205/70 R15 doesn't belong to the most popular dimensions for tyres - there are tyre models available, which can be compared to 325/30 R21, 155/60 R15, 155/65 R13. Let's break down the sizing - 70 is height of the tyre, which is calculated as 70% of the tyre width (205mm), which means the sidewall height has 143.5 mm. The wheel diameter is R15, which means it fits to a 15 inch/381mm diameter wheel. The total circumference of the tyre is mm, which is very similar to 295/45 R20(2430.02 mm), 225/75 R16(2337.03 mm), 325/30 R21(2288.34 mm), 235/45 R18(2100.78 mm), 235/55 R19(2328.23 mm), 235/70 R16(2310.33 mm), 155/80 R13(1816.47 mm). You can find 205/70 R15 on 15 car models - mainly Chevrolet, Chrysler, Subaru, CITROËN, Daihatsu.