Tyre and Rim Information

1 - Radial Tyre

Tyre Identification: 12/80 R22.5 16 PR Tubeless
12(315): Tyre width in inches (or mm)
80: Ratio of height to width 80%
R: Construction type: radial construction
22.5: Rim diameter in inches
16 PR: Load index (Ply Rating)
Tubeless: Tube type (TT) or Tubeless (TL)

2 - Bias Tyre

Tyre Identification: 10.00-20 16PR Tube Type (Diagonal Tyre)
10: Tyre width in inches (1 inches = 25,4 mm)
-: Tyre construction: Diagonal casing construction (D)
20: Rim diameter in inches
16PR: Load index (Ply Rating)
TT/TL: Tube type or Tubeless

3 - Load Index (LI)

The Load Index (LI) is a numerical code associated with the maximum load a tyre can carry at the speed indicated by its Speed Symbol under service conditions specified by the tyre manufacturer.

LI	kg	LI	kg	LI	kg
20	80	104	900	188	10000
21	82,5	105	925	189	10300
22	85	106	950	190	10600
23	87,5	107	975	191	10900
24	90	108	1000	192	11200
25	92,5	109	1030	193	11500
26	95	110	1060	194	11800
27	97,5	111	1090	195	12150
28	100	112	1120	196	12500
29	103	113	1150	197	12850
30	106	114	1180	198	13200
31	109	115	1215	199	13600
32	112	116	1250	200	14000
33	115	117	1285	201	14500
34	118	118	1320	202	15000
35	121	119	1360	203	15550
36	125	120	1400	204	16000
37	128	121	1450	205	16500
38	132	122	1500	206	17000
39	136	123	1550	207	17500
40	140	124	1600	208	18000
41	145	125	1650	209	18500
42	150	126	1700	210	19000
43	155	127	1750	211	19500
44	160	128	1800	212	20000
45	165	129	1850	213	20600
46	170	130	1900	214	21200
47	175	131	1950	215	21800
48	180	132	2000	216	22400
49	185	133	2060	217	23000
50	190	134	2120	218	23600
51	195	135	2180	219	24300
52	200	136	2240	220	25000
53	206	137	2300	221	25750
54	212	138	2360	222	26500
55	218	139	2430	223	27250
56	224	140	2500	224	28000
57	230	141	2575	225	29000
58	236	142	2650	226	30000
59	243	143	2725	227	30750
60	250	144	2800	228	31500
61	257	145	2900	229	32500
62	265	146	3000	230	33500
63	272	147	3075	231	34500
64	280	148	3150	232	35500
65	290	149	3250	233	36500
66	300	150	3350	234	37500
67	307	151	3450	235	38750
68	315	152	3550	236	40000
69	325	153	3650	237	41250
70	335	154	3750	238	42500
71	345	155	3875	239	43750
72	355	156	4000	240	45000
73	365	157	4125	241	46250
74	375	158	4250	242	47500
75	387	159	4375	243	48750
76	400	160	4500	244	50000
77	412	161	4625	245	51500
78	425	162	4750	246	53000
79	437	163	4875	247	54500
80	450	164	5000	248	56000
81	462	165	5150	249	58000
82	475	166	5300	250	60000
83	487	167	5450	251	61500
84	500	168	5600	252	63000
85	515	169	5850	253	65000
86	530	170	6000	254	67000
87	545	171	6150	255	69000
88	560	172	6300	256	71000
89	580	173	6500	257	73000
90	600	174	6700	258	75000
91	615	175	6900	259	77500
92	630	176	7100	260	80000
93	650	177	7300	261	82500
94	670	178	7500	262	85000
95	690	179	7750	263	87500
96	710	180	8000	264	90000
97	730	181	8250	265	92500
98	750	182	8500	266	95000
99	775	183	8750	267	97500
100	800	184	9000	268	100000
101	825	185	9250	269	103000
102	850	186	9500

4 - Speed Index (SI)

The Speed Symbol (SS) or Speed Index (SI) indicates the maximum speed at which the tyre can carry a load corresponding to its Load Index under service conditions specified by the tyre manufacturer.

SI	km/h	SI	km/h
A1	5	L	120
A2	10	M	130
A3	15	N	140
A4	20	P	150
A5	25	Q	160
A6	30	R	170
A7	35	S	180
A8	40	T	190
B	50	U	200
C	60	H	210
D	65	V	240
E	70	VR	>210
F	80	W	270
G	90	ZR	>240
J	100	Y	300
K	110	(Y)	>300

Information