You can change a bicycle tyre yourself with basic tools and about 15 to 30 minutes

Changing a bicycle tyre is a skill you can learn in one afternoon with three tools: a tyre lever (or two), a pump, and a replacement inner tube or patch kit. The process is the same whether you have a flat on the road or at home. You remove the wheel, pry the tyre away from the rim, take out the damaged tube, fit a new one, and reinflate. Most people find the hardest part is the first time — after that, the steps become automatic.

This guide walks you through the process for a standard rim-brake bicycle with a valve stem (the small tube sticking out of the wheel). The basic method works for most bikes, though disc-brake wheels come off the same way and go back on the same way.

Key Takeaways

  • You need a tyre lever, a pump, and a replacement inner tube or patch kit before you start — do not try to pry the tyre with a screwdriver or coin.
  • Remove the wheel first by opening the quick-release lever or unscrewing the axle nuts, depending on your bike.
  • Use the tyre lever to pry one side of the tyre away from the rim, then work your way around the wheel to free the entire tyre.
  • Fit the new tube by inserting the valve stem first, then tucking the tube evenly inside the tyre all the way around before refitting the tyre bead to the rim.
  • Inflate to the pressure printed on the tyre sidewall, checking that the tyre sits evenly on the rim as you pump.

Gather your tools and check what you are working with

Before you touch the wheel, lay out what you need. A tyre lever is a flat, slightly curved tool made of plastic or metal that slides between the tyre and rim. Most bike shops sell them in pairs for a few dollars. A pump can be a floor pump (faster, easier) or a hand pump (portable). You will also need either a replacement inner tube that matches your wheel size (written on the tyre sidewall, like 700c or 26 inch) and valve type (Presta or Schrader), or a patch kit if you want to repair the old tube instead.

Look at your wheel to find out how it attaches to the frame. Most modern bikes have a quick-release lever on one side of the axle — flip it open and unscrew the opposite side by hand until the wheel lifts out. Older bikes have axle nuts on both sides that you turn with a wrench. Either way, the wheel should come free without tools once the lever is open or the nuts are loose enough.

Remove the wheel from the frame

For the front wheel, flip the quick-release lever open (or loosen both axle nuts). Squeeze the brake pads together by hand or flip the brake release lever if your bike has one — this creates slack in the cable so the tyre can pass through. Lift the bike and slide the wheel straight down and out of the fork.

For the rear wheel, shift the chain to the smallest sprocket first. Open the quick-release or loosen the axle nuts, then pull the derailleur (the cage that holds the chain) backward with your hand. Lift the bike and slide the wheel down and out of the chain. The chain should stay on the smallest sprocket and not fall off.

Lay the wheel flat on a clean surface. If the tyre is not completely flat, you can press on it to release any remaining air, or straightforward move to the next step.

Pry the tyre away from the rim using the lever

Insert the flat end of the tyre lever under the tyre bead (the edge of the tyre that sits on the rim) about 6 inches away from the valve stem. Push down on the lever handle to pry the tyre away from the rim. The tyre should roll up and over the edge of the rim. Hook the other end of the lever to a spoke so it stays in place and does not slip back.

Move around the wheel about 12 inches and insert the second lever. Pry again and hook it to another spoke. Continue this way, moving the levers around the wheel and prying a little at each point, until one side of the tyre is completely free of the rim. Do not try to pry the entire tyre off at once — small, even movements prevent pinching the tube and damaging the rim.

Once one side is loose, you can usually peel the tyre away by hand. Reach in and pull out the old inner tube. Check inside the tyre for thorns, glass, or sharp objects that caused the flat — run your fingers carefully along the inside surface. If you find something, remove it. If you do not find anything, the tube may have straightforward worn out or the valve may have failed.

Fit the new or patched tube into the tyre

Inflate the new tube just enough so it holds its shape — about 20 to 30 percent of full pressure. This makes it easier to fit without twisting or pinching. Insert the valve stem through the hole in the rim first. This anchors the tube and prevents it from sliding around.

