Before you start
Removing a front wheel on a disc brake bike is very similar to doing it on a rim brake bike. The difference is that a rotor sits between two brake pads, and you need to avoid disturbing that arrangement. First identify two things:
- Axle type: quick-release skewer or thru-axle. Thru-axles are thicker and screw into the fork.
- Brake type: hydraulic (fluid-filled hose) or mechanical (steel cable).
Have the right tool on hand (many thru-axles need a hex key) and a clean surface for the wheel. Try to keep oil and grease away from the rotor.
Protect the brakes
On hydraulic disc brakes, avoid squeezing the brake lever while the wheel is out. Doing so pushes the pistons and pads closer together, which can make it hard or impossible to slide the rotor back in. A plastic pad spacer (often supplied with new pads) placed between the pads helps prevent this. Many people also use clean, thin cardboard as a stand-in, but make sure it is clean and not contaminated with oil. Avoid sharp metal tools that can scratch the pads or pistons.
Mechanical disc brakes generally pull the pads back with an internal spring, so a spacer is often not needed, though using one does no harm.
Release the axle
Quick-release skewer:
- Flip the lever to the open position.
- Loosen the nut on the opposite side a few turns if needed to clear the fork’s retention tabs.
Thru-axle:
- Open the lever or insert the hex key, depending on the design.
- Unscrew the axle fully and pull it out. Specific steps vary by brand, so see our guide on removing a front wheel without a quick release for the different axle types.
Take the wheel out
Support the bike so the front wheel is off the ground, then lower the wheel straight down out of the fork. The rotor should slip out from between the pads. If the tire is wide or fully inflated, you may need to wiggle it slightly. Do not pull the brake lever once the wheel is out. Rest the bike carefully so the fork does not hit the ground on the rotor side.
Hold the wheel by the tire or hub, not the rotor, since oils from your fingers can contaminate the braking surface.
Putting the wheel back
- Make sure the pad spacer is removed.
- Line the rotor up between the pads and lower the wheel into the fork ends. Take your time, since forcing it can bend the rotor.
- Check the axle seats fully in the dropouts.
- Close the quick release or tighten the thru-axle. Quick-release levers should close with firm resistance and point in a position where they will not snag anything. For thru-axles, tighten to the manufacturer’s recommended torque if known.
- Spin the wheel to check that the rotor does not rub on a pad.
Check brakes before riding
Always test the brake before you ride:
- Squeeze the front lever firmly. It should feel solid and engage the brake.
- Roll the bike forward and brake to confirm it stops.
- Listen for rubbing as the wheel spins. If there is some, loosen the axle slightly, reseat the wheel and retighten. Minor rubbing can sometimes be corrected by adjusting the caliper, though see your manual or a shop.
If the lever feels soft or travels further than normal, do not ride until the brake has been checked.
If the pads have closed up
If you squeezed the lever and the rotor will not fit, do not force it. A plastic tire lever or a similar flat, smooth tool may be used gently to push the pads apart, but be careful not to damage them. If it does not work, a shop can help. Avoid using sharp metal tools on the pads.
Changing a tire on a disc brake bike
You can remove the wheel using the steps above, then change the tire (if it keeps going flat, see why your bike tire keeps going flat) the same way as on any other bike. The disc brake does not usually change the tire process. Keep the rotor clean, and avoid lube or tire sealant getting on it. If your wheel still will not turn smoothly afterward, see what to check when a wheel does not turn properly.
FAQ
How do you remove a bike wheel with disc brakes?
Release the quick release or thru-axle, lower the wheel out of the fork, and avoid squeezing the brake lever while it is out.
How do I get the front wheel off a bike?
Support the bike, release the axle, and lower the wheel from the fork. Disc brake bikes also need care around the rotor.
Does removing a disc brake wheel affect the brakes?
It should not, provided the pads are not pushed together and the rotor stays clean. Always test the brake before riding.