How Change Bicycle Tire
A practical step-by-step guide to how change bicycle tire, including preparation, instructions, common issues, tips, and next steps.
How Change Bicycle Tire
Getting a flat tire is one of the most common issues cyclists face, but it doesn't have to ruin your ride. Learning how to change a bicycle tire is a fundamental skill that saves you time, money, and the frustration of being stranded. This guide provides clear, practical instructions for removing a punctured inner tube, inspecting the tire, and fitting a new tube correctly. Whether you're at home or on the side of the road, these steps will help you get back to riding with confidence.
Fast Answer
- Get Ready: Remove the wheel from your bike's frame.
- Take it Apart: Fully deflate the tube and use tire levers to pry one side of the tire off the rim.
- Swap and Check: Remove the old tube, check the inside of the tire for sharp objects, and insert a slightly inflated new tube.
- Put it Back: Reseat the tire onto the rim by hand, inflate to the correct pressure, and reinstall the wheel.
Before You Start
Preparation is key to a smooth and successful tire change. Taking a few moments to gather your tools and check your components will prevent common mistakes and make the process much easier.
What You Need
- A new inner tube: Make sure it's the correct size for your tire and has the right valve type (Presta or Schrader) for your rim. The size is printed on the side of your tire.
- Tire levers: A set of two or three plastic levers is essential. Avoid using metal tools like screwdrivers, which can damage your rim or the new tube.
- A pump: You'll need a pump with a head that matches your tube's valve type. A floor pump is easiest at home, while a mini-pump is necessary for roadside repairs.
- Spanner or Allen keys (if required): Most modern bikes use quick-release skewers that don't need tools. However, some wheels are secured with nuts or thru-axles that require a spanner or Allen key to remove.
- Optional extras: A pair of gloves can keep your hands clean, and a small rag is useful for wiping down the tire and rim.
Safety, Timing, and Context Checks
- Find a safe spot: If you get a flat while riding, move well away from traffic to a stable, flat area.
- Note your gears: Before removing a rear wheel, shift the chain onto the smallest cog at the back. This makes removing and reinstalling the wheel much easier.
- Check valve type: Identify whether you have a taller, thinner Presta valve or a shorter, wider Schrader valve (like a car tire). Your new tube and pump must match.
- Brake type: If you have rim brakes, you will likely need to open a quick-release lever on the brake caliper to create enough space for the tire to pass through. Disc brakes do not require this step.
Step-by-Step Instructions
Remove the Wheel from the Bike
First, you need to get the wheel off the frame. If you have rim brakes, start by opening the quick-release lever on the brake caliper to widen the brake pads. For a rear wheel, ensure you've shifted the chain to the smallest rear cog.
Next, open the wheel's attachment mechanism. This is usually a quick-release lever; flip it to the 'open' position and unscrew it a few turns. If your wheel has nuts, use a spanner to loosen them. For thru-axles, you'll need to unscrew and pull the axle out completely. With the axle loose, gently guide the wheel downwards and out of the frame's dropouts. For a rear wheel, you may need to pull the derailleur back slightly to give the chain clearance.
Fully Deflate the Old Tube
To get the tire off the rim, the inner tube must be completely empty of air. The method depends on your valve type:
- For a Presta valve: Unscrew the small lock nut at the tip. Press down firmly on the pin in the centre until all the air has escaped.
- For a Schrader valve: Use a small tool (like the tip of a tire lever or a key) to press down on the pin inside the valve stem until the hissing stops.
Once deflated, go around the tire and push the sides inwards, away from the rim. This breaks the bead's seal and creates slack, making it much easier to insert the tire levers.
Use Tire Levers to Remove One Side of the Tire
Take your first tire lever. Starting on the side of the wheel opposite the valve, slide the scooped end under the edge of the tire (the bead). Gently pry it up and over the wall of the rim. Most levers have a small hook on the other end; use this to hook the lever onto a spoke to hold it in place.
Take your second lever and insert it about two inches away from the first. Pry this section of the bead up and over the rim as well. At this point, the tire should be loose enough that you can slide the second lever around the entire circumference of the rim, freeing one side of the tire completely.
