Pneumatici auto hankook estive 255/40 R21 Y
255/40 R21 102Y XL 
B 
A 
71 dB
B
A
71 dB
255/40 R21 102Y XL
C
A
73 dB
C
A
73 dB
255/40 R21 102Y XL
D
A
72 dB
D
A
72 dB
255/40 R21 102Y XL
A
A 
68 dB
A
A
68 dB