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I'm looking at a used 2004 Mazda 6. I paid a Mazda dealer to give it an inspection. They say it needed new front pads and rotors. The dealer I am possibly buying from said the rotors probably just needed to be reconditioned. The rotors measured at 24.2 and 24.4 which puts them at .4 and .6 mm away from what I've read the min spec is of 23.8. I'm curious what new ones measure at. Everytime I search, I only ever come up with the min spec of 23.8 and no one seems to list the new width. If they come at 24.5, obviously 24.2 and 24.4 aren't very warn. If they come at 30mm, well it's close enough they need to be replaced.

Thanks in advance for reading and answering. Would appreciate an opinion on if they need to be replaced or just reconditioned as well since I'm not an expert on this sort of thing.
 

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R1 Concepts sells rotors for the 6 and they have detailed specs listed. According to their specs, new is 25 mm and min thickness is 23 mm.

2004 MAZDA 6 Front Brake Rotors - OEQ Blanks poe.45063

According to this post, absolute min is 22 mm.

http://forum.mazda6club.com/australia/135106-brake-wear-2.html

Either way, the rotors aren't even worn 50%. If the pedal doesn't pulse when you hit the brakes, I don't think there's a good reason to touch the rotors. Without knowing how bad the pads are, it sounds like the dealer may just be trying to get some business.

Not to discourage you, but 03-04 V-6 auto 6's are known for having transmission problems. If may be worth your while to search the forum so you know what you're getting yourself into. 2005 and later cars have a different auto trans that's generally more reliable.

Good luck with your search!
 

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Discussion Starter #5
Thanks for the advice. I'm also glad to know that min is 23. The thread linked below confused me with different specs for on and off car lathing. Also the Mazda dealer told me it was 23.8. The used car dealer trying to sell me the car is claiming 23.1, which actually sounds more accurate than the Mazda Dealer.

http://forum.mazda6club.com/suspension-brakes/198591-rotor-thickness-specifications.html

I'm actually looking at a manual transmission, so thankfully the automatic problems won't apply to me.
 

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I'm actually looking at a manual transmission, so thankfully the automatic problems won't apply to me.
Good man. I'm quite jealous actually. My "better half" had a strong opinion about that particular feature....

The on vehicle brake lathe is pretty much just like it sounds. It's a machine that mounts to the hub of the vehicle and turns your rotors without having to take them off the car. So Mazda wasn't lying...they just don't take the time to pull the rotors off to turn them. I didn't realize that the on vehicle min thickness is different than the off vehicle min.

Good luck with your search man.
 
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