255/40 R21

C C 72 dB

D B 70 dB

B B 72 dB

C C 71 dB

B A 72 dB

B A 73 dB

C A 73 dB

B B 69 dB

A A 68 dB

C A 68 dB

C B 72 dB

C A 72 dB

C A 71 dB

A A 70 dB