As jimlin points out. Depending upon the what type of driving you do, mileage will vary! My tire dealer tells me due to city driving, loads I carry etc, I and other landscape contractors get 20-30% less miles than ave person. If you do ALL freeway miles, you get an additional 20-30% vs ave.
Cummins12v from his comments, along with a few others on here do MANY miles non stop. I on the other hand, stop and go every .25-.5 miles. Every stop and go, turn I make, the tires skid to a stop, spin upon take off, fronts skid sideways turning.....granted NONE of our Asset's can feel this skidding etc, but it occurs. So I get less miles than the ave person.
Meanwhile not doing that work any more, I drive a van around Puget sound doing marine sales and parts delivery. My last van, an MB Sprinter, I put close to 80,000 using Firstone HT tires. How many of you have complained about 30-40k miles only?!?!??
One person earlier said GY SRA tires were good....got a set with new to me used GM 1500 in February. On hard dry surfaces, they work well. Rain wetted, slush, black ice, I've never had a tire that slips and spins as much as these POS tires. I've had GYs before. Mostly Uni-Steel versions. No complaints!
Mileage, traction ability can and will vary depending upon what and how you drive, where you drive etc. What works for me, may not for you, vice versa.
Marty