What happens when you change a tire yourself
Changing a bicycle tire means removing the wheel from the frame, taking off the old or damaged tire and inner tube, and fitting a new tube and tire back on. You do this when the tire punctures, splits, or wears so thin the tread disappears. Most people can learn to do it in 15 to 20 minutes once they have done it once; the first time usually takes longer because you are figuring out how your specific bike comes apart.
The main reason to learn this skill is that punctures happen on rides, not at home. Knowing how to change a tire means you can get moving again instead of walking your bike back. Even if you plan to take your bike to a shop for repairs, understanding the process helps you spot what went wrong and communicate the problem clearly.
Key Takeaways
- You will need a tire lever (or two), a pump, and a replacement inner tube or patch kit; the tire itself only needs replacing if it is split or worn through.
- The valve stem on your inner tube comes in two types — Presta and Schrader — and your pump must match the type you have.
- Removing the wheel requires loosening either a quick-release lever or bolts with a wrench, depending on your bike's design.
- The tire bead (the edge that sits in the rim) can be stiff on new tires; using a tire lever correctly prevents pinching the new tube during installation.
Gather the tools and parts you will need
Before you start, collect everything so you are not hunting for tools mid-repair. You need a tire lever (a flat plastic or metal tool that pries the tire bead away from the rim) — most people carry two because one lever alone is awkward. You need a pump that fits your valve type. You need a replacement inner tube in the correct size (written on the tire sidewall, like 700x25c or 26x2.0) and with the correct valve type.
If you are patching a puncture instead of replacing the tube, you need a patch kit, which includes sandpaper, glue, and patches. Patch kits work for small holes but not for large splits or valve damage. Many riders carry a spare tube and a patch kit so they can patch the old tube later at home and have a backup if they get a second puncture.
Check your valve type before you buy a pump or tube. Presta valves are narrow and have a small locking nut at the top; Schrader valves look like car tire valves and are wider. A pump designed for one type will not seal properly on the other, though some pumps have a reversible head that works with both.
Remove the wheel from the frame
The method depends on how your wheel attaches. Most modern bikes have a quick-release lever on the hub (the center of the wheel). Open the lever by flipping it outward — it should swing freely without needing tools. If it is very tight, you may need to hold the opposite side (the cone nut) steady with your other hand while you open the lever. Once the lever is open, unscrew the cone nut a few turns by hand until the wheel lifts free from the frame.
Older bikes or heavier bikes often use axle bolts instead. You will need a wrench (usually 15mm) to loosen both bolts on either side of the hub. Loosen them a few turns each, then unscrew them by hand the rest of the way. Keep the bolts somewhere you will not lose them — a pocket or a small bag works.
For the rear wheel, you may need to shift the chain onto the smallest cog first so the wheel pulls away from the chain easily. Lift the derailleur (the mechanism that moves the chain) with your hand as you pull the wheel backward and down out of the frame.
Remove the tire and inner tube from the rim
Lay the wheel flat on the ground or hold it in your lap. Let out any remaining air in the tube by pressing the valve. Insert a tire lever under the tire bead (the edge of the tire that sits in the rim groove) about 15 centimeters away from the valve. Pry the bead up and over the rim edge. Hook the other end of the lever to a spoke so it stays in place and does not slip back.
Move around the wheel, inserting the second lever about 30 centimeters away from the first, and pry again. Repeat this process, moving the levers around the wheel, until one side of the tire bead is completely free of the rim. You should now be able to pull the inner tube out by hand. Do not force it — if it is stuck, check that the bead is fully clear of the rim.
Once the tube is out, you can leave the tire on the rim or remove it completely. If you are just replacing the tube, leaving the tire on is faster. If you need to inspect the tire for thorns, glass, or damage, pry the second bead off the rim using the same lever technique.
