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 225/70 R15(2186.55 mm), 315/40 R21(2467.41 mm), 235/40 R19(2106.75 mm), 235/55 R17(2168.64 mm), 235/65 R17(2316.3 mm), 155/70 R13(1719.08 mm), 245/35 R20(2134.71 mm).