Winter overhaul

Like every winter I bring the bike inside and clean it thoroughly the best I can and in the same process also replace some parts. As far as my few mechanical knowledge can afford.

I've dismantled the front wheel this morning with the intend to wash the brakes assembly and replace the brake pads. But now I'm having a doubt for the discs. I suspect they're on their last stretch but is my judgment is correct or not?

Should I keep or replace? And if I should replace. Any suggestion to find the replacement.

Hey thanks for the guidance.

I've paid attention for the thikness marker and found: min. 4mm. But the strange thing is that the rotor are already 4mm brand new measured with a precision ruler. So I broke out the micrometer and took some measures to find out the exact thickness and came up with: 0.1254 inch = 3.18516mm on the unused (intact) part of the rotor. I must be somewhat reading the micrometer wrong. Sigh.

Success!

I've made a little research this morning and figured out that the reading measure instructions that come with the micrometer where wrong. Terribly wrong. Causing a misreading. Soooo, now that I can read the micrometer the right way the answers are....

Original thickness of rotor: 0.1703 inch = 4.32562 mm
Worn areas or rotor: 0.1513 inch = 3.84302 mm

So I guess it mean the end of the rotors... Sigh! But hey, they lastest 63000 km.

Now looking around the net for some replacement I am amazed by the amount of scraps peoples try to sale. Repair shop and john doe posting pictures and sometime even measuring the thickness with the micrometer in sight (on the picture) trying to fool us thinking; Wow! these rotors are like brand new. But if you pay attention on how they are taking the measure you soon realise they are measuring the unused area where the pads don't touch the rotors.

Sigh! ....