Starting a BB Duster project

For some weird reason tires are labeled with both metric and english units. 345/55-15 means 345 mm wide, sidewall height is 55% of the section width and 15 inch rim. Seems odd to mix and match dimensions like that but that is how tires are done. I do think it is better than the old system which used letters. F78-14 never made any sense. At least the new system of 205/75-14 lets you know how big the tire is without looking it up on a chart.