Rear Brake Rotors

thepman06 · 05-25-2006, 03:33 AM

has anyone else noticed that the rear brakes are not as shiny and new looking as the front? It almost looks like there are spots on them. Any one else have this? is this a problem and they need adjusting or is it something worse?

***GalaxyGreySi*** · 05-25-2006, 04:26 AM

My Si has 500 miles on it, and the rear rotors STILL have the factory grooves in them; The rear brakes, it seems, contribute hardly anything to the overall stopping power of the vehicle. I knew this already, but DAMN! They've still got the rust spots on them from getting rained on before I bought the car! I burned those off the FRONT rotors after like 10 miles!

galaxycivic · 05-25-2006, 10:39 AM

My coupe has almost 1700 miles on it and still barely any wear on the rear rotor. I think its normal and I wouldn't worry about it. I am planning on changing to drilled / slotted with zinc coating as soon as they come out.

ventura · 05-25-2006, 12:13 PM

if i'm not mistaken, but arn't the front brakes doing most of the work anyway? That would explain why the rear are not as worn.

I wouldn't worry about it, my other car has Drum brakes all the way around, its fun to try and slow it down froom 100mph!

thepman06 · 05-26-2006, 03:40 AM

thx for all the responses...that is kinda what I figured. I just thought those "rust" spots would be gone by now.

007 · 05-29-2006, 01:38 PM

Do you guys want to know how to get them off really quick???

Drive to about 60mph, then slightly pull up on your E-Brake, thats how i got the spots and grooves off mine, they disapear really quick.

NOTE: Dont do this alot, its not that good for your car, and don't yank up on the E-Brake really hard either, this can cause a serious loss of control.

jc21 · 05-29-2006, 05:58 PM

Done quite a bit of brake and suspension repair back in day. No matter if you have discs in the front and drums in the back, or all discs, or all drums. The front brakes will do about 80% of your normal stopping. That would explain why your rear brakes still look so new and why rust spots don't come off.

On a second note, I've never owned a car with 4 wheel disc. My question is this... Can you rotate the rotors like you rotate tires? If so then you can you switch your rotors after you fronts get worn down some?

WiDeFiRE · 05-29-2006, 07:30 PM

You can't rotate the disc. They are not the same model size anyway. Usually you will go through the front twice before doing the rear ones.

Usually the front disc are vented and full in the back.

jc21 · 05-29-2006, 10:28 PM

I figured it wouldn't be that easy. They coulda just just made them the same size and made life easier. Keep rotating them every 10,000 miles or so. It would take you quite some time before you actually had to change them.

WiDeFiRE · 05-29-2006, 10:50 PM

Anyway, removing your rotor isn't user friendly as let's say, changing your wheels.

Your front rotor should last you at least 50 000 miles anyway. You will change your pads before the rotor. Rotors cost less than 100$ each anyway... It's not like it was in the 4 digits. Something nice to do would be changing the rear drums for disc if you have a LX/DX.

***unplugged*** · 10-29-2006, 11:27 AM

only 20-30% of braking happens in the rear. All the weight gets transfered to the front.

jc21 · 10-29-2006, 02:45 PM

Quote:

Originally Posted by WiDeFiRE

Anyway, removing your rotor isn't user friendly as let's say, changing your wheels.

Your front rotor should last you at least 50 000 miles anyway. You will change your pads before the rotor. Rotors cost less than 100$ each anyway... It's not like it was in the 4 digits. Something nice to do would be changing the rear drums for disc if you have a LX/DX.

I disagree. Changing rotors is quite simple. Plus if you had 4 wheel disc's that could be rotated, you could just about double the life expectancy of them. Not to mention OEM rotors can be quite pricey.

***unplugged*** · 10-30-2006, 12:34 AM

Quote:

Originally Posted by jc21

I disagree. Changing rotors is quite simple. Plus if you had 4 wheel disc's that could be rotated, you could just about double the life expectancy of them. Not to mention OEM rotors can be quite pricey.

don't know any rotors that you can rotate, nor would you want too? The rotors are fit to that pad that was used. if you change the pad, then you can get some brake noise and/or reduced braking performance.

Front rotors are usually bigger or equal to the rear because the fronts have the weight transfered to them when decelerating/braking.

05-25-2006, 03:33 AM	#1 (permalink)
thepman06 Member Join Date: Dec 2005 Age: 45 Posts: 44 iTrader: 0 / 0%	Rear Brake Rotors has anyone else noticed that the rear brakes are not as shiny and new looking as the front? It almost looks like there are spots on them. Any one else have this? is this a problem and they need adjusting or is it something worse?

