Pneumatici auto goodyear estive 255/50 R20 Y
255/50 R20 109Y XL 
C 
A 
70 dB
C
A
70 dB
255/50 R20 109Y XL
B
A 
71 dB
B
A
71 dB
255/50 R20 109Y XL
B
A
71 dB
B
A
71 dB
255/50 R20 109Y
B
A
B
A
255/50 R20 109Y XL
C
A
70 dB
C
A
70 dB