175/70 R14 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 (175mm), which means the sidewall height has 122.5 mm. The wheel diameter is R14, which means it fits to a 14 inch/355.6mm diameter wheel. The total circumference of the tyre is mm, which is very similar to 175/55 R15(1801.7 mm), 245/70 R17(2434.11 mm), 175/80 R14(1996.8 mm), 255/40 R18(2077.22 mm), 185/60 R14(1814.58 mm), 255/50 R19(2317.24 mm), 185/80 R14(2047.06 mm).