Kumho - Solus KL21
Kumho's SOLUS KL21 tires have low rolling resistance, produce less noise, weigh less and have a bamboo-inspired tread pattern.
225mm * 60% = 135mm Or... 135mm / 25.4 = 5.3"
Passenger tires are given a "Service Description" to describe the tire's capabilities.
A service description has two components:
Common sidewall abbreviations and they're definitions: