Toyo Proxes 4 Treadlife

What is the approximate mileage I will be able to get out of my Proxes 4's? I do drive slightly hard on them and have only done 1 burnout with the tires?

Also the burnout I did was 3,000-3,500 rpm's and I sat with the brakes on letting the tire spin for 15-25 seconds, how much life did that take off?

Thanks

the burnout maybe took off 5000 miles of regular driving or 1000 miles of hard driving.