Tyre information please read!!

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masterofinsanity
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Tyre information please read!!

Post by masterofinsanity »

Please Note This information has been taken from the http://www.wemoto.com website
This information is only a guide and if in doubt about any specific fitting please consult and follow manufacturers recommendations, we at zxrworld will not be held responsible for any damage/injury caused resulting from this info.

Running in
A New tyre will need at least 50 miles running in before it gives it best and for the first mile or so can be lethal if thrown hard into a bend for example. The best tyre in the world will not give it performance until it is up to temperature.
Specification on Side Wall
Moulded / written into the side wall of a tyre is all its specification. In short it tells you anything that you may need to know about your tyre.

Example BT45F 110/80-17 57H

Manufacturers Code BT45
F Front
110 Width in millimetres
80 Height of the sidewall as a percentage of the width. Aspect ratio.
17 The diameter of the inner rim in inches
57 Load Capacity of Tyre
H Speed Rating

Load Capacity
Index Capacity in Kilos
62 265
72 355
82 475

Speed Ratings
These initially increase in 10 KPH increments. Rating KPH/MPH
F 80/50
G 90/56
H 100/62
J 110/69
L 120/75
M 130/81
N 140/87
P 150/93
Q 160/100
R 170/106
S 180/112
T 190/119
U 200/125
H 210/131
V 240/150
Z 240 Plus/150 Plus

E4 Mark
Any tyre sold in the EEC should have a type approval mark and number starting with E4. This shows that it has passed the high standards of the European regulatory authorities.


Mixing Radial and Ply / Belt Tyres
Boths tyres Radial or Radial as back tyre only.


Sufficient Clearance
A good clearance between the tyre and all motorcycle parts such as Guards is important as Heat and Centrifugal force will increase diameters during use.


Directional Arrows
Some tyres are made to run in only one direction and this is shown by a directional arrow moulded into the tyre wall.


Size Conversion Table
CONVERSION CHART – MOTORCYCLE TYRE SIZES (APPROXIMATION)
Metric Inch
80/90 2.75, (3.00)
90/90 3.00, (3.25), (3.60)
100/90 3.25, (3.50), 3.60
110/90 3.50, (3.75), 4.10
120/90 4.00, 4.25, 4.25/85, 4.60
130/90 4.50, 5.00, 5.10
140/90 5.50

Please note: Values given in brackets are theoretically possible, but not recommended.


Warning
New tyre have little grip for the first few miles. Go gentle for a few miles !
Don't forget people there is more to the zxr400 than this forum... check out www.zxrworld.co.uk also.
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