Size speed & load index  
145/70R12   69T
155/65R13  73T
165/70R13  79T
175/70R13  82T
185/70R13  86H
195/65R15  95V
205/65R15  94V
215/65R15  96H
205/55R16  94V
205/55ZR16 94W
215/55R16  93W
225/45R17  94W
225/40R18  92w

Size speed & load index  
145R12C  80/78N
155R12C  88/86N
155R13C  85/83N
LT5.50R12  92/90P
165/70R13C  88/86S
LT5.50R13  94/92P
7.50R16TT  122/118L
7.50R16TL  122/118L
165/70R14C  89/87T
205/70R15C  106/104R
205/75R16C  110/108R
215/75R16C  113/111R
225/75R16C  121/120R

All these sizes of car tires have passed ECE and DOT certificate with high performance.