215/80 R16 doesn't belong to the most popular dimensions for summer tyres - there are 1 tyre models available, which can be compared to 155/60 R15, 170/60 R17, 160/60 R14. 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 R16, which means it fits to a 16 inch/406.4mm diameter wheel. The total circumference of the tyre is 2357.45 mm, which is very similar to 245/65 R17(2357.14 mm), 245/60 R18(2359.96 mm), 245/70 R16(2354.31 mm), 265/70 R15(2362.48 mm), 315/30 R22(2349.28 mm), 245/50 R20(2365.62 mm), 265/50 R19(2348.65 mm). There are multiple speed indexes available for summer tyres in 215/80 R16: S(180km/h). The same goes for weight indexes: 103.