BREAKS 60/80khm , when i apply the breaks there is a shimmy in the front end, have new rotors and pads

Loose tie rods that is what my problem was when my car did that. What happens is when you apply the brakes the tie rods move in and out

Brake shimmy is due to hot spots on the rotor or drum the metal is actually hardened in the spots causing friction differences when the brakes are applied causing front end to shimmy . If you have your rotors turned the hot spots are still present so I have always justr replaced rotors pads all at once shimmy gone .

Brake Pads need replaced,the Vibration is caused because the Rotors are warped from excessive wear...turn or replace rotors and new brake pads needed

sounds like warped rotors have them turned.

I think you should get the Tierod ends checked. When you get a Front-end alignment, the mechanic will check them. Although you turned the front Rotors, when you start Braking the front tires can wander differently than when they freewheel.

Sometimes you can get a rust problem on the Rotors that were just made shiny. Moisture on the pads imprints a rust blotch on the Rotor and they grab at the rust until the rust wears down. Then they are ok.

When the rear Rotors were replaced check your bill and see if the Emergency brake shoes were changed. The E brakes should have been adjusted when the Rotors were replaced. The Shimmy you describe can also be the ABS working. The ABS is a pulsating Brake action.

Get your front-end checked first, then as the mechanic road tests it when the Alignment is complete, he can judge the brakes.,

Replace rotors and pads, have your breaks bleed. This should fix the problem.

most likely been front damaged before or check out the wish bone or shock

Did you also replace the brake pads? If not, the wear from the warped rotors most likely caused uneven wear on the pads (not visible by looking at them, but apparent when you apply the brakes). This is probably causing it feel like the rotors are still warped. I don't believe your anti-lock brakes have anything to do with this.

front rotors are warped turning them will make them worse because the van is so heavy i would buy good ones from napa

it could be because they are dirty. also the noise could be the back brakes. if its a squeaking noise it could be that they are dirty or that they are cheep brake pads and for the first couple of weeks they squeak. also when you got your breaks changed did the break shop cut the rotors because that cleans them up and makes the rotors like new.