Tire Structure

“ Radial ” describes a pneumatic tire structure in which the ply cords extend to the beads and are laid substantially at 90° to the center line of the tread, the carcass being stabilised by an essentially inextensible circumferential belt.

On Radial tires, the letter “ R ” placed in front of the rim-diameter marking. Ex. 120/70 R 17 58W

“ Diagonal ” or “ Bias ply ” describes a pneumatic tire structure in which the ply cords extend to the beads and are laid at alternate angles substantially less than 90° to the center line of the tread.

“ Bias belted ” describes a pneumatic tire structure of diagonal (bias ply) type in which the carcass is restricted by a belt comprising two or more layers of substantially inextensible cord material laid at alternate angles close to those of the carcass.

 

Speed Symbol

The SPEED SYMBOL indicates the maximum speed at which the tire can carry a load index under service conditions specified by SHINKO tires.

These speeds are shown in Table 1 and apply to tires when in good condition, inflated to the correct pressure, operating within their specific load capacity and fitted to the correct size rim. Speeds quoted are the maximum speed of which the tire is capable, not the speed at which it is normally ridden. All maximum speeds referred to in this data are subject to applicable legal speeds.

 

Table 1 : Speed Symbol

Speed  Symbol	B	F	G	J	K	L	M	N	P	Q	R	S	T	U	H	V	W
Max. km/h	50	80	90	100	110	120	130	140	150	160	170	180	190	200	210	240	270

 

Load Index

The LOAD INDEX is a numerical code associated with the maximum load a tire can carry ( except for loads at speeds above 210 km/h ) at the speed indicated by its Speed Symbol under service conditions specified by SHINKO tires.

You should only fit replacement tires bearing the precise speed and load specified by SHINKO tires.

You should only fit replacement tires bearing the precise speed and load index referred to in the motorcycle manufacturer’s manual.

Before you make any variation please consult SHINKO tires to ensure that the replacement tire is a correct fitment for your motorcycle.

 

Table 2 : Load Index - kg

LI	kg	LI	kg	LI	kg	LI	kg	LI	kg	LI	kg	LI	kg	LI	kg	LI	kg
41	145	48	180	55	218	62	265	69	325	76	400	83	487	90	600	97	730
42	150	49	185	56	224	63	272	70	335	77	412	84	500	91	615	98	750
43	155	50	190	57	230	64	280	71	345	78	425	85	515	92	630	99	775
44	160	51	195	58	236	65	290	72	355	79	437	86	530	93	650	100	800
45	165	52	200	59	243	66	300	73	365	80	450	87	545	94	670	101	825
46	170	53	206	60	250	67	307	74	375	81	462	88	560	95	690	102	850
47	175	54	212	61	257	68	315	75	387	82	475	89	580	96	710	103	875

 

WARNING !

Please put the pressure specified by the manufacturer of tire or vehicle. Check the pressure regularly. In case of non-compliance with proper pressure, it may be the cause of abnormal wear and accidents. Please drive according to the running direction of the specified tires. It is recommended to check the tire condition regularly as once a month. When the tire TWI (Tread Wear Indicator) mark appeared, immediately it should be replaced with a new tire. Only skilled and trained expert must be working when mounting or detaching tires and rims.