Subaru Impreza 2003 Service Manual page 2177

5. Wheel Balancing
A: REPLACEMENT
1) Remove the balance weights.
2) Using wheel balancer, measure the wheel bal-
ance.
3) Select a weight close to the value measured by
wheel balancer.
Balance weight part number
(For steel wheel)
28101TC000
28101SA060
28101SA070
28101SA080
28101SA090
723141340
723141350
723141360
723141370
723241380
723241580
723241590
Balance weight part number
(For aluminum wheel)
28101SA000
28101SA010
28101SA020
28101SA030
28101SA040
23141GA512
23141GA522
23141GA532
23141GA542
23141GA552
—
23141GA572
4) Install the selected weight to the point designat-
ed by wheel balancer.
5) Using wheel balancer, measure the wheel bal-
ance again. Check the wheel balance is correctly
adjusted.
WHEEL BALANCING
Weight
5 g (0.18 oz)
10 g (0.35 oz)
15 g (0.53 oz)
20 g (0.71 oz)
25 g (0.88 oz)
30 g (1.06 oz)
35 g (1.23 oz)
40 g (1.41 oz)
45 g (1.59 oz)
50 g (1.76 oz)
55 g (1.94 oz)
60 g (2.12 oz)
Weight
5 g (0.18 oz)
10 g (0.35 oz)
15 g (0.53 oz)
20 g (0.71 oz)
25 g (0.88 oz)
30 g (1.06 oz)
35 g (1.23 oz)
40 g (1.41 oz)
45 g (1.59 oz)
50 g (1.76 oz)
55 g (1.94 oz)
60 g (2.12 oz)
WT-7
B: INSPECTION
1) Proper wheel balance may be lost if the tire is re-
paired or if it wears. Check the tire for dynamic bal-
ance, and repair as necessary.
2) To check for dynamic balance, use a wheel bal-
ancer. Drive in the balance weight on both the top
and rear sides of rim.
3) Some types of balancer can cause damage to
the wheel. Use an appropriate balancer when ad-
justing the wheel balance.
4) Use genuine balance weights.
NOTE:
• 55 g (1.94 oz) weight used with the aluminum
wheel is not available.
• Balance weights are available for use with any of
14- to 16-inch wheels.
(1) Weight for aluminum wheel
(2) Weight for steel wheel
Service limit: A
Weight for steel wheel;
5 g (0.18 oz) — 25 g (0.88 oz) 2.0 mm (0.08
in)
30 g (1.06 oz) or more 1.8 mm (0.07)
Weight for aluminum wheel;
5 g (0.18 oz) — 25 g (0.88 oz) 5.0 mm (0.20
in)
30 g (1.06 oz) or more 4.5 mm (0.177 in)
WHEEL AND TIRE SYSTEM
A
A
WT-00006