Like was already said, depends on conditions and road crossings. Brand of carbide matters as well. My last set of Bergstrom triple points, ridden 90% from Wausau north and 10% in Rock Co (Wisconsin) were about half to 2/3 worn with 3500 miles on them. Had I not sold the sled I expected to get around 5000 miles out of them. They're not cheap, but they don't wear like other brands I've tried.