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Was following @MotoMike's caliper method for the front pads as per the instructions here:

https://www.cbr250.net/forum/cbr250-service-maintenance/29913-how-measuring-brake-pad-wear.html

I measured:

* My Brake disc thickness at 0.292
* Thickness of brand new pads = 0.710
* Measurement across of both my current pads with brake engaged = 0.810

0.810 - 0.292 = 0.518

0.710 - 0.518 = 0.192

0.192 / 0.710 = 27% wear on my pads

100% - 27% = 73% remaining of serviceable life on my pads.

This is at 8000 miles. At this rate I will certainly exceed 25k miles on the stock front pads. My commute is about 60% highway

I invite more members to share their measurements to get a better overall average. You can just buy those $3 plastic calipers from Harbor Freight Tools. And then since they dont have any instructions there is a video on YouTube that teaches you how to read them.

I would prefer to do these calculations with Millimeters but all I have is an old fashioned dial caliper that measures in thousands of an inch.
 

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I don't think you'll find any sort of useful "average" for brake pad wear, anymore than you would for other wear items, like tires or chains & sprockets. Too many variables between different rider styles/usage (and in the case of chains & sprockets, individual owner's maintenance practices). For example, aggressive sport riders will use up a set of brake pads sooner than a commuter would.
 

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another eg of brake pad wear - returning to the saddle on cbr250r [last bikes cb750/4's] must have brought habit of lightly resting boot on brake pedal part of prep for corner etc entry, also relying on engine braking as riding habit..
anyway at a service mechanic found rear pad worn down [front hardly worn] even tho front is my go-to brake.. realized habit of touching brake lever on entries etc.. thereafter kept right foot on peg, no further pad wear...


i was experienced rider,, but light weight cbr250r didnt need extra setup for entries etc.. another eg of an unexpected brake pad wear situation..
[since then, incl 2 cbr300r's rear hardly ever used in riding]
 
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