Pneumatici auto road x estive 255/40 R20 W
255/40 R20 101Y XL 
C 
A 
71 dB
C
A
71 dB
255/40 R20 101W XL
B
A
70 dB
B
A
70 dB
255/40 R20 101Y XL
D
B
72 dB
D
B
72 dB
255/40 R20 101Y XL
C
A
71 dB
C
A
71 dB