NO. The rotors will rust overnight if the conditions are right. The rust will be removed the first time the brakes are applied. Yes if the rust has pitted them. Just have them turned on a brake lathe.
new rotors are good to go from the box. just clean them with a brake cleaner before you install the pads, as rotors have a thin protective film on them to prevent rust etc in shipping and storage
new pads should have full surface contact with rotors,as should old ones
Your rotors had the grooves before, from the old pads. You should have had them turned. Next time check rotors at time of fitting new pads. If you can see or feel grooves then they should be repaired.
Typically rotors come from the factory covered with a waxy material to prevent rust. Yes, it's a good idea to remove that material before using the brakes.
heat! heat! heat! causes a rotor to warp 95% of the time. Little to now rust buildup in the vent area of the rotor, need a good pasage for air movement. rusty and flaking rust are no good! New calipers, brake flush, new rotors, clean flat surface free of rust buildup on the spindle area. All very important.
I just replaced mine, rotors had rusted away. Remove caliber, mine were rusted to the wheel hub, had to pry off. cleaned old rust off with steel wool, new rotors slid on with no problem
It depends the level of rust and degradation but yes usually minor rust is available to fix with a liquid which decreases rust and the things associated.
Remove the wheels of the affected rotors. Remove the calipers and hang from a bungee or other strap to prevent stress on the brake hoses. Remove the caliper brackets. Remove the rotors. Clean the rust from the hub flange. Clean the anti-rust from the new rotors. Install the new rotors. Install the brackets. Install the new pads (if you are using new pads). Compress the caliper piston, one side at a time, using a c clamp or actual piston tool. Install the calipers. Install the wheels. MAKE SURE YOU PUMP UP THE PEDAL BEFORE YOU PUT THE CAR IN GEAR. Many people have taken out walls for forgetting this step.
if your rotors r worn you see little groves on them that go all the way around these grove tend to have a rust color
The grinding noise is from the the pads being gone and rotors being grinded away. Unless it was just some rust on the rotors from sitting for days.
Yes, both rotors should have the same type of finish on them for even braking. They could both be new, used, or both resurfaced.Yes, both rotors should have the same type of finish on them for even braking. They could both be new, used, or both resurfaced.