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Manuals

NPK	Speed index	Speed, km / h	Speed, mph	Speed index	Speed, km / h	Speed, mph	Speed index	Speed, km / h	Speed, mph
1	A1	5	3	E	70	43	S	180	112
2	A2	10	6	F	80	50	T	190	118
3	A3	15	9	G	90	56	U	200	124
4	A4	20	12	J	100	62	H	210	130
5	A5	25	16	K	110	68	V	240	149
6	A6	30	19	L	120	75	z	virs 240	virs 149
7	A7	35	22	M	130	81	W	270	168
8	A8	40	25	N	140	87	(W)	virs 270	virs 168
9	B	50	31	P	150	94	Y	300	186
10	C	60	37	Q	160	100	(Y)	virs 300	virs 186

^{Standard load table (extract from ETRTO standards manual – 2010 page G7 ref 42 psi (290 kPa))}

NPK	Load index	Weight, kg	Weight, lbs	Load index	Weight, kg	Weight, lbs	Load index	Weight, kg	Weight, lbs	Load index	Weight, kg	Weight, lbs
1	19	77,5		40	140	309	61	257	567	82	475	1047
2	20	80,0	176	41	145	320	62	265	584	83	487	1074
3	21	82,5	182	42	150	331	63	272	600	84	500	1100
4	22	85,0	187	43	155	342	64	280	617	85	510
5	23	87,5	193	44	160	353	65	290	639	86	530
6	24	90,0	198	45	165	364	66	300	661	87	545
7	25	92,5	204	46	170	375	67	307	677	88	560
8	26	95,0	209	47	175	386	68	315	694	89	580
9	27	97,5	215	48	180	397	69	325	716	90	600
10	28	100	220	49	185	408	70	335	736	91	615