Load Index and Speed Rating

› Load Index and Speed Rating

By

Alex

Load indices and speed rating symbols are shown on both tire sidewalls. The speed rating is the maximum service speed of a tire at full load (indicated by the load index) and the load index is the maximum service load at the maximum speed (indicated by the speed symbol) ex. a tire rated 91T can operate loaded with 615 kg at 190 km/h.

Here is a list of rating indicators and their speed equivalents.

Rating	A1	A2	A3	A4	A5	A6	A7	A8	B	C	D	E	F	G	J
Max. km/h	5	10	15	20	25	30	35	40	50	60	65	70	80	90	100
Max. mph	3	6	9	12	15	19	22	25	31	37	40	43	50	56	62

Rating	K	L	M	N	P	Q	R	S	T	H	V	W	Y	ZR
Max. km/h	110	120	130	140	150	160	170	180	190	210	240	270	300	240+
Max. mph	68	75	81	87	93	100	106	113	118	130	150	168	186	149+

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The load index is an industry standard which determines the maximum service load on a tire of a vehicle.

LI	KG	LI	KG	LI	KG
0	45	40	140	80	450
1	46.2	41	145	81	462
2	47.5	42	150	82	475
3	48.7	43	155	83	487
4	50	44	160	84	500
5	51.5	45	165	85	515
6	53	46	170	86	530
7	54.5	47	175	87	545
8	56	48	180	88	560
9	58	49	185	89	580
10	60	50	190	90	600
11	61.5	51	195	91	615
12	63	52	200	92	630
13	65	53	206	93	650
14	67	54	212	94	670
15	69	55	218	95	690
16	71	56	224	96	710
17	73	57	230	97	730
18	75	58	236	98	750
19	77.5	59	243	99	775
20	80	60	250	100	800
21	82.5	61	257	101	825
22	85	62	265	102	850
23	87.5	63	272	103	875
24	90	64	280	104	900
25	92.5	65	290	105	925
26	95	66	300	106	950
27	97.5	67	307	107	975
28	100	68	315	108	1000
29	103	69	325	109	1030
30	106	70	335	110	1060
31	109	71	345	111	1090
32	112	72	355	112	1120
33	115	73	365	113	1150
34	118	74	375	114	1180
35	121	75	387	115	1215
36	125	76	400	116	1250
37	128	77	412	117	1285
38	132	78	425	118	1320
39	136	79	437	119	1360

LI	KG	LI	KG	LI	KG
120	1400	160	4500	200	14000
121	1450	161	4625	201	14500
122	1500	162	4750	202	15000
123	1550	163	4875	203	16000
124	1600	164	5000	204	16000
125	1650	165	5150	205	16500
126	1700	166	5300	206	17000
127	1750	167	5450	207	17500
128	1800	168	5600	208	18000
129	1850	169	5800	209	18500
130	1900	170	6000	210	19000
131	1950	171	6150	211	19500
132	2000	172	6300	212	20000
133	2060	173	6500	213	20600
134	2120	174	6700	214	21200
135	2180	175	6900	215	21800
136	2240	176	7100	216	22400
137	2300	177	7300	217	23000
138	2360	178	7500	218	23600
139	2430	179	7750	219	24300
140	2500	180	8000	220	25000
141	2575	181	8250	221	25750
142	2650	182	8500	222	26500
143	2725	183	8750	223	27250
144	2800	184	9000	224	28000
145	2900	185	9250	225	29000
146	3000	186	9500	226	30000
147	3075	187	9750	227	30750
148	3150	188	10000	228	31500
149	3250	189	10300	229	32500
150	3350	190	10600	230	33500
151	3450	191	10900	231	34500
152	3550	192	11200	232	35500
153	3650	193	11500	233	36500
154	3750	194	11800	234	37500
155	3875	195	12150	235	38750
165	4000	196	12500	236	40000
157	4125	197	12850	237	41250
158	4250	198	13200	238	42500
159	4375	199	13600	239	43750

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