Did you use ceramic brake pads? If so, that could be the problem. Unless it's super bad, you don't really have anything to worry about. Next time, use semi metallic brake pads.
Also if the rotors were not turned this will surely cause disk brake squeal.
how do you replace the front rotors on Toyota Land Cruiser
no but it is recomended.
pull off the front wheels. remove the calipers. remove the two screws that hold on the rotors. replace the rotors and reverse the procedure.
depends on the condition od the pads. If worn or have groves etc from the rotors then replace.
how much does it cost to replace brakes rotors on honda crv
can you cut the rotors on a 2002 acura
If you are wondering whether it is possible to replace one's own brake rotors or not because you drive an older vehicle that need brake rotors replaced, then the answer is no.
You replace rotors when they get too thin, or are warped. They may be to thin to be turned and still alright to use. Rotors do not "have to" be turned to put new pads on.
2003 Nissan xterra supercharged replace front rotors
If you manged to replace the rotors w/o unhooking the calipers - no.
How do you change the front rotors on a 2004 Chevy tracker
If the rotors are in good condition, not warped, not scratched, then you can replace the pads without turning the rotors. Inspect the rotors carefully.