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.