10,000 hours is 416 days. They may be fudging the numbers by including simultaneous tire testing as sequential (look, we tested 4 tires for 2,500 hours = 10,000

10,000 hours is 416 days. They may be fudging the numbers by including simultaneous tire testing as sequential (look, we tested 4 tires for 2,500 hours = 10,000 hours!).