385/65 R22.5 doesn't belong to the most popular dimensions for summer 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 - 65 is height of the tyre, which is calculated as 65% of the tyre width (385mm), which means the sidewall height has 250.25 mm. The wheel diameter is R23, which means it fits to a 23 inch/584.2mm diameter wheel. The total circumference of the tyre is mm, which is very similar to 160/60 R18(2039.52 mm), 245/40 R20(2211.68 mm), 165/70 R14(1842.86 mm), 245/50 R20(2365.62 mm), 175/65 R14(1831.86 mm), 255/30 R20(2076.59 mm), 180/65 R16(2011.88 mm). There are multiple speed indexes available for summer tyres in 385/65 R22.5: J(km/h), K(km/h), L(km/h). The same goes for weight indexes: 158, 160, 164.