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Motorcycle Tyre Help
Top Speeds
| Speed symbol |
J |
K |
L |
M |
N |
P |
Q |
R |
S |
T |
U |
H |
V |
Z |
W |
Y |
| Speed (km/h) |
100 |
110 |
120 |
130 |
140 |
150 |
160 |
170 |
180 |
190 |
200 |
210 |
240 |
>240 |
270 |
300 |
| Speed (mph) |
62 |
68 |
75 |
81 |
87 |
93 |
99 |
106 |
112 |
118 |
124 |
130 |
149 |
>150 |
168 |
186 |
Load Index (LI)
| LI |
lbs |
KG |
LI |
lbs |
KG |
LI |
lbs |
KG |
LI |
lbs |
KG |
LI |
lbs |
KG |
| 19 |
112.7 |
77.5 |
36 |
181.7 |
125.0 |
53 |
299.4 |
206.0 |
70 |
487.0 |
335.0 |
87 |
792.2 |
545.0 |
| 20 |
116.3 |
80.0 |
37 |
186.1 |
128.0 |
54 |
308.2 |
212.0 |
71 |
501.5 |
345.0 |
88 |
814.0 |
560.0 |
| 21 |
119.9 |
82.5 |
38 |
191.9 |
132.0 |
55 |
316.9 |
218.0 |
72 |
516.0 |
355.0 |
89 |
843.1 |
580.0 |
| 22 |
123.6 |
85.0 |
39 |
197.7 |
136.0 |
56 |
325.6 |
224.0 |
73 |
530.6 |
365.0 |
90 |
872.2 |
600.0 |
| 23 |
127.2 |
87.5 |
40 |
203.5 |
140.0 |
57 |
334.3 |
230.0 |
74 |
545.1 |
375.0 |
91 |
894.0 |
615.0 |
| 24 |
130.8 |
90.0 |
41 |
210.8 |
145.0 |
58 |
343.0 |
236.0 |
75 |
562.5 |
387.0 |
92 |
915.8 |
630.0 |
| 25 |
134.5 |
92.0 |
42 |
218.0 |
150.0 |
59 |
353.2 |
243.0 |
76 |
581.4 |
400.0 |
93 |
944.8 |
650.0 |
| 26 |
138.1 |
95.0 |
43 |
225.3 |
155.0 |
60 |
363.4 |
250.0 |
77 |
598.9 |
412.0 |
94 |
973.9 |
670.0 |
| 27 |
141.7 |
97.5 |
44 |
232.6 |
160.0 |
61 |
373.6 |
257.0 |
78 |
617.8 |
425.0 |
95 |
1003.0 |
690.0 |
| 28 |
145.4 |
100.0 |
45 |
239.8 |
165.0 |
62 |
385.2 |
265.0 |
79 |
635.2 |
437.0 |
96 |
1032.1 |
710.0 |
| 29 |
149.7 |
103.0 |
46 |
247.1 |
170.0 |
63 |
395.4 |
272.0 |
80 |
654.1 |
450.0 |
97 |
1061.1 |
730.0 |
| 30 |
154.1 |
106.0 |
47 |
254.4 |
175.0 |
64 |
407.0 |
280.0 |
81 |
671.6 |
462.0 |
98 |
1090.2 |
750.0 |
| 31 |
158.4 |
109.0 |
48 |
261.6 |
180.0 |
65 |
421.5 |
290.0 |
82 |
690.5 |
475.0 |
99 |
1126.5 |
775.0 |
| 32 |
162.8 |
112.0 |
49 |
268.9 |
185.0 |
66 |
436.1 |
300.0 |
83 |
707.9 |
487.0 |
100 |
1162.9 |
800.0 |
| 33 |
167.2 |
115.0 |
50 |
276.2 |
190.0 |
67 |
446.3 |
307.0 |
84 |
726.8 |
500.0 |
- |
- |
- |
| 34 |
171.5 |
118.0 |
51 |
283.5 |
195.0 |
68 |
457.9 |
315.0 |
85 |
748.6 |
510.0 |
- |
- |
- |
| 35 |
175.9 |
121.0 |
52 |
290.7 |
200.0 |
69 |
472.4 |
325.0 |
86 |
770.4 |
530.0 |
- |
- |
- |
Conversion chart – motorcycle tyre sizes (approximation)
| Metric |
Inch |
Alpha |
| 80/90 | 2.75, (3.00) | (MH 90) |
| 90/90 | 3.00, (3.25), (3.60) | MH 90 |
| 100/90 | 3.25, (3.50), 3.60 | MJ 90 |
| 110/90 | 3.50, (3.75), 4.10 | ML 90 |
| 120/90 | 4.00, 4.25, 4.25/85, 4.60 | MN 90, MP 90 |
| 130/90 | 4.50, 5.00, 5.10 | MT 90 |
| 140/90 | 5.50 | MU 90 |
Please note: Values given in brackets are theoretically possible, but not recommended.
American Alpha-Indication
| Alpha | Size |
Alpha | Size |
| H | 3.15 inch |
R | 4.50 inch |
| J | 3.50 inch |
S | 4.75 inch |
| L | 3.65 inch |
T | 5.10 inch |
| M | 3.75 inch |
U | 5.60 inch |
| N | 4.10 inch |
V | 5.90 inch |
| P | 4.25 inch |
| |
|
Options
 1 GBP ≈ 1.1000 EUR  |
Currency: |
Euros (EUR) |
Deliver to: |
United Kingdom |
Your bike: |
Yamaha YZF1000 R Thunderace (1997)
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Latest news
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| 26 Feb 10 | Brembo brake pads for 2010 machines have been added to our site. The range includes Organic compounds right through to Ceramic racing brake pads!. |
| 26 Feb 10 | The 2010 line up of R&G Racing Products have been updated onto our site. |
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