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Title: Rotor thickness when new?
Post by: OverCaffeinated on January 26, 2009, 12:46:09 PM

What is the thickness of the stock brembo 320mm rotors when new?

Also, what's the typical life span (mileage) one might expect?

Title: Re: Rotor thickness when new?
Post by: Howie on January 26, 2009, 01:07:49 PM

Monsters have 4mm thick rotors, minimum thickness 3.6 mm. Mine lasted 40+K miles. Life span depends on riding conditions and pad material.

Title: Re: Rotor thickness when new?
Post by: OverCaffeinated on January 26, 2009, 01:15:14 PM

I just bought a set of 320mm rotors with 9k on them.

The rotor is stamped " MIN TH 4.5mm". They measure about 4.9mm now.

Title: Re: Rotor thickness when new?
Post by: Howie on January 26, 2009, 01:29:02 PM

5 mm. rotors are a good upgrade, I have 5mm. Alth on the bike now.

Title: Re: Rotor thickness when new?
Post by: DucHead on January 26, 2009, 01:46:29 PM

Many rotors have the thickness stamped onto the carriers.

Title: Re: Rotor thickness when new?
Post by: OverCaffeinated on January 26, 2009, 04:34:02 PM

only the minimum thickness is stamped

Title: Re: Rotor thickness when new?
Post by: bigiain on January 26, 2009, 06:53:38 PM

Quote from: OverCaffeinated on January 26, 2009, 12:46:09 PM
Also, what's the typical life span (mileage) one might expect?

FWIW, I've just replace my original front disks at ~130k miles. I _probably_ should have replaced them 20 or 30k miles back, they were _quite_ undersized...

big

Title: Re: Rotor thickness when new?
Post by: aaronb on January 26, 2009, 07:55:53 PM

just mic the rotor near the carrier where the pads do not touch.

Edit: just did it, 2007 s2r1000, stock rotors. 0.157" or 3.99mm

Title: Re: Rotor thickness when new?
Post by: DucHead on January 27, 2009, 04:34:14 AM

Quote from: OverCaffeinated on January 26, 2009, 04:34:02 PM
only the minimum thickness is stamped

Right.

My bad! ;D

Title: Re: Rotor thickness when new?
Post by: OverCaffeinated on January 27, 2009, 08:04:36 AM

Ok got it. I just measured wear the pad doesn't touch, per aaronb's suggestion, 5mm. Wear the pad does touch 4.9+mm. Not bad for $90.00 shipped. Now I just gotta check if they are warped.

Title: Re: Rotor thickness when new?
Post by: Cider on January 28, 2009, 11:59:23 AM

Here are rotor specs. for Ducati (and other compatible bikes) for aftermarket rotors. I assume that they are close to the stock specs: http://www.metalgear.com.au/part_disc.asp?partno=21.015

Ducati Monster Forum

Moto Board => Tech => Topic started by: OverCaffeinated on January 26, 2009, 12:46:09 PM