The best way to replace the tires and tubes on your moped

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Estimated read time: Calculating... | Originally published: 15 April 2024 | Latest update: 19 May 2026

The best way to replace the tires and tubes on your moped

Replacing a tire or inner tube on a Puch moped is a job most home mechanics can do, but it is also one of those jobs where a small mistake can immediately puncture a brand-new tube.

This guide explains the complete process in a clean workshop format: remove the wheel, deflate the tube, remove the tire, inspect the rim, fit the new tube, seat the tire correctly and reinstall the wheel safely.

Quick answer: Remove the wheel, let the air out, start tire removal at the valve, pull the inner tube out carefully, inspect the rim and tire, use tire grease or mild soap for mounting, lightly inflate the new tube before fitting, avoid tire levers during final assembly, check the tire bead line all the way around, then reduce the tire to normal riding pressure before riding. If you are planning to re-use the tube, keep a small amount of air in it so it keeps its shape.

Watch the Puchshop workshop video, then use the step-by-step guide below while working on your own wheel.

When should you replace a Puch tire or inner tube?

Old Puch mopeds often still run tires and tubes that have been fitted for years. Even when the outside of the tire looks usable, the inner tube can become weak, dry or leaky around the valve.

A leaking valve, slow pressure loss or cracked rubber is a good reason to stop riding and check the wheel before the tire lets you down on the road.

Situation	What to look for	Recommended action
Inner tube problem	The valve leaks, the tube loses pressure overnight, the tube has been pinched, or you are fitting a new tire.	Replace the inner tube and inspect the inside of the tire and rim before mounting.
Tire problem	The rubber is cracked, the tread is worn, the sidewall is damaged, the bead is damaged, or the tire has become hard from age.	Replace the tire and fit a new tube if the old one is aged, damaged or questionable.
Old or unknown moped	You bought an old Puch, restored a Puch, changed wheel bearings, or prepared the moped for a longer ride.	Inspect everything before riding: tire, tube, rim, valve, rim tape, brake and axle hardware.

Parts, tools, tire size and rim type

Check the tire size before ordering parts. Many Puch Maxi models use small moped tire sizes such as 2.00, 2.25 or 2.50 depending on the model, market and setup. A wider tire can fit in some cases, but it can also make assembly harder and increase the chance of pinching the tube.

Also check whether your wheel is a cast wheel or a spoked wheel. On a clean cast wheel, there are no spoke ends inside the rim. On a spoked wheel, old or missing rim tape can quickly damage a new inner tube.

Part or tool	Why you need it	Shop
Correct tire size	The tire must match your Puch model, rim size and available frame clearance.	Shop Puch tires
Correct inner tube	Make sure the tube size, valve type and valve angle match your rim.	Shop inner tubes
Tire grease or mild soap	Lubricates the bead so the tire can seat correctly without damaging the tube. Do not use WD-40 on rubber.	Shop tire tools
Valve-core tool	A valve cap with slots, or a separate valve-core tool, lets you remove the valve core and fully deflate the tube.	Shop tire tools
Tire levers	Useful for removing the tire, but they should be avoided during final mounting where possible.	Shop tire levers
Rim tape for spoked wheels	Spoked wheels need rim tape because spoke nipples can damage the inner tube. A smooth cast wheel normally does not need rim tape.	View rim tape
Pump or compressor with pressure gauge	You need controlled pressure to seat the tire bead and then set the final riding pressure.	Shop tire tools

Important: A wider tire can sometimes fit, but it may also make mounting more difficult and increase the risk of trapping the tube between the bead and the rim. Always check clearance before riding.

Step-by-step: replace the tire and inner tube

Workshop steps:

