265/30 R20 doesn't belong to the most popular dimensions for allround tyres - there are 0 tyre models available, which can be compared to
155/60 R15,
170/60 R17,
160/60 R14. Let's break down the sizing - 30 is height of the tyre, which is calculated as 30% of the tyre width (265mm), which means the sidewall height has 79.5 mm. The wheel diameter is R20, which means it fits to a 20 inch/508mm diameter wheel. The total circumference of the tyre is 2095.44 mm, which is very similar to 235/50 R17
(2094.81 mm), 205/70 R15
(2098.58 mm), 265/35 R19
(2098.9 mm), 215/55 R17
(2099.53 mm), 305/30 R19
(2091.04 mm), 225/35 R20
(2090.73 mm), 235/45 R18
(2100.78 mm).
