215/80 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 - 80 is height of the tyre, which is calculated as 80% of the tyre width (215mm), which means the sidewall height has 172 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 225/70 R16
(2266.34 mm), 325/25 R20
(2106.44 mm), 235/45 R17
(2020.99 mm), 235/55 R18
(2248.44 mm), 235/65 R18
(2396.09 mm), 155/70 R19
(2197.86 mm), 245/35 R21
(2214.51 mm).
