225/70 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 (225mm), which means the sidewall height has 157.5 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 275/70 R16(2486.26 mm), 215/65 R17(2234.61 mm), 285/35 R21(2302.47 mm), 225/35 R19(2010.93 mm), 285/50 R20(2491.28 mm), 225/50 R17(2063.4 mm), 295/35 R19(2164.87 mm). You can find 225/70 R15 on 4 car models - mainly Jeep, Mercedes-Benz, Renault, VW Commercial.