From my last three tires that I can remember:
On my Continental GP 4000s 23c tires with Vittoria Superlight tubes, I rode almost 2000 miles over varied terrain without any issues. I got one flat due to glass shard and rode another 1000 miles until I got a sidewall puncture due to some crushed rocks on my rear tire. So, that was it for both tires. 3000 miles.
On my Continental GP TT 23c tires with Vittoria Superlight tubes, I rode 1000 miles over varied terrain without any issue except for some minor nicks and cuts. Then, I got a glass chard on my front wheel. I rode another 500 miles without incident but noticed the tread starting to wear thin on the rear wheel. Then, when I rode over an especially bad road with salt crystals from a salt farm, my tube got a slow leak the next day from where the tread had worn through. So, that was it for both tires. 1600 miles.
On my Vittoria Open Pave EVO CG 24c tires with Vittoria Superlight tubes, I so far have about 800 miles on them. The tread is starting to show some wear. I hope to get at least 2500 miles on this pair.
I am very anal retentive about letting air out of my tires until they are finger soft if I am going to not ride my bike for more than three days and then I pump up my tires to 95 psi front and 105 psi rear on my HED. 23mm wide rim wheels.
Mark