Some truth in that ... but it's not quite as black and white as he indicates
I never bother to drill my road car's discs (partly cos I drive them til they drop ) ..... I have seen cracking on drilled discs .... but then again I've seen cracking on solid discs too .... for my race car, being a hillclimb car it doesn't cover the mileage, or run the brakes particuarly hot ... I'm more interested in initial bite especially into the first corner 😮 ... and consistency .... I have no complaints on either score with the drilled discs. I'll certainly look at slotting the discs next time round .... the only reason I didn't after my last accident (which smashed a disc along with a lot else!!) Was that I needed the replacements in short order and my local guy doesn't do slotting.
Like much else to do with 'performance' we all have opinions and swear by our favourites but never have the spare time or cash to do our own like for like destruction testing (as I guess the guy above doesn't) ..... what seems to work for you makes you feel at ease when you strap yourself in .... and that calmness is probably worth more tenths than whether your discs have holes in or not 😁
K
