A question about how to replace tube-type tires without pinching the tube.
Well, generally speaking…
Applying rust preventative oil under the rim tape works pretty well.
I’m not sure why I have to explain it this way… but I hope it helps as a reference.
First, put just enough air in the tube to maintain its shape.
Then assemble the tube into the tire.
It looks like this.
Apply tire wax to the tire (liquid-based works well since it doesn’t leave residue), then slide the tube halfway and pass the air valve through to the wheel side.
Lock it with the nut so it doesn’t come off.
With this method, you don’t need to pull with a wire, and the work goes faster.
For tube-type tires, I use the tire lever in reverse—the end that lifts up faces the tire side.
I think people who often pinch the tube are probably inserting it the other way. Using it in reverse reduces the chance of pinching.
Ideally, don’t lay the lever down too far. If the lever bend is on the wheel side at this angle, the chance of pinching goes way up.
For tube-type replacement, I keep the lever at about 90 degrees upright. If the tube sits properly in the rim, you don’t need much leverage.
Since the tube goes in first, it rarely sticks out, but check the whole circumference visually.
If you inflate the tire close to the specified maximum pressure to seat the rim firmly, tire runout should be minimal.
Checking the axle runout afterward makes it even better.
For reference!