05-25-2006, 04:26 AM	#2 (permalink)
*GalaxyGreySi* 280whp, 219tq, GReddy FTW Join Date: May 2006 Location: Albuquerque, NM Age: 24 Posts: 4,163 Phil iTrader: 1 / 100%	My Si has 500 miles on it, and the rear rotors STILL have the factory grooves in them; The rear brakes, it seems, contribute hardly anything to the overall stopping power of the vehicle. I knew this already, but DAMN! They've still got the rust spots on them from getting rained on before I bought the car! I burned those off the FRONT rotors after like 10 miles! __________________ If you must whine about my Avatar, do it in this thread: http://www.8thcivic.com/forums/showthread.php?t=35167

10-29-2006, 11:27 AM	#11 (permalink)
*unplugged* VIP Member Join Date: Sep 2005 Location: NJ Age: 24 Posts: 1,266 iTrader: 1 / 100%	only 20-30% of braking happens in the rear. All the weight gets transfered to the front. __________________ - Mark 2008 Honda Civic SI (stock) 2006 Honda Civic EX (sold)

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05-25-2006, 10:39 AM	#3 (permalink)
galaxycivic Senior Member Join Date: Apr 2006 Location: Glendale, AZ Posts: 201 iTrader: 0 / 0%	My coupe has almost 1700 miles on it and still barely any wear on the rear rotor. I think its normal and I wouldn't worry about it. I am planning on changing to drilled / slotted with zinc coating as soon as they come out.

05-25-2006, 12:13 PM	#4 (permalink)
ventura Member Join Date: May 2006 Posts: 85 iTrader: 0 / 0%	if i'm not mistaken, but arn't the front brakes doing most of the work anyway? That would explain why the rear are not as worn. I wouldn't worry about it, my other car has Drum brakes all the way around, its fun to try and slow it down froom 100mph!

05-26-2006, 03:40 AM	#5 (permalink)
thepman06 Member Join Date: Dec 2005 Age: 45 Posts: 44 iTrader: 0 / 0%	thx for all the responses...that is kinda what I figured. I just thought those "rust" spots would be gone by now.

05-29-2006, 01:38 PM	#6 (permalink)
007 Member Join Date: Jan 2006 Location: Dallas, Texas Age: 44 Posts: 93 iTrader: 0 / 0%	Do you guys want to know how to get them off really quick??? Drive to about 60mph, then slightly pull up on your E-Brake, thats how i got the spots and grooves off mine, they disapear really quick. NOTE: Dont do this alot, its not that good for your car, and don't yank up on the E-Brake really hard either, this can cause a serious loss of control.

05-29-2006, 05:58 PM	#7 (permalink)
jc21 Senior Member Join Date: May 2006 Location: Chicago/Lincoln Park Age: 23 Posts: 1,211 I Like Cheese iTrader: 2 / 100%	Done quite a bit of brake and suspension repair back in day. No matter if you have discs in the front and drums in the back, or all discs, or all drums. The front brakes will do about 80% of your normal stopping. That would explain why your rear brakes still look so new and why rust spots don't come off. On a second note, I've never owned a car with 4 wheel disc. My question is this... Can you rotate the rotors like you rotate tires? If so then you can you switch your rotors after you fronts get worn down some?

05-29-2006, 07:30 PM	#8 (permalink)
WiDeFiRE Member Join Date: Dec 2005 Age: 28 Posts: 91 iTrader: 0 / 0%	You can't rotate the disc. They are not the same model size anyway. Usually you will go through the front twice before doing the rear ones. Usually the front disc are vented and full in the back.

05-29-2006, 10:28 PM	#9 (permalink)
jc21 Senior Member Join Date: May 2006 Location: Chicago/Lincoln Park Age: 23 Posts: 1,211 I Like Cheese iTrader: 2 / 100%	I figured it wouldn't be that easy. They coulda just just made them the same size and made life easier. Keep rotating them every 10,000 miles or so. It would take you quite some time before you actually had to change them.

05-29-2006, 10:50 PM	#10 (permalink)
WiDeFiRE Member Join Date: Dec 2005 Age: 28 Posts: 91 iTrader: 0 / 0%	Anyway, removing your rotor isn't user friendly as let's say, changing your wheels. Your front rotor should last you at least 50 000 miles anyway. You will change your pads before the rotor. Rotors cost less than 100$ each anyway... It's not like it was in the 4 digits. Something nice to do would be changing the rear drums for disc if you have a LX/DX.