Load and speed index of truck tyres

The load index indicates how much weight the tyre is able to cope with (at the correct tyre pressure). The accompanying code can be found on the side of the tyre. Never exceed the load index mentioned on the tyre! The load index is used together with the speed index, which indicates the maximum speed at which you can drive with a tyre.

Load index of tyres

 

LI	KG	LI	KG	LI	KG	LI	KG
115	1215	131	1950	147	3075	163	4875
116	1250	132	2000	148	3150	164	5000
117	1285	133	2060	149	3250	165	5150
118	1320	134	2120	150	3350	166	5300
119	1360	135	2180	151	3450	167	5450
120	1400	136	2240	152	3550	168	5600
121	1450	137	2300	153	3650	169	5800
122	1500	138	2360	154	3750	170	6000
123	1550	139	2430	155	3875	171	6150
124	1600	140	2500	156	4000	172	6300
125	1650	141	2575	157	4125	173	6500
126	1700	142	2650	158	4250	174	6700
127	1750	143	2725	159	4375	175	6900
128	1800	144	2800	160	4500	176	7100
129	1850	145	2900	161	4625	177	7300
130	1900	146	3000	162	4750

 

The speed index is a code which indicates the maximum speed at which the tyre can be used and is always mentioned together with the load index. This code is also issued for off-road vehicles and vehicles which are rarely used on the road.

 

The speed index was initially introduced to match the tyre's resistance with the (increasing) speed of the vehicle and is based on lab testing carried out by manufacturers. Each speed range has a specific letter (or letter/number combination for the lowest categories). During testing, tyres are pressed against a large, revolving metal drum and the speed of the drum is increased until the speed required for the tyre in question.

Speed index of truck tyres

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