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  KG LI KG LI KG LI KG LI KG
19 77,5 36 125,0 53 206 70 335,0 87 545,0
20 80,0 37 128,0 54 212,0 71 345,0 88 560,0
21 82,5 38 132,0 55 218,0 72 355,0 89 580,0
22 85,0 39 136,0 56 224,0 73 365,0 90 600,0
23 87,5 40 140,0 57 230,0 74 375,0 91 615,0
24 90,0 41 145,0 58 236,0 75 387,0 92 630,0
25 92,0 42 150,0 59 243,0 76 400,0 93 650,0
26 95,0 43 155,0 60 250,0 77 412,0 94 670,0
27 97,5 44 160,0 61 257,0 78 425,0 95 690,0
28 100,0 45 165,0 62 265,0 79 437,0 96 710,0
29 103,0 46 170,0 63 272,0 80 450,0 97 730,0
30 106,0 47 175,0 64 280,0 81 462,0 98 750,0
31 109,0 48 180,0 65 290,0 82 475,0 99 775,0
32 112,0 49 185,0 66 300,0 83 487,0 100 800,0
33 115,0 50 190,0 67 307,0 84 500,0 - -
34 118,0 51 195,0 68 315,0 85 51 - -
35 121,0 52 200,0 69 325 86 530,0 - -

 

CONVERSION CHART – MOTORCYCLE TYRE SIZES (APPROXIMATION)
       Metric Inch         Alpha
80/90 2.75 MH 90
90/90 3.00, 360 MJ 90
100/90 3.25 MM 90
110/90 3.50, 4.10 MN 90
120/90 4.00, 4.25, 4.25/85, 4.60 MR 90
130/90 4.50, 5.00, 5.10 MT 90
140/80 5.50 MU 85
140/90 MU 90
150/80 MV85
190/90 MV 90

Please note that any difference from the original tyre size will affect the rolling circumference and the tyre clearance will need to be checked. Pay attention to the load index and adjust inflation pressure of the tyre accordingly. Follow the instructions of the vehicle manufacturer.

Mileage

A tyre which can achieve high mileage is an asset because a longer lifespan leads to lower costs.

The mileage attained by motorcycle tyres and in particular that by the rear wheels of performance bikes cannot be measured in the same way as that of car or truck tyres. Because the motorcyles themselves weigh comparatively less they are able to accelerate faster and during this acceleration the rear tyre slips. This slipping leads to wear on the tyres.

A pillion passenger whose weight is solely placed on the rear tyre helps to prolong the life of the tyre. The rear wheel is pressed onto the road with more force, there-by reducing the amount of slipping. The tyre therefore lasts longer.

Motorcycle tyres on a rolling road

While testing motorcycles on a rolling road, very high tyre temperatures may occur. Because of the smooth surface of the rollers the tyres slip and become hot during testing. Afterwards the tread is often visibly destroyed. It is advisable to use worn tyres for the rolling road session. For safety reasons we recommend that after the test the tyres are removed and discarded.

Tread depth

Worn tyres influence the handling of a motorcycle and thereby reduce the performance required for safe riding. The recommended minimum tread depth is 2mm.

Valve nut (tube type)

Only a fitting aid. Should be twisted against the valve cap after fitting the tyre.

Directional Arrows

Where a tyre has a direction of rotation arrow moulded upon the sidewall, the tyre must be fitted so that the relevant front or rear tyre follows the direction of rotation when the motorcycle is being ridden forward. Road handling and tyre wear may worsen, or damage to the tyre can occur in extreme circumstances if these instructions are not followed.

Tubeless and tubetype tyres

It is generally true that the fitting of tyres to a motorcycle should be in accordance with the stated manufacturers specification for the specific model, otherwise the warranty may be rendered invalid. For example, if tubeless tyres are prescribed then tubeless tyres must be fitted. The same is true for tubetype tyres.

If no appropriate indication has been given in the vehicle specification, then in the following circumstances either tubeless or tubetype tyres can be fitted.

For Continental motorcycle tyres

  • All TL/TT-sidewalled tyres can be used with a tube without decreasing the speed range (except Z rated radials).
  • ALL Continental tyres labelled TL can be fitted to rims/wheels marked Tubeless. They can also be fitted on Tubed Type rims/wheels with a correctly sized Continental inner tube.
  • If Sport Attack, Road Attack and ContiForce tyres (Z rated radials) are fitted on Tubed Type rims/wheels with Continental inner tubes, the maximum speed is then restricted to 130 mph (210 km/h, from Z to H speed rating).
  • Continental tyres labelled TT can only be fitted on Tubed Type rims/wheels and must be fitted with a correctly sized Continental inner tube.
  • Please note that the maximum speed for tubeless tyres fitted with an inner-tube is 210 km/h (approx. 130 mph).

Example:

100/90 – 18 56H
In this case a 100/90 – 18 56V TL with an inner-tube could be fitted.
If new Continental tyres are fitted, new Continental inner-tubes must also be fitted.
If new Continental tubeless tyres are fitted, new valve must also be fitted.

Miscellaneous

m/c tyres from Continental meet the highest quality standard according to ISO 9000, ISO 9001 and ECE.

Tyre identification

The tyre identification number which has been used thus far gives information on:

  • the tyre width (in inches or mm)
  • the ratio: height / width
  • the registered maximum speed
  • the rim diameter
  • the tyre load

Examples:

3.50-18 62P TT reinforced
3.50 = tyre width 3.5 inches
- = diagonal casing construction
18 = rim diameter in inches
62 = load index – see page 80 for further information
P = speed index, symbol for registered maximum speed (P = 150 km/h, approx. 93 mph)
TT = tubetype reinforced = increased tyre load capacity
150/70 B17 69H TL
150 = tyre width in mm
/70 = ratio of height to width = 70 : 100
B = bias belted (construction type)
17 = rim diameter in inches
69 = load index – see page 80 for further information
H = speed index, symbol for registered maximum speed (H = 210 km/h approx 130 mph)
TL =tubeless
An older type of identification from ECE/ETRTO/JATMA is for example:
130/90 H16, which is identical to 130/90 – 16 67H

Further examples:

180/55 ZR 17 (73W) TL
180 = tyre width in mm
/55 = ratio of height to width = 55 : 100
ZR = radial construction
17 = rim diameter in inches
TL =tubeless
(73) = load index (see page 80)
(W) = > 270 km/h
Load and speed index in brackets allows higher speed than 270 km/h. The load need to be reduced according ECE and ETRTO.
MT 90-16 T 71H TL
M = motorcycle
T = symbol for tyre width, T = 5.10 inch
90 = ratio of height to width = 90 : 100
16 = rim diameter in inches
T = rim contour
71 = load index – see page 80 for further information
H = speed index, symbol for registered maximum speed H = 210km/h (approx 130 mph)
TL =tubeless
E4 R75-000 6224
E4 = country of approval
R75 = ECE Guideline
000 6224 = approval no.

Please note that it is not legal to use m/c tyres without ECE approval in the U.K. and Germany. Other European countries will follow.

We wish you safe and enjoyable riding.
Your Continental motorcycle team.