The Case for Banning Disc Brakes from Pro Racing (Just Kidding… Mostly)

For the better part of a decade, professional road cycling has been quietly drifting away from the rim brake. What started as a trickle of wild-eyed prototypes at Paris-Roubaix has become a waterfall, with the UCI effectively mandating disc brake systems across WorldTour racing. As a result, the modern peloton glides down cols and through town centres with a hushed, almost apologetic quality. Gone is the metallic shriek that used to punctuate every attack, every descent, every nervous moment when a domestique overshot a corner. Some people think that silence is progress. I think it is a national tragedy, and I have the spreadsheet to prove it.

I should clarify, before the comments section lights up faster than a dyno-hub on a descent of Mount Buller, that I am not actually advocating for a ban. I am a lover of cycling, not a legislator, and my legal training peaked when I successfully argued that a mid-ride coffee stop was non-negotiable. What follows is a tongue-in-cheek lament, written from a sun-drenched corner of Melbourne, about the things the pro peloton lost when it traded its rims for rotors. By the end, I will sheepishly admit that disc brakes are brilliant, and that the only thing we should be banning is bad coffee at the cafe stop. Promise.

The Vanishing Symphony of Skidding Tarmac

If you grew up watching cycling in the late nineties or early noughties, you will remember the sound. Riders would dive into a hairpin, modulate the brake hood, and the resulting high-pitched wail would ricochet off the roadside trees like a parrot with strong opinions. Television producers loved it. Commentators reached for adjectives like "desperate" and "committed". The sound told you everything you needed to know about the effort, the gradient, the consequence. A descending ride into a technical finish would leave your speakers ringing for minutes.

These days, the same descent is an aural disappointment. Disc brakes, being enclosed, simply do not sing. A rider could be sailing through a switchback at 80 km/h and the audio feed delivers nothing but wind noise and the gentle whir of freehub pawls. The drama is gone. We are left watching a mute movie, and I am not convinced we are better off for it. The Tour Down Under's famous descent of Willunga Hill used to be accompanied by a chorus of squealing carbon rims. Now it sounds like a library that happens to be going downhill very quickly.

Of course, the absence of noise is also a safety improvement. Cyclists in Sydney traffic do not need a rim-brake fanfare announcing their approach. But for the spectacle of pro racing, the silent rotor is a real loss. It is the difference between watching a bullfight and watching someone quietly close a spreadsheet.

When the Rains Come to Melbourne (and They Always Do)

Melbourne's weather is famously four seasons in one day, which is a cliché that exists because it is true. Riders rolling out from Princes Bridge at 7am might encounter fog, drizzle, sunshine, hail, and a southerly buster before their second coffee stop. In those conditions, rim brakes used to struggle. Wet rims meant long, terrifying descents of the Old Gippsland Road, pads that needed warming up like a diesel engine, and the occasional tramline slick that would have even the most experienced riders gripping their hoods like a koala on a eucalyptus branch.

Disc brakes handle this nonsense brilliantly. Rotors dry themselves with a few firm lever pulls, pad compound resists the dreaded glaze that used to afflict older resin pads in persistent rain, and modulation remains consistent when the heavens open over the Dandenong Ranges. The same cannot be said of rim systems. I have seen club rides in Brisbane turn into gentle rolling exhibitions of caution because the carbon clinchers simply refused to bite. Riders would tip-toe down hills that they would normally attack, apologising to each other as they ghosted past driveways.

That said, disc brakes are not perfect. The infamous squeal that used to come from rims has merely been replaced by the embarrassing judder that can come from contaminated rotors. A quick lube of the chain near the rotor, a stray bit of degreaser, and suddenly your front brake sounds like a banshee having a bad day. The sport's mechanics at the Tour Down Under became very good at avoiding this. But it is a reminder that engineering trade-offs never disappear. They just change clothes.

The 200-Gram Problem (And Why I Keep Bringing It Up)

Here is where I must confess a certain obsession. Pro cycling is a sport of marginal gains, and a pair of disc brake systems with rotors, calipers, and the associated hardware typically add somewhere between 150 and 300 grams to a bike compared to a high-end rim brake setup. That might not sound like much when you are walking to the bakery, but on the long climbs of the European spring, or a brutally hot ascent of Mount Hotham during a local Fondo, every gram matters. Engineers at the top teams have spent careers shaving grams from bottle cages and derailleur hangers. The arrival of disc brakes has undone some of that work.

And the weight lives in the worst possible place: low down on the frame, around the bottom bracket and centre of gravity, where it affects handling more than a few grams on the saddle or stem. Bikes feel lazier to spin up out of the saddle. Acceleration out of corners on a criterium circuit like the one used for the Cadel Evans Great Ocean Road Race is noticeably blunted. The pros have compensated with even stiffer carbon frames and even lighter wheels, but the trade-off is real.

The counter-argument, of course, is that braking power offsets climbing weight. A rider descending confidently at 90 km/h can carry more speed into the next climb, recovering the time lost on the ascent. There is also the matter of wider tyre clearance, which disc brakes permit, allowing riders to run 28mm or even 30mm tyres at lower pressures for better rolling efficiency on rough Australian roads. So the weight penalty is partially absorbed. But it has not vanished. I am allowed to grumble.

A Modest List of Grievances Against Disc Brakes

Before I capitulate entirely, please allow me the indulgence of a formal protest, filed in alphabetical order:

• The constant paranoia of a stray knee pad smearing oil onto a rotor during a mid-race wheel change.
• The awkward moment when a domestique tries to clear a contaminated rotor with a gloved finger, immediately making things worse.
• The visual ugliness of some caliper mounts, particularly on older frames retrofitted with flat-mount adapters that look like an afterthought.
• The rising cost of replacing hydraulic lines and bleeding the system annually, especially for club riders who just want to ride.
• The disappearance of the rim-brake wear indicator, meaning I now need a mechanic to tell me when my rims are tired. I miss the silver groove.
• The occasional squeak on a perfectly dry day that no one can explain, emanating from the front end like a confused possum.

A Modest List of Reasons I Take It All Back

And now, with appropriate ceremony, the defence:

• Disc brakes let riders descend in the wet with the confidence of a local on a Strava segment, even when the surface is more slippery than a politician's promise.
• Tyre clearance up to 32mm means Australian riders can tackle the gravel roads of the Otways or Tasmania's north-east without needing a second bike.
• Modern hydraulic systems are largely maintenance-free for an entire year, which is roughly the length of a Melbourne winter.
• The frame manufacturers have finally embraced the format, and the new generation of carbon superbikes is genuinely stiffer and more compliant than its rim-brake ancestors.
• Disc brakes have democratised descending. Club riders can descend with the assurance that previously belonged to professionals, raising the overall standard and safety of bunch riding.

The case for banning disc brakes, it turns out, is about as solid as a beach cruiser in a southerly. The technology is genuinely superior. The only thing it costs us is a bit of theatre.

If anything is worth banning, it is the practice of solo riding when there are groups waiting to meet you. The real joy of cycling is the shared experience, the friendly dig on the front, the rotating lead-out for the coffee stop, and the slightly exaggerated recounting of climbs afterwards. Sites like LetsRide.co exist precisely for this reason. They match riders with local clubs, weekend bunch rides, gravel expeditions, and training events happening in your suburb. It is, in the truest sense, the antidote to the lone-wolf narrative that even the most entertaining rants occasionally drift towards. So go on, type your postcode in, and meet the bunch. The rim brakes will forgive you, and the rotors will not judge.