Shimmy under braking!!!!!!!

Hello all, the problem is this. I installed new brake rotors/pads up front, had the rears turned and new pads. The car has 110K on it and when I apply the brakes it shimmies between 65-40mph. It did this before the brake job so I am wondering if it could be something else. The wheel bearings all the way around feel good. The shocks/struts are original I believe. I am wondering if the rotors that I bought could gave been bad from the get go? Any ideas? Thanks

Hows your brake fluid holding up? Take a look at that, because you might have air in the brakes, and need to bleed them.

I forgot to mention that I bled all four brakes per the factory manual. I sucked out all the old fluid and started with fresh stuff and bled the lines until clear fluid ran through all four. Thanks

I had the same problem, replaced disks, measured runout, etc. to no avail. I ended up taking off the aftermarket disks and putting on a set of GM disks on the front. That fixed it. Aftermarket disks for some unknown reason had no effect.

I've got a 95 and the same thing just started happening to me 2-3 months ago. It's like a pretty small but fast shaking right?

What type of pads are you using... I opt for the more costly pair, the cheaper ones seem to cause a lot more shaking during braking... I could be way off...

my 91 does the same thing if braking above 45 mph