Joined: Jan 2010
Posts: 9,781
Likes: 1,750
From: Northern California
Bikes: Cheltenham-Pedersen racer, Boulder F/S Paris-Roubaix, Varsity racer, '52 Christophe, '62 Continental, '92 Merckx, '75 Limongi, '76 Presto, '72 Gitane SC, '71 Schwinn SS, etc.
I've bought both the inexpensive Duro and Cheng tires off of Ebay, and the Duro tires are much heavier.
Also, on one training ride, I ran over a medium-sized rock that the ride leader didn't think was worth calling out, and the rear Duro tire blew out in the middle of the tread.
I noticed that the casing fabric was extremely coarse from looking at the inside of the tire, so no surprise that the casing didn't fare so well.
I've suffered a few thorn punctures on the Chengs, but the ride is so much nicer that it's worth it.
Another brand that I'll continue to avoid is LHR (Lin Hsin Rubber). A super-coarse casing weave and with exceptionally fast-wearing tread rubber.