175/65 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 - 65 is height of the tyre, which is calculated as 65% of the tyre width (175mm), which means the sidewall height has 113.75 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 195/70 R15(2054.6 mm), 265/45 R20(2345.2 mm), 205/45 R16(1856.37 mm), 265/70 R15(2362.48 mm), 205/55 R19(2224.56 mm), 275/35 R19(2120.89 mm), 215/35 R18(1909.15 mm). You can find 175/65 R15 on 16 car models - mainly Suzuki, Toyota, Fiat, Honda, Mini.