Remove the Old Inner Tube and Inspect the Tire
With one side of the tire off the rim, locate the valve and push it up through the valve hole. Now you can simply pull the old inner tube out from between the tire and the rim.
This next part is the most critical step for preventing another flat. You must find what caused the puncture. Carefully run your fingers along the entire inside surface of the tire. Be slow and cautious, as you're looking for something sharp. If you don't feel comfortable using your bare fingers, use a rag. Visually inspect the outside of the tire as well. Once you find the culprit—a piece of glass, a thorn, a nail—remove it completely. Also, take a moment to check that the rim tape (the strip covering the spoke holes inside the rim) is smooth and has no tears.
Prepare and Insert the New Inner Tube
Take your new inner tube and unscrew the valve cap. Using your pump, inflate the tube with just a few pumps of air—enough to give it a round shape, but not so much that it's firm. This small amount of air helps prevent the tube from twisting or getting pinched under the tire bead during installation.
Start by inserting the valve of the new tube through the valve hole in the rim. Then, gently tuck the rest of the lightly inflated tube into the space inside the tire, working your way all around the wheel.
Reseat the Tire Bead onto the Rim
This step often requires some muscle, but technique is more important than strength. Start seating the tire bead back into the rim with your hands, beginning at the side opposite the valve. Use both thumbs to push the bead up and over the rim wall. Work your way around the wheel, alternating sides as you go.
The last 12 inches will be the tightest and most difficult. To make it easier, go back around the seated part of the tire and pinch the bead into the deepest part of the rim channel (the centre). This creates more slack. Now, use the palms of your hands to roll the final section of the bead over the rim wall. Avoid using a tire lever for this, as it's a very common way to pinch and puncture your brand new tube.
Check for Pinches and Inflate Correctly
Before you inflate the tire fully, do one last check. Go around both sides of the wheel and push the edge of the tire away from the rim, looking into the gap to ensure the inner tube is not trapped under the bead. Also, check that the valve stem is straight and not angled. A crooked valve can tear at its base.
Begin by inflating the tire to a low pressure, around 20 PSI. Stop and inspect the tire on both sides to make sure it's seated evenly. Look for the thin molding line on the tire's sidewall; it should be an equal distance from the rim all the way around. If it dips down in one spot, the bead is not seated correctly. Deflate, adjust, and reinflate. Once it looks good, inflate the tire to the recommended pressure, which is printed on the sidewall of the tire itself (e.g., "Inflate to 80-120 PSI").
Reinstall the Wheel on the Bike
It's time to put everything back together. Guide the wheel back into the frame's dropouts, making sure it's fully seated and straight. For a rear wheel, you'll need to guide the top section of the chain over the smallest cog while gently pulling the rear derailleur back.
Tighten the quick-release skewer, axle nuts, or thru-axle securely. A quick-release lever should be firm enough to leave a slight imprint on your palm when you close it. If you have rim brakes, remember to close the brake caliper's quick-release lever. Finally, give the wheel a spin to ensure it rotates freely without rubbing on the brake pads or frame. Your tire change is now complete.
Quick Reference
| Situation | Use this | Why |
|---|---|---|
| The last bit of the tire is too tight to get on the rim. | Push the tire bead into the center channel of the rim all the way around. | This creates the maximum amount of slack to help roll the final section on. |
| The new tube gets punctured during installation. | Inflate the new tube slightly before tucking it into the tire. | This gives the tube shape, preventing it from twisting or getting caught under the tire bead. |
| Brakes are rubbing after reinstalling the wheel. | Loosen the axle, ensure the wheel is fully seated in the dropouts, and re-tighten. | Rubbing usually means the wheel is sitting crooked in the frame. |
| You get another flat tire almost immediately. | Re-check the inside of the tire for the original sharp object. | The most common cause of a repeat flat is failing to remove the initial source of the puncture. |
Common Problems When You Change a Bicycle Tire
Even with clear instructions, you might run into a few hurdles. Here are the most common issues and how to solve them.
Pinching the New Tube
A "pinch flat" or "snake bite" during installation is incredibly frustrating. It happens when the inner tube gets caught between the tire bead and the metal rim as you're putting the tire back on. The pressure nips the tube, creating one or two small, parallel holes.
