SsangYong Korando III (2010 year). Service manual — part 248

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2. OPERATION

When the driver turns the steering wheel, a torque is generated and the torque sensor and the steering

angle sensor in the EPS system detect the rotation of the steering column to run the electric motor. At

this time, the worm gear connected to the motor drives the helical gear mounted to the steering column

to generate the assist torque for the steering column. This allows the driver to operate the steering wheel

easier.

Output torque = 1) Steering force (manual torque) + 2) Assist torque

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1. SPECIFICATION

1) Appearance of Wheels

16 inch: 215/65R 16

17 inch: 225/60R 17

18 inch: 225/55R 18

Description

Specification

Remark

Tire

16 inch

215 / 65R 16

Standard

17 inch

225 / 60R 17

Optional

18 inch

225 / 55R 18

Optional

Tire inflation pressure

32psi

-

Wheel

16 inch

6.5 J X 16

Standard

17 inch

6.5 J X 17

Optional

18 inch

6.5 J X 18

Optional

Balance weight

Inner: Clip-on type

Outer: Adhesive type

-
-

Tightening torquse of wheel bolt

127.4 ~ 156.8 Nm

17mm X 5

(Length:56.5 mm)

14-4

1. OVERVIEW

A radial tire uses a cord angle of 90 degrees. That is, the cord material runs in a radial or direct line from

one bead to the other across the tread. In addition, a radial tire has a belt overwrap under the tread

surface to provide greater structural stability. The belt overwrap of a radial tire distortion while the radial

structure enables high speed driving.

Tire supports the weight of the vehicle, reduces the impact from the road and at the same time,

transmits the power to propel, brake and steer on the road. It also functions to maintain a
vehicle’s movement. In order to complete such tasks, a tire must be structured to be a resilient

vessel of air.

There is wear limit mark on the tire, which protrudes as a strip shape located approximately 1.6 mm from
the groove bottom. This wear limit mark is not seen from the outside so there is additional "▲"

mark on the shoulder to let the driver find the wear mark easily. To measure the tire groove depth,

measure at any point other than the point which has a wear limit mark.

The tire is worn unevenly according to the driver's driving habit, improper servicing, low tire inflation

pressure, changed tire location, etc.

1) Structure of Tire

Tread

This thick layer of rubber provides the interface

between the tire and the road. Wear-resistant

rubber is used to protect the carcass and belt

against fractures and impacts and to deliver a

long driving life.

Shoulder

Located between the tread and sidewall, the

shoulder rubber is the thickest so that the design

must allow for the easy diffusion of heat

generated within the tire while driving.

Sidewall

The part between the shoulder and bead, the

flexible sidewall protects the carcass and
enhances the ride. A tire’s type, size,

structure, pattern, manufacturing company,

product name and various characters are

indicated here.

Bead

The bead attaches the tire to the rim and wraps

the end of the cord fabric. Comprised of the bead

wire, core, flipper and other parts, the bead is

generally designed to be slightly tight around the

rim so that in the case of a sudden drop in inflation

pressure, the tire will not fall off the rim.

Carcass

As the most important framework of a tire, the

entire inner layer of cord fabric is called the

carcass. The carcass acts to support air pressure,

vertical load and absorb shocks.

Valve

Belt

Bead core

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2) Tire Unit Indication

Aspect ratio (%)

= Nominal section height (H) / Nominal section

width (W)

X 100

3) Tire Inflation Pressure (32 psi)

Proper inflation pressure

Excessive inflation pressure

Low inflation pressure

The contact area between the

ground and tire faces the tread

layer completely. Thus the driving

force and the braking force are

optimized, and the tire is worn out

evenly resulting in increased life.

The contact area between the

ground and tire is not enough,

so the tire is worn out unevenly

and the tire is vulnerability to

outside influence.

The contact area between the

ground and tire is excessive, so

a lot of heat is generated and

the tire is worn out unevenly and

abnormally.

Tread width

Tread width

Tread width