Pneumatici auto bridgestone estive 255/45 R20 Y
255/45 R20 105Y XL 
C 
A 
7 dB
C
A
7 dB
255/45 R20 105Y XL
C
A
72 dB
C
A
72 dB
255/45 R20 105Y XL
A
B 
69 dB
A
B
69 dB
255/45 R20 105Y XL
A
B
6 dB
A
B
6 dB