What Changes on Gravel
Gravel riding adds three things a road ride rarely meets: fine dust, mud and water. Every maker below says harder conditions mean shorter intervals, but none publishes a multiplier for dust or mud. Be wary of any gravel schedule that quotes one, because we found no maker or established outlet that does.
The published pairs that do exist are these:
| Part | Normal or dry | Wet, muddy or harsh | Source |
|---|
| Hubs | Every 6 to 12 months | Every 3 months | Chris King |
| Wax on a chain | 250 to 350 miles on average, 500 to 800 miles in good conditions | As little as 50 miles in the worst conditions | Silca |
| Wax on a chain, off-road | About 300 km on dry road | By the 6 to 8 hour mark at most | Zero Friction Cycling |
| Tubeless sealant | 2 to 6 months | Temperature, humidity and the number of punctures it has sealed shorten it | Stan's NoTubes |
BikeRadar notes that dirt acts as a grinding paste in the drivetrain, which is why the chain and its lubricant sit at the top of any gravel schedule.
After a Dirty Ride
A short reset after a gritty or wet ride protects the parts that grit and water reach first. Park Tool's advice on washing is to use only low pressure and a wide spray if you use a hose, and never to aim compressed air at bearings. Chris King adds that pressure washing, rain or submerging a hub can contaminate its lubricant and wear the bearings early.
After the wash:
- Dry the chain. Silca says to dry it thoroughly after riding in water because of rust, and Zero Friction Cycling says to re-wax a wet chain at once.
- Check the tyres for cuts and the sidewalls for damage. BikeRadar's safety check includes sidewalls, tread, sealant and pressure.
- Spin each wheel and listen for rotor rub or a rough bearing.
The Drivetrain on Gravel: Chain, Cassette and Lube
Park Tool gives chain replacement limits of 0.5% for 11-speed and above and 0.75% for 10-speed and below, and notes that manufacturers set their own specifications. Our chain replacement guide has the full table by drivetrain.
Two cautions are specific to gravel bikes. First, not all chain checkers suit SRAM Flattop chains, which are used on 12-speed road and gravel groupsets, because of their oversized rollers (BikeRadar). Use the checker the chain maker specifies. Second, chain wear in grit depends heavily on how you clean and lubricate the chain. Our wax interval guide covers the intervals in detail, and our measurement guide shows how to read a checker.
For lubricant intervals, Silca puts hot-melt wax at about every 15 hours or 300 to 400 km, and Zero Friction Cycling says off-road riders should re-wax by the 6 to 8 hour mark. These are makers and a seller describing their own products, so treat them as guides and re-wax when the chain gets noisy.
Tyres and Sealant on Gravel
Gravel tyres run at low pressure over sharp surfaces, so tyres and sealant are where the schedule differs most from road riding.
Stan's says sealant typically lasts 2 to 6 months and recommends checking or refreshing it quarterly. Schwalbe says its Doc Blue stays active for about 2,000 km or 2 to 7 months depending on temperature, and that it is not suitable for large defects such as cuts or bursts, which are better fixed with a tube. Schwalbe's test is to pierce the tread with a needle and rotate the tyre, and to add sealant if the hole does not seal.
Check pressure before every ride, as BikeRadar advises for gravel tyres. Schwalbe adds that sidewalls often fail before the tread wears out, mostly from low pressure, and that wear on the tread edges rather than the centre points to underinflation. We found no maker that publishes a gravel-specific tyre lifespan. Schwalbe's figure of 2,000 to 5,000 km is for standard tyres, so inspect gravel tyres after every demanding ride instead of waiting for a distance. Our tyre replacement guide covers the signs.
Brakes: Pads, Rotors and Fluid in Grit
Dirt shortens brake pad life. BikeRadar says organic pads suffer degraded performance and faster wear when conditions are wet or dirty, and that sintered pads are more consistent in wet and dirty conditions.
SRAM's troubleshooting guidance says to replace pads when they are under 3 mm in total thickness, counting the backing plate. That is a different measure from the 0.5 mm of friction material that our brake pad guide quotes for Shimano and SRAM, so check which measure your pad's maker uses. SRAM also warns that dirt can stop the caliper pistons moving freely, and that contaminated pads need replacing along with the rotors.
Brake fluid is a calendar job. SRAM's service sheet says to bleed DOT brakes once a year and mineral oil brakes every two years, with shorter intervals for demanding terrain, climate and riding style. Our brake fluid guide has the maker intervals side by side.
Hubs, Bottom Bracket and Headset
Bearings are the parts riders forget. Chris King lists service every 6 to 12 months in normal, dry conditions and every 3 months in wet or muddy ones, and says to service more often after extreme or prolonged wet riding. CeramicSpeed lists 5,000 to 10,000 km for standard bottom brackets, with yearly as the minimum. A Trek dealer's chart puts the headset on a yearly check. See our wheel bearing guide and bottom bracket service guide.
If you cross streams or ride in heavy rain often, use the wet figure for the hubs. We found no maker that gives a separate interval for water crossings, beyond Chris King's advice to service sooner.
Hanger, Thru-Axles and the Pre-Ride Check
BikeRadar describes the derailleur hanger as a sacrificial part that bends or breaks in an impact. Park Tool says to check derailleur hanger alignment after an impact such as a crash, a fall or rough handling, and also when shifting stays poor after the indexing and limit screws have been adjusted. Our derailleur hanger guide covers what bends a hanger on gravel and bikepacking trips.
Park Tool notes that a secure thru-axle is especially critical on disc brake systems. BikeRadar's pre-ride check runs from the front hub to the rear wheel in eight sections, and includes securing the thru-axle, checking the tyres and sealant, spinning the wheel for rotor rub and squeezing the levers. Spongy hydraulic brakes may need bleeding.
Signs a Gravel Bike Needs Servicing Early
Intervals are maximums. Bring the job forward when you see any of these:
- The chain skips under load, or shifting becomes slow and noisy.
- The brake lever feels spongy, or the brakes rub or squeal after a wash.
- A hub feels rough or gritty when you spin the wheel, especially after a wet ride.
- A tyre keeps losing pressure, or sealant has dried to crumbs when you open the valve.
- The bike has had a crash, a fall or a hard hit on the drivetrain side.
How Componentry Tracks a Gravel Bike Schedule
A gravel bike runs on distance, time and conditions together, and a paper schedule cannot follow all three. Componentry adds the distance and ride time from every Strava, Garmin or Wahoo ride to each part on the bike you rode. You set the interval by distance or by time, and you get a reminder before the part is due. Logging a service resets the counter.
Use shorter intervals for the parts that grit and water reach first, such as the chain and hubs, and set a calendar reminder for sealant, brake fluid and the yearly bearing check. Riders with a road bike and a gravel bike get a separate schedule for each.
Gravel Bike Maintenance: Sources and Related Guides
Related Componentry guides:
Sources:
