Originally Posted by
MDS61
I am the OP. Postscript: I finally bought new wheels with HED Belgium Plus rims over DA hubs, despite excellent advice from this thread that I put scarce funds elsewhere. Now I get a pinch flat every 2 out of 3 rides instead of every 50th ride. Any bump of more than 2 cm seems to cause. I have increased the pressure to 90 psi in rear wheel, well above that recommended by HED, and am still getting flats.. My flat fixing technique has improved, but that is not the area in which I had planned to specialize. I have checked for rim strip damage, thorns, tire damage and have not found an answer. I am on the heavier side at 205 pounds. However that does not seem so far from the mainstream as to explain this. Any ideas? I do like the wheels when I am able to ride on them. Would it damage the rims if I try 100 psi? Thanks.
You mention your “flat fixing technique”. You made no specific mention of your tire/tube installation technique so I will bing this up: are you verifying that the tube is not pinched under the tire bead before inflating? How soon after installing the new tube have you been getting these flats? Have you analyzed the punctures location and size in order to come up with a cause? If I were to take a guess I would say that you might be getting snakebite type punctures from bits of inner tube trapped under a tight tire bead. Any chance this could be the cause of the frequent flats?