The rear tyre on my commuter bike is wearing out a lot quicker that the front. During February and March I had three punctures in six weeks, all in the rear.
Following a recent ride to Kurnell the rear tyre slowly deflated. Another puncture! While repairing the puncture I usd the opportunity and swapped the tyres. Worn rear tyre on the front, near new looking front tyre moved to the back.
Great. That should mean less punctures.
Last weekend I did a ride near Camden, out to the Lake Burragorang lookout and back. Nearing the end of the ride the front tyre deflated. Yes, that's where the worn rear now lives. Repaired the tube and checked the tyre, inside and out, for anything that could cause the puncture. All clear.
Then another puncture yesterday. Slowly deflating front tyre on the commute home. Again no cuplrit found on either the inside or outside of the tyre.
Then today another puncture. Two hours after arriving at work the front tyre was flat.
When repairing the latest puncture before the commute home I again checked the tyre inside and out. Nothing sharp.
Ok, something else needs to be done. So I looked for every little slice or nick in the tyre tread and squeezed each open. Doing that I found three very small pieces of glass hiding out of sight. None was protuding on the inside or outside of the tyre. The latest three punctures were very small holes. I assume that normal pressure and impacts on the tyre during a ride could cause these small pieces of glass to penetrate through and create a small hole in the tube. Sneaky little buggers!
So from now on I should probably be checking the tyres on a regular basis looking for cuts and, inside each cut, for glass or whatever caused the cut. And I should do this before punctures occur.
Oh,and I'll be ordering some schwalbe marathon plus tyres soon. Those little buggers poking holes in my inner tubes will have to work a lot harder to get through those new tyres (hopefully).