Solution: The best defence is a good offence. First, always add a small amount of air to the new tube before you install it. This gives it structure. Second, avoid using tire levers to force the tire back on. If the tire is too tight, use the technique of pushing the bead into the rim's center channel. Finally, before fully inflating, always double-check around the rim to ensure no part of the tube is visible.
The Tire Won't Come Off or Go On
Some tire and rim combinations are notoriously tight. If you're struggling to get the first bead off with a lever, make sure the tire is fully deflated and that you've pushed the bead into the center channel on the opposite side to create slack. When putting a tight tire on, the same principle applies. Pushing the already-seated sections of the bead deep into the rim's center channel is the single most effective trick.
Valve Stem Damage
If the valve stem is ripped from the tube at its base, it's usually because it was installed at an angle or the tire slipped on the rim under braking forces.
Solution: When installing the tube, ensure the valve goes into the rim straight. After seating the tire but before full inflation, push the valve up into the tire, then pull it back down to ensure the bead isn't sitting on the reinforced base of the valve. This helps it seat correctly.
Advanced Tips for Changing a Bicycle Tire
Once you've mastered the basics, these tips can make the process faster or more robust for future rides.
Patching vs. Replacing an Inner Tube
While this guide focuses on replacing the tube, patching is a valuable skill, especially for carrying fewer spares on long rides. A glueless patch is a quick roadside fix, while a traditional vulcanizing patch kit (with glue) provides a more permanent repair. It's often best to replace the tube on the road and patch the punctured one at home to use as a spare.
Consider a Tubeless Setup
For many mountain bikers and gravel riders, tubeless tires are the ultimate upgrade. Instead of an inner tube, a liquid sealant is used inside the tire. This sealant can automatically plug small punctures from thorns or glass before you even notice them. While the initial setup is more complex, it can drastically reduce the number of flats you get.
Using a CO2 Inflator for Speed
A CO2 inflator uses a small, compressed gas cartridge to inflate a tire in seconds—much faster than a mini-pump. They are excellent for racing or cold, wet days when you want to get moving quickly. However, CO2 molecules are smaller than air, so the tire will lose pressure faster (often overnight). It's always wise to re-inflate with a standard pump later. Be cautious, as the cartridge gets extremely cold during use.
How Change Bicycle Tire FAQ
How often should I change my bicycle tires?
You should change the inner tube whenever it gets a puncture that can't be reliably patched. The tire itself should be replaced when the tread is worn down, you see cracks in the sidewall, or it has suffered a significant cut. For road bikes, this might be after 2,000-5,000 miles; for mountain bikes, it depends heavily on terrain and riding style.
Can I use a slightly different size inner tube?
In an emergency, yes. Inner tubes are stretchy and can often fit a range of slightly different tire widths. However, using a tube that is too narrow can cause it to overstretch and fail, while a tube that is too wide can fold or crease inside the tire, leading to a pinch flat. It's always best to use the size recommended for your tire.
What is the difference between Presta and Schrader valves?
A Schrader valve is wider and is the same type used on cars. It has a spring-loaded pin in the center. A Presta valve is thinner, has a small lock nut at the tip that you must unscrew before inflating, and is more common on road and high-performance bikes.
Why does my tire keep going flat with no obvious puncture?
This could be a few things. You might have a very slow leak from a tiny hole, a faulty valve, or poorly installed rim tape that is allowing a spoke nipple to chafe the tube. Submerge the inflated tube in water and look for bubbles to find a tiny leak. If no leak is found, check the valve and the rim tape.
Final Checklist for Changing a Bicycle Tire
Before you ride off, run through this quick final check to ensure everything is safe and secure.
- Wheel is fully seated: The axle should be all the way up in the dropouts on both sides.
- Axle is secure: The quick-release lever, thru-axle, or axle nuts are properly tightened.
- Brakes are re-engaged: If you opened a rim brake caliper, make sure it has been closed.
- Wheel spins freely: Give the wheel a spin to check for any brake rub or tire wobble.
- Tire pressure is correct: The tire is inflated to the recommended PSI range listed on its sidewall.
- Valve cap is on: Screw the plastic cap back on the valve to keep out dirt and debris.
- Tools are packed away: Don't leave your pump or tire levers behind!
