Dunlop Motorcycle

Tyres technical

• Load Index Chart
• Speed Index Chart
• Tyre Pressure Conversion Chart
• Tra Size Markings With Approximate Size Conversions

Load Index Chart

The Load Index is included in the size description on a tyre's sidewall. The load rating, indicated by the code number, of a tyre must not be exceeded.

Load Index	Load kg	Load Index	Load kg	Load Index	Load kg
21	82.5	42	150	63	272
22	85	43	155	64	280
23	87.5	44	160	65	290
24	90	45	165	66	300
25	92.5	46	170	67	307
26	95	47	175	68	315
27	97.5	48	180	69	325
28	100	49	185	70	335
29	103	50	190	71	345
30	106	51	195	72	355
31	109	52	200	73	365
32	112	53	206	74	375
33	115	54	212	75	387
34	118	56	224	77	412
36	125	57	230	78	425
37	128	58	236	79	437
38	132	59	243	80	450
39	136	60	250	81	462
40	140	61	257	82	475
41	145	62	265	83	487

return to top

Speed Index Chart

The Speed Index is included in the size description on a tyre's sidewall. The tyre's maximum speed, indicated by the code letter, must not be exceeded.

Speed Index	MPH	KM/H
B	31	50
F	50	80
J	62	100
L	74	120
M	81	130
P	93	150
Q	100	160
R	106	170
S	112	180
T	118	190
H	130	210
V	up to 149	up to 240
(V)	over 149	over 240
W	up to 168	up to 270
(W)	over 168	over 270

return to top

Tyre Pressure Conversion Chart

Bar	PSI	Bar	PSI
1.20	17	2.05	29
1.25	18	2.10	30
1.30	19	2.20	31
1.40	20	2.25	32
1.45	21	2.30	33
1.50	22	2.40	34
1.55	22	2.45	35
1.60	23	2.50	36
1.70	24	2.60	37
1.75	25	2.70	38
1.80	26	2.75	39
1.85	27	2.80	40
1.90	28	2.90	41
1.95	28	2.95	42
2.00	29

return to top

Tra Size Markings With Approximate Size Conversions

Alpha Numeric	mm	Inch
MH90	80/90	2.50 / 2.75
MJ90	90/90	2.75 / 3.00
MM90	100/90	3.25 / 3.50
MN90	110/90	3.75 / 4.00
MP85	110/90	4.00 / 4.25
MR90	120/90	4.25 / 4.50 / 4.75
MT90	130/90	5.00 / 5.10
MU85	140/90	5.50 / 6.00
MU90	140/90	5.50 / 6.00
MV85	150/80 / 150/90	6.00 / 6.25

return to top