I have a Honda Civic 04 DX with Discs in the front and drums in the back. I have changed the brake pads at 60K but I want more info on RotorsHow do i know when i have to replace my rotors?
The minimum machining limits on most Japanese vehicles (at least here in Japan) is inside the rotor itself. It must be removed in order to see it. It generally will say %26quot;Min 19mm%26quot;, or something similiar.
For some reason, people think you must machine or %26quot;turn%26quot; the rotors every brake change, which is untrue. Most rotors can only handle 2-3 turnings (depending on how much material is removed), while some specify no machining at all...simply replace. They should not need it unless they have been grooved, warped, or have some condition that makes if necessary.
Vibrations while braking (usually in the brake pedal itself) can indicate rotors that are out of round, a faulty caliper, or incorrectly adjusted rear drum brake(s). (YES..loose shoes that refuse to self-adjust can give similiar symptoms)
Measurements must be made with a micrometer in several places going towards the center of the rotor if possible. (Go with the smallest reading if it varies). Never with a set of calipers, which can only measure the widest point at the outer edge. (Not accurate, as the edges can flare slightly, and rust can throw off the reading). A wrench is ok in a pinch, like looking thru a junkyard for a decent replacement (if you go that route), but keep in mind, a 19 mm wrench measures slightly over 19 mm.. (.4mm or .015 in. wider) otherwise, to get it over a 19 mm nut, it would be a press fit.
Factory replacements can run a couple hundred dollars, but I'm sure you can find a quality replacement for much cheaper. I'm not familiar with your particular model, but generally Hondas only require tire removal, then brake caliper, and finally the two machine screws which hold the rotor snugly to the spindle to replace the rotor. (Most common with smaller bodied Hondas)
Some require a puller to remove the rotor from the hub bearing (much more expensive)..but, more common with larger models (Legends and Inspires etc..)
Hope this helps...How do i know when i have to replace my rotors?
You should always change them if there are any deep grooves in them. Otherwise, use a micrometer to determine their thickness and compare it to factory specs.How do i know when i have to replace my rotors?
take one into the nearest autoparts store and have them measure is the best way. Also there is a chamfer on the egde of a rotor look for it, if you do not see the chamfer you are getting really close and definately should have them measured.How do i know when i have to replace my rotors?
well when you changed your pads you were supposed to get them machined. they will tell you what kind of condition they are in. if you did get them resurfaced and they shake and feel different you probley will need some new ones. they are not very expensive and easy to changeHow do i know when i have to replace my rotors?
You can sometimes tell when you're braking, you'll feel and hear a light thudding sound every 1-2 seconds, which indicates uneven groove and wear. They can also be too thin, but you'll need a micrometer to check for this (standard width is 19mm, I believe).
Typically, a shop will re-groove them to smooth them out, but this can only be done 1-2 times, then you have to change the rotors.
A garage will give you an inspection for a small fee ($20-50) or an auto parts store will eyeball and measure them for you if you remove the tire. Cost for new pair is $150-250, depending on where you live. To replace will cost you about the same. Good luck!How do i know when i have to replace my rotors?
The minimum service limit for those rotors is 19mm. If there is no ridge on the outside of the rotor (you should have had them machined when you replaced your pads, so there should be no ridge). Try to fit a 19mm or 3/4 inch (the standard equivalent) open end wrench over the edge of the rotor. If it fits, your rotors are too thin and need to be replaced. You do not need to replace them to get rid of a brake pulse if there is still enough material to have them machined.
