Radio Systems CT-2002 Owner's Manual download pdf (Page 168)

166

Tread dept h

Check tread depth regularly. Should the

front tyres show greater wea r than the rear

tyres, have both front wheels excha ng ed

with the rear wheels so that the tyres w ith

de epe r tread are on the front ax le.

For reasons of safety, tyres should be

replaced when their tread depth has worn

down to 2 to 3 mm (winter tyres: 4 mm).

The leg ally permissible minimum tread

depth (1.6 mm) has been reached when

the tread has worn down as far as one of

the wear indicators (TWI

1)

). A number of

wear indicators are spaced at equal

intervals around the tyre within the tread.

Their position is indicated by markings on

the tyre sid ewall.

General information

z The risk of aq ua planing is greater if the

tyres are worn.

z Tyres age, even if they are used only very

little or not at all. A spare wheel which

has not been used for six years should be

used only in emergencies; drive slowly

when using such tyres.

z Never fit used tyres the previous history

and use of which you do not know.

z So as not to impair b ra ke cooling, use

only wheel trims approved for use on

your vehicle.

Tyre designations

Meanings:

e.g. 19 5/ 6 5 R 15 91 V

195 = Tyre width in mm

65 = Aspect ratio

(tyre height to tyre width) in %

R = Belt type: Radial

15 = Wheel d ia mete r in inche s

91 =Load index

e.g.: 91 for 618 kg (1362 lbs)

V =Speed code

Speed code letters:

Q Up to 160 km/h (100 mph)

S Up to 180 km/h (112 mph)

T Up to 190 km/h (118 mph)

H Up to 210 km/h (130 mph)

V Up to 240 km/h (150 mph)

W Up to 270 km/h (168 mph)

1)

TWI = Trea d Wear Indicator.

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