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Speed Code km/h
(mph)
Speed Code
(mph)
SPEED RATINGS
R
170
(106)
V
Speeds over 149 mph
S
180
(112)
Z
Speeds over 149 mph
H
210
(130)
W
Speed up to 168 mph
This code, when present, appears after the size marking. The code comprises three characters, two numbers and a letter, e.g. 67 H, known as
a service description. The two-digit number is a code for the maximum load carrying capacity of the tire. The letter is a maximum speed rating
indicating the maximum speed at which the tire may be used with maximum load when the maximum listed inflation pressure is used. Shinko Does
not recommend or endorse exceeding the safe, legal speed limit. The load index/speed symbol indicates the speed at which the tire can carry a load
corresponding to its load index under conditions specified by the tire manufacturer.
LOAD INDEX & SPEED RATING
LOAD INDEX
INDEX KG.
LBS.
INDEX
KG.
LBS.
INDEX KG.
LBS.
30
106 234
53
206 454
77
412 908
31
109 240
54
212 467
78
425 937
32
112 245
55
218 490
79
437 963
33
115 254
56
224 494
80
450 992
34
118 260
57
230 507
81
462 1019
35
121 267
58
236 520
82
475 1047
36
125 276
59
243 536
83
487 1074
37
128 282
60
250 551
84
500 1102
38
128 282
61
257 567
85
515 1135
39
136 300
62
265 584
86
530 1168
40
140 309
63
272 600
87
545 1201
41
145 320
64
280 617
88
560 1235
42
150 331
65
290 640
89
580 1279
43
155 342
66
300 661
90
600 1323
44
160 353
67
307 677
45
165 364
68
315 695
46
170 375
69
325 717
47
175 386
70
335 738
48
180 397
71
345 761
49
185 408
72
355 783
50
190 419
73
365 805
51
195 430
74
375 827
52
200 441
75
387 853
53
206 454
76
400 882
Metric
Alpha
Inch
FRONT STREET TIRES
80/90
MH90
2.50/2.75
90/90
MJ90
2.75/3.00
100/80
MJ90
3.00
100/90
MM90
3.25/3.50
110/70
*
*
110/80
*
3.25/3.50
110/90
MN90
3.75/4.00
120/80
*
*
120/70
*
*
120/80
*
3.75/4.25/4.60
120/90
MR90
4.25/4.50
130/60
*
*
130/70
*
*
130/90
MT90
5.00/5.10
Metric
Alpha
Inch
REAR STREET TIRES
110/90
MN90
3.75/4.25
120/80
MP85
4.50/4.75
120/90
MP85
4.50/4.75
130/70
*
*
130/80
*
5.00/5.10
130/90
MT90
5.00/5.10
140/60
*
*
140/70
*
*
140/80
*
5.50/6.00
140/90
MU90
5.50/6.00
150/70
*
*
150/80
MU85
6.00/6.25
150/90
MU85
6.00/6.25
160/60
*
*
160/70
*
*
160/80
*
*
170/60
*
*
170/80
*
*
180/50
*
*
180/55
*
*
* Should not change from OEM low
profile sizing.
SIZE CONVERSION TABLES
: Use these tables to convert your older style
inch size to the new style metric sizing.
TIRE CONVERSION CHARTS