The wheel bearings can cause the drum to go out of round quick. I turned mine twice before replacing bearing on right side. Same symptoms as you pulsating and noise. Found bearings online for 60 apiece.
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K2 Motorsport
I just got some projector halos for my 06 ls and I hate the dull orange light. I had 6000k dual beams 9006 in my stock ones. Now I've been searching the net for like two hours trying to find out if I can use an h1 conversion kit. I heard that the bulb would be too long and burn...