Inspect the tire and rim for damage
Run your fingers carefully along the inside of the tire, feeling for sharp objects like thorns, glass, or metal shards. These cause punctures and will damage a new tube when ready if you do not remove them. If you find something, pick it out with tweezers or a small tool — do not just pull it out with your fingers because the edges are often sharp.
Check the rim tape, which is a strip of rubber or plastic that covers the spoke holes on the inside of the rim. If it is torn, cracked, or missing, the spoke ends will puncture the new tube. Rim tape is inexpensive and straightforward to replace; if it looks damaged, wrap new tape around the rim before installing the new tube. You can buy rim tape at any bike shop or online.
Look at the tire itself for splits, bulges, or areas where the rubber is worn through to the fabric underneath. If the tire is damaged, you must replace it along with the tube. If the tire looks sound, you can reuse it with a new tube.
Install the new inner tube and tire
Inflate the new tube slightly — just enough so it holds its shape and is not completely flat. This prevents twisting and pinching during installation. Insert the valve stem through the rim hole first, then tuck the tube evenly around the inside of the rim, making sure it is not twisted.
Starting opposite the valve, push one bead of the tire back into the rim groove by hand. Work your way around the wheel, tucking the tire bead into the rim. When you reach the valve, leave a small section of bead loose. Push the valve up into the tire to create slack, then finish tucking the last section of bead into the rim.
If the tire bead is very stiff and you cannot tuck it by hand, use a tire lever as a pry bar — but be extremely careful not to pinch the new tube. Insert the lever under the bead, not under the tube, and pry gently. Move around the wheel, using the lever only where the bead is too tight to move by hand. Once the tire is fully seated, inflate it to the pressure marked on the tire sidewall (usually 80 to 130 psi for road bikes, 30 to 50 psi for mountain bikes).
Reinstall the wheel on the frame
For a quick-release wheel, line up the axle with the frame dropouts (the slots where the wheel sits) and push the wheel up into place. Screw the cone nut by hand until it is snug, then close the quick-release lever. The lever should require firm pressure to close — if it closes too easily, open it and tighten the cone nut a bit more. If it is too hard to close, loosen the cone nut slightly.
For a bolt-on wheel, insert the axle into the dropouts and hand-tighten both bolts. Use the wrench to tighten them firmly, but do not overtighten — you want them snug, not stripped. Check that the wheel is centered in the frame by spinning it; if it rubs on the brake pads or frame, loosen the bolts slightly and adjust the wheel position.
For the rear wheel, make sure the chain is seated on the smallest cog and pull the derailleur back to its normal position. Spin the wheel to confirm the chain does not rub and the wheel does not hit the frame. Squeeze the tire with your hand to double-check the pressure feels right before you ride.
Frequently Asked Questions
What is the difference between patching a tube and replacing it?
Patching works for small punctures (pinhole size) in the tube body but not for damage to the valve or large tears. Replacement is faster and more reliable, especially on a ride. Many riders patch the old tube at home later and keep it as a spare.
How do I know what size tube to buy?
The size is printed on the tire sidewall, like 700x25c or 26x2.0. Write it down or take a photo before you go to the shop. You also need to know your valve type — Presta or Schrader. When in doubt, bring the old tire or tube to the shop and staff can match it.
Can I reuse the old tire if it looks okay?
Yes, if there are no splits, bulges, or worn-through areas. A tire with a small puncture in the tread can be reused with a new tube. If the puncture is on the sidewall or the tire is visibly damaged, replace it.
What if the tire bead will not seat properly after I inflate it?
Deflate the tire completely, check that the tube is not pinched under the bead, and make sure the rim tape is not bunched up. Reinflate slowly while watching the tire bead to confirm it is seating evenly all the way around. If one section stays loose, deflate again and adjust the tube position in that area.
Do I need to replace the tire every time I get a puncture?
No. Replace the tube, inspect the tire for damage, and reuse the tire if it is sound. Only replace the tire if it is split, bulging, or worn so thin the tread is gone. A well-maintained tire can last through several tube replacements.