TST    

Tony Salt Racing & Performance Tyres, Warrington, Cheshire

The UK's Leading independent supplier of racing & performance motorcycle tyres for over 25 years.

Telephone 01925 766987 or 766380

FAX 01925 766775

 

 

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Some information regarding tyres and the markings on them.

Tyre Speed Ratings: -

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

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

Some examples:

180/55 ZR 17 (73W) TL
180 = tyre width in mm
/55 = ratio of height to width = 55 : 100
Z = Speed rating [see table above]

R = radial construction
17 = rim diameter in inches
TL =tubeless
(73) = load index
(W) = > 270 km/h

 

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
H = speed index, symbol for registered maximum speed (H = 210 km/h approx 130 mph)
TL =tubeless

 

3.50-18 62P TT reinforced
3.50 = tyre width 3.5 inches
- = diagonal casing construction
18 = rim diameter in inches
62 = load index
P = speed index, symbol for registered maximum speed (P = 150 km/h, approx. 93 mph)
TT = tubetype reinforced = increased tyre load capacity

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.

Directional Arrows
Where a tyre has directional arrows moulded upon it, the tyre must be fitted so that the relevant front or rear arrow follows the direction of rotation. Road handling and tyre wear may worsen, or damage to the tyre can occur in extreme circumstances if these instructions are not followed.

Tread depth
Worn out tyres influence the handling of a motorcycle and thereby reduce the capacity for safe driving. The recommended minimum tread depth is 2 mm.

Pre-emptive Puncture Sealants

In line with all motorcycle tyre manufacturers, TST Racing & Performance Tyres does not recommend or condone the use of pre-emptive puncture sealants. It is possible that they can mask secondary damage, which may result in further damage being done to the tyre. They add rotational, unsprung weight to the bike- this is possibly the worst area that you could add weight to a bike and it may result in reduced suspension performance and slower steering response. These sealants also have to be renewed every time a tyre is changed with the obvious cost and there is also a charge for removing the old sealant and cleaning the wheel.

We have always advised that riders should carry a temporary puncture repair kit or at least a tin of tyre weld.

Finally, the use of these pre-emptive sealants invalidates any warranty claim against the tyre manufacturers in the event of a tyre issue.

Dyno testing.

Dyno testing places extreme high loads in concentrated areas on motorcycle tyres. It is possible that damage, invisible to the naked eye, can occur to the tyres construction during the dyno runs.

It is always advantageous to have your dyno runs on tyres getting towards the end of their life. It is always advisable to replace tyres after a dyno session before using the bike for any prolonged use on road or track.

 

 

Hours of business

 Monday – Friday :  8.30 to 5.30

Saturday : 8.30 to 2.00

Closed Sunday & Bank Holidays

 

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Remember

It’s more than mail order at TST

Take advantage of our “Ride in – Ride out” service, relax in the comfortable waiting area whilst having your wheels removed and replaced by our Technicians at a small extra charge.

 

Last modified: 28-03-08