I took my old but tidy VFR for a warrant a couple of years ago, before heading on a 600km trip. At the VTNZ, and it was basically fine, except the tester wouldn't issue a wof, as the back brake disc 'looked maybe a bit thin.' I asked what it actually measured and he replied "I don't know, I can't measure it." I was shocked that a guy that does wof's for a living didn't actually have a micrometer to measure such things. I was told to go to the honda shop, but first went home and measured it myself. It turned out to be .05mm under, so I went to said shop, dragging the brake ever so slightly for the last 2-300 M, heating it up. This put it just over the limit, and I got my wof. After the trip the next day I got another disc @ the wreckers in that town.