General Tire Grabber AT3 Plus 305/50 R20

General Tire Grabber AT3 Plus is a allround tyre made in total of 22 sizes, ranging from R15 to R15 - this particular dimension is R20, which means it fits to a 20 inch/508mm diameter wheel. 305/50 R20 is 110mm wider than the narrowest dimension (195) and -20mm narrower than the widest one (285). This tyre profile of 50 means the sidewall height of the tyre is 50% of the tyre width (305mm), which results in 152.5mm sidewall height.