Remove the wheel. Put the moped on a stable stand. Release the brake connection, loosen the axle nut and move the chain out of the way. Take note of spacers, washers and chain tensioner positions so everything goes back in the same order.
Let all air out of the tire. Remove the valve cap and valve core so the tube is completely deflated. A valve cap with slots can often be used to unscrew the valve core.
Dislodge the tire bead from the rim. Push the tire sidewall down into the center of the rim. Work around the wheel until the tire is loose on both sides.
Start removing the tire at the valve. This is important. If you start in the wrong place, the tube can pull against the valve and damage it. The video advice is simple: start at the valve when removing the tire, and finish at the valve when mounting it.
Use tire levers carefully during removal. For disassembly, tire levers are often needed because your fingers cannot get under the bead. Work slowly and keep the lever away from the tube as much as possible.
Remove the valve nut and pull the tube out. Unscrew the valve nut, push the valve into the rim and pull the inner tube out of the tire.
Inspect the tire and rim. Check the inside of the tire for sharp points, cracks, old rubber pieces or debris. Check the rim for corrosion, sharp edges and rim tape condition. On spoked wheels, replace damaged rim tape before fitting the new tube.
Prepare the new tube. Add a very small amount of air so the tube takes shape. It should be round enough to sit inside the tire, but not fully inflated.
Fit the tube into the tire. Place the valve through the rim and fit the tube inside the tire without twists. Do not tighten the valve nut hard against the rim during assembly. Leaving a nut trapped under the rim edge can pinch the tube.
Use tire grease and mount the tire by hand. Lubricate the bead with tire grease or mild soap. Push the tire back over the rim by hand where possible. Using tire levers during final assembly is the easiest way to puncture the new tube. Mechanics tip: if you are having trouble mounting it by hand, and if the rim is flat on the ground, try standing on the tire and walking around it carefully.
Seat the tire and check the bead line. Inflate the tire enough for the bead to pop into place. Watch the molded line near the rim on both sides of the tire. The line should run evenly around the rim. If it sits high in one area and low in another, deflate the tire, add more tire grease and correct it.
Set the riding pressure. After the bead is seated, reduce the tire to normal riding pressure. Around 2.0 to 2.1 bar is a good starting point for many Puch Maxi road setups, but rider weight, tire type and road conditions matter.
Reinstall the wheel. Refit the wheel straight, reinstall the chain, brake anchor, brake connection, spacers and axle hardware. If the front wheel has a speedometer drive, make sure it is spaced correctly. In the video, the tip is to install a nut on the axle first so the speedometer drive has the correct distance for the connection.
Tighten and test. Tighten the axle nuts securely. As a workshop reference, the Puch frame torque list gives 27 Nm for front and rear axle mounting, but always confirm the correct value for your model and hardware. Spin the wheel, check chain tension and test the brake before riding.

Mistakes, pressure and final safety check

Common mistakes that puncture a new inner tube

DON’T use WD-40 as tire mounting lubricant. It is useful for many workshop jobs, but not for tire rubber. Use tire grease or mild soap instead.
Pinching the tube between the tire bead and the rim.
Using tire levers too aggressively during final assembly.
Leaving the lower valve nut trapped inside the rim area during mounting.
Fitting a tire that is too wide for the rim or frame clearance.
Forgetting rim tape on a spoked wheel.
Inflating the tire and riding away without checking the bead indicator line around the full rim.

Recommended tire pressure for a Puch moped

For a standard Puch Maxi road setup, around 2.0 to 2.1 bar is a practical starting point for normal road-use.

Do not treat this as one fixed rule for every rider and every tire. A heavier rider, a different tire, wet roads, rough roads or very cold weather can change what feels safe and stable. Always check the tire sidewall and use sensible pressure for your setup.

Final safety check before riding

Check these before the first ride:

The bead indicator line is even on both sides of the tire.
The valve sits straight and is not pulled at an angle.
The wheel spins freely without rubbing.
The brake works correctly and the brake anchor is fitted.
The chain is correctly tensioned and aligned.
The axle nuts are tightened securely.
The tire pressure is set for road use, not left at the high seating pressure.

Replacing your Puch tire or inner tube?

Check the correct tire size, inner tube, rim tape and mounting tools before you start. The right parts make the job easier and help prevent a pinched tube.

Shop Puch tires Shop inner tubes Shop tire tools Always confirm your tire size, rim size and valve type before ordering.

FAQ: Puch moped tire and inner tube replacement

Do I need tire levers to replace a Puch tire?

You usually need tire levers to remove the old tire, but try to mount the final part of the tire by hand. Tire levers can pinch and puncture the new inner tube.

Should I use WD-40 to mount a moped tire?

No. Do not use WD-40 on the tire or inner tube. Use tire grease or a small amount of mild soap because it is safer for rubber and helps the bead seat properly.

Does a Puch wheel need rim tape?

A spoked wheel needs rim tape to protect the tube from spoke nipples and sharp edges. A smooth cast wheel normally does not need rim tape, but you should still inspect the inside of the rim.

Why does my new inner tube leak after installation?

The most common causes are a pinched tube, a damaged valve, a sharp rim edge, missing rim tape on a spoked wheel, or using tire levers too aggressively during mounting.