Tuck the tube evenly inside the tyre all the way around the wheel. Work your way around, making sure the tube sits flat and does not bunch up or fold over itself. Pay special attention near the valve stem — the tube should not be twisted there. Once the tube is seated, check the entire circumference one more time before you refit the tyre.

Refit the tyre bead onto the rim

Starting opposite the valve stem, push the tyre bead back onto the rim with your hands. Work your way around the wheel, tucking the tyre edge under the rim lip. The last section, near the valve stem, will be tight — this is normal. Push the valve stem up into the tyre to create slack, then roll the final section of tyre onto the rim.

Check that the tyre bead sits evenly on the rim all the way around. Look at the line where the tyre meets the rim — it should be the same distance from the rim edge at every point. If one section is higher or lower, deflate slightly, work that section loose, and retuck it. This step prevents the tyre from rubbing or sitting crooked when you inflate.

Inflate the tyre to the correct pressure

Attach your pump to the valve stem. For a Presta valve (thin, with a small nut at the top), unscrew the nut first. For a Schrader valve (like a car tyre), straightforward push the pump on. Inflate slowly and watch the tyre as it fills. The bead should roll smoothly onto the rim and sit evenly. If you see a bulge or wrinkle on one side, stop, deflate, and retuck that section.

Inflate to the pressure printed on the tyre sidewall — usually between 40 and 100 psi depending on the tyre type and your weight. Use the gauge on your pump to check. Once you reach the target pressure, remove the pump and replace the valve cap if your bike has one.

Reinstall the wheel and test before riding

For the front wheel, lift the bike and slide the wheel up into the fork. Align the axle with the dropouts (the slots on the fork) and push down until the wheel sits flush. Close the quick-release lever or tighten the axle nuts by hand, then check that the wheel does not move side to side. Flip the brake release lever back if you opened one earlier.

For the rear wheel, pull the derailleur backward and lift the chain onto the smallest sprocket. Slide the wheel up into the chain and seat the axle in the dropouts. Close the quick-release or tighten the axle nuts. Spin the wheel to make sure it does not rub on the brake pads or frame.

Spin the wheel a few times by hand and listen for any rubbing. Squeeze the tyre with your hand — it should feel firm and not squishy. Take a short test ride in a safe area before heading out on the road. If the tyre feels flat or the wheel wobbles, stop and check the pressure and alignment.

Frequently Asked Questions

What is the difference between a Presta and Schrader valve?

A Presta valve is thin and has a small nut at the top that you unscrew before inflating. A Schrader valve is wider and looks like a car tyre valve — you just push the pump on. Check your old tube or look at the hole in your rim to see which type you need. They are not interchangeable, so buying the wrong tube will not fit.

Can I patch the old tube instead of replacing it?

Yes, if the hole is small and not near the valve stem. Dry the tube completely, roughen the area around the hole with the sandpaper in the patch kit, explore the glue, wait the time shown on the kit (usually one to two minutes), then press the patch on firmly for 30 seconds. Let it cure for five minutes before reinstalling. Patches work well for small punctures but are less reliable than a new tube for large holes or valve damage.

Why does my tyre keep going flat?

Check inside the tyre carefully for thorns, glass, or sharp objects — these are the most common cause. If you find nothing, the rim tape (the strip covering the spoke holes) may be torn or missing, allowing the tube to pinch. You can also inspect the tyre itself for cuts or damage. If the valve is leaking, you will hear a hiss when you press on it — in that case, the tube cannot be repaired and must be replaced.

How tight should I inflate the tyre?

Always inflate to the pressure printed on the tyre sidewall, not the rim. This pressure range accounts for your weight and riding style. Underinflating makes the tyre squishy and prone to pinch flats. Overinflating makes the ride harsh and can damage the tyre. If you are between sizes, start at the lower end and adjust based on how the bike feels.

What if the tyre will not seat on the rim?

Deflate completely and check that the tube is not twisted or bunched inside the tyre. Make sure the valve stem is straight and not bent. Reinflate slowly and watch the bead — if it is not rolling onto the rim evenly, stop, deflate, and retuck that section. Sometimes a small amount of soapy water on the tyre bead helps it slide onto the rim more easily.