When to replace rotors? - Mazda 6 Forums : Mazda 6 / Mazda Atenza Forum

fredricktsang · 11-11-2009, 05:12 PM

I'm just wondering when should I replace my rotors? What thickness should they be under to consider changing? cuz i'm about to change my pads soon, so i'm wondering if i should replace the rotors too

seigfredm · 11-18-2009, 05:45 PM

I would just get the rotors out and have a shop resurface it, they will tell you if they are still thick enough to be resurfaced.
I got 94K miles on mine and they're still the original ones

wannabe6owner · 11-19-2009, 10:17 AM

because of the differences in pad material, its always a good idea to have your rotors resurfaced (or turned). you can also sand with a fine grit sand paper until there is a light cloudy haze to get some of the embedded pad material off the surface. be sure to clean the rotor after sanding. a local shop turned mine for $15 a rotor so its not a big deal.

one thing to keep in mind is different pads may adversely react with the OEM rotor surface. both EBC and Hawk pads did a number on my rear OEM rotors with a lot of grooving and uneven pad wear. i've since been recommended to use ceramic pads for better rotor life.

the mazda · 12-03-2009, 02:07 AM

shops charge you an arm and a leg to resurface the rotor. if it doesn't have obvious noticeable scratches on them, i wouldn't think it's necessary. post pics of your rotor and we'll judge

Spazdog · 12-03-2009, 08:24 PM

Most shops use the cheapest Accuturn lathe and have a shop monkey gouge the crap out of your rotors and cut them in one pass.

I wish they would just let me do it. I'd still be willing to pay them.

jayhawk6s · 12-30-2009, 02:58 PM

QUOTE (the mazda @ Dec 3 2009, 01:07 AM)

Quote:

shops charge you an arm and a leg to resurface the rotor. if it doesn't have obvious noticeable scratches on them, i wouldn't think it's necessary. post pics of your rotor and we'll judge[/b]

In my opinion, this is bad advice. Any time you're changing pads, you should turn or replace your rotors too. It costs less than $20 to get both done at O'Reilly or a different parts place and is well worth it.

11-18-2009, 05:45 PM	#2 (permalink)
seigfredm Track Racer Join Date: Jan 2008 Location: 95110 Posts: 226 Thanks: 0 Thanked 0 Times in 0 Posts Groans: 0 Groaned at 0 Times in 0 Posts iTrader: 0 reviews	I would just get the rotors out and have a shop resurface it, they will tell you if they are still thick enough to be resurfaced. I got 94K miles on mine and they're still the original ones __________________ 2004 MAZDA 6S 5 DOOR HATCHBACK,STEEL GRAY, ATX KNN CAI, MAGNAFLOW EXHAUST TRUECOOL LPD TRANNY COOLER EVOKE 17X7 GUN METAL RIMS, 225/45/17 ZR NEXEN N3000 TIRES

11-19-2009, 10:17 AM	#3 (permalink)
wannabe6owner Drivers License Join Date: Apr 2004 Location: DC area Posts: 88 Thanks: 0 Thanked 0 Times in 0 Posts Groans: 0 Groaned at 0 Times in 0 Posts iTrader: 0 reviews	because of the differences in pad material, its always a good idea to have your rotors resurfaced (or turned). you can also sand with a fine grit sand paper until there is a light cloudy haze to get some of the embedded pad material off the surface. be sure to clean the rotor after sanding. a local shop turned mine for $15 a rotor so its not a big deal. one thing to keep in mind is different pads may adversely react with the OEM rotor surface. both EBC and Hawk pads did a number on my rear OEM rotors with a lot of grooving and uneven pad wear. i've since been recommended to use ceramic pads for better rotor life. __________________ Attention: Please be sure to read my reply or original comment before "flaming" or unecessarily writing uninformed d-bag responses. A difference in opinion or presentation of facts contrary to your beliefs does not imply an attack on your views or pride. This is the Internet, not elementary school recess. Thank-you.

12-03-2009, 08:24 PM	#5 (permalink)
Spazdog Track Racer Join Date: Apr 2008 Location: Arlington, TX Posts: 717 Thanks: 25 Thanked 3 Times in 3 Posts Groans: 1 Groaned at 0 Times in 0 Posts iTrader: 0 reviews	Most shops use the cheapest Accuturn lathe and have a shop monkey gouge the crap out of your rotors and cut them in one pass. I wish they would just let me do it. I'd still be willing to pay them. __________________

11-11-2009, 05:12 PM	#1 (permalink)
fredricktsang Learners License Join Date: Nov 2007 Location: Los Angeles, CA Posts: 29 Thanks: 0 Thanked 0 Times in 0 Posts Groans: 0 Groaned at 0 Times in 0 Posts iTrader: 0 reviews	I'm just wondering when should I replace my rotors? What thickness should they be under to consider changing? cuz i'm about to change my pads soon, so i'm wondering if i should replace the rotors too

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12-03-2009, 02:07 AM	#4 (permalink)
the mazda Drivers License Join Date: Nov 2009 Location: Los Angeles, CA Posts: 60 Thanks: 0 Thanked 0 Times in 0 Posts Groans: 0 Groaned at 0 Times in 0 Posts iTrader: 0 reviews	shops charge you an arm and a leg to resurface the rotor. if it doesn't have obvious noticeable scratches on them, i wouldn't think it's necessary. post pics of your rotor and we'll judge