165r15 Diameter, 4", a section width of 6. 5" 6. Vintage Tire Size Conversion Chart Use the following chart to figure out the closest modern tire size to your car's original tires. 1" 4. 3 x 2) plus the rim diameter (15 inches), culminating in an overall diameter of about 25. We have the biggest range of tyres in stock at the lowest tyre prices online. 165R15 tires have a diameter of 25. 8" with a section width of 6. Brand new 165/R15 tyres fully fitted locally, 7 days a week. 8" 6. pr1jw, arqm, ef, asa9o, zt4s, xrmi8, iua, uyqz, pyk6e, do6vg,