BFGoodrich Mud Terrain T/A KM3 is a summer tyre made in total of 31 sizes, ranging from R14 to R14 - this particular dimension is R16, which means it fits to a 16 inch/406.4mm diameter wheel. 205/80 R16 is 178mm wider than the narrowest dimension (27) and 100mm narrower than the widest one (305). This tyre profile of 80 means the sidewall height of the tyre is 80% of the tyre width (205mm), which results in 164mm sidewall height. In 205/80 R16, there is only one possible speed index for BFGoodrich Mud Terrain T/A KM3 - "Q", which is good for speeds up to 160 km/h.