175/80 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 - 80 is height of the tyre, which is calculated as 80% of the tyre width (175mm), which means the sidewall height has 140 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 175/65 R13(1752.07 mm), 255/30 R20(2076.59 mm), 180/65 R16(2011.88 mm), 255/40 R21(2316.61 mm), 185/65 R14(1872.7 mm), 255/55 R19(2397.35 mm), 195/40 R17(1846.63 mm).