Suzuki Grand Vitara JB416 / JB420. Manual - part 157
2D-2 Wheels and Tires:
WARNING
!
Do not mix different types of tires on the
same vehicle such as radial, bias and bias-
belted tires except in emergencies, because
handling may be seriously affected and may
result in loss of control.
The metric term for tire inflation pressure is the kilo
pascal (kPa). Tire pressures is usually printed in both
kPa and kgf/cm
2
on the “Tire Placard”.
Metric tire gauges are available from tool suppliers.
The chart, shown the table, converts commonly used
inflation pressures from kPa to kgf/cm
2
and psi.
Wheels Description
S5JB0A2401002
Wheel Maintenance
Wheel repairs that use welding, heating, or peening are
not approved. All damaged wheels should be replaced.
Replacement Wheels
Wheels must be replaced if they are bent, dented, have
excessive lateral or radial runout, air leak through welds,
have elongated bolt holes, if lug nuts won’t stay tight, or
if they are heavily rusted. Wheels with greater runout
than shown in the following may cause objectional
vibrations.
Replacement wheels must be equivalent to the original
equipment wheels in load capacity, diameter, rim with
offset and mounting configuration. A wheel of improper
size or type may affect wheel and bearing life, brake
cooling, speedometer / odometer calibration, vehicle
ground clearance and tire clearance to body and
chassis.
How to Measure Wheel Runout
To measure the wheel runout, it is necessary to use an
accurate dial indicator. The tire may be on or off the
wheel. The wheel should be installed to the wheel
balancer of the like for proper measurement.
Take measurements of both lateral runout “a” and radial
runout “b” at both inside and outside of the rim flange.
With the dial indicator set in place securely, turn the
wheel one full revolution slowly and record every reading
of the indicator.
When the measured runout exceeds the specification
and correction by the balancer adjustment is impossible,
replace the wheel. If the reading is affected by welding,
paint or scratch, it should be ignored.
Wheel Runout
Metric Lug Nuts and Wheel Studs
All models use metric lug nuts and wheel studs.
Metric lug nuts and wheel studs size
M12 x 1.25
If a broken stud is found, see “Front Wheel Hub, Disc,
Nut and Bearing Check in Section 2B”, “Rear Wheel
Disc, Nut and Bearing Check in Section 2C”, “Front
Wheel Hub Assembly Removal and Installation in
Section 2B” and/or “Rear Wheel Hub Assembly Removal
and Installation in Section 2C”, for Note and
Replacement procedure.
Irregular and/or Premature Wear Description
S5JB0A2401003
Irregular and premature wear has many causes. Some
of them are as follows: incorrect inflation pressures, lack
of tire rotation, driving habits, improper alignment.
If the following conditions are noted, rotation is
necessary:
• Front tire wear is different from rear.
• Uneven wear exists across the tread of any tire.
• Both side of front tire wears are not even.
• Both side of rear tire wears are not even.
• There is cupping, flat spotting, etc.
A wheel alignment check is necessary if following
conditions are noted:
• Both side of front tire wears are not even.
kPa
kgf/cm
2
psi
bar
Conversion:
1 psi =
6.895 kPa
1 kgf/cm
2
=
98.066 kPa
1bar =
100 kpa
160
1.6
23
1.6
180
1.8
26
1.8
200
2.0
29
2.0
220
2.2
32
2.2
240
2.4
35
2.4
260
2.6
38
2.6
280
2.8
41
2.8
300
3.0
44
3.0
Lateral runout
limit
Radial runout
limit
Steel wheel
1.20 mm
(0.047 in.)
0.70 mm
(0.027 in.)
Aluminum wheel
0.30 mm
(0.011 in.)
0.30 mm
(0.011 in.)
I4RS0A240001-01
I2RH01240003-01