225/50 R16 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 - 50 is height of the tyre, which is calculated as 50% of the tyre width (225mm), which means the sidewall height has 112.5 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 mm, which is very similar to 200/55 R17(2047.69 mm), 265/60 R18(2435.36 mm), 205/50 R17(2000.57 mm), 275/30 R20(2114.29 mm), 205/65 R16(2113.98 mm), 275/40 R20(2287.08 mm), 215/45 R16(1884.64 mm). You can find 225/50 R16 on 10 car models - mainly BMW, Ford, Volvo, Audi, Jaguar.