Radial Tire Waddle; Equipment Manufacture’s Recommendations - Suzuki Ignis Service Manual

3-6 STEERING, SUSPENSION, WHEELS AND TIRES
1) Ride vehicle to determine whether the front or rear waddles.
2) Install tires and wheels that are known to be good (on similar vehicle) in place of those on waddling end of
vehicle. If waddling end cannot be identified, substitute rear ones.
3) Road test again. If improvement is noted, reinstall originals one at a time till waddle causal tire is found. If no
improvement is noted, install known-good tires in place of all four. Then reinstall originals in the same man-
ner as above.
EQUIPMENT MANUFACTURE'S RECOMMENDATIONS
Road test vehicle on level unrowned road in both directions
Leads in same direction
Put tires back in original position
and check alignment

RADIAL TIRE WADDLE

Waddle is side to side movement at the front and/or rear of the
vehicle. It is caused by the steel belt not being straight within the
tire. It is most noticeable at a low speed, 8 to 48 kph (5 to 30
mph).
It is possible to locate the faulty tire by road testing the vehicle. If
it is on the rear, the rear end of the vehicle shakes from side to
side or "waddles". To the driver in the seat, it feels as though
someone is pushing on the side of vehicle.
If the faulty tire is on the front, waddling is more visual. The front
sheet metal appears to be moving back and forth and the driver
feels as though he is at the pivot point in vehicle.
Waddle can be quickly diagnosed by using Tire Problem Detector
(TPD) and following the equipment manufacture's recommenda-
tions.
If TPD is not available, an alternative method of substituting
known-good tire/wheel assemblies can be used as follows,
although it takes a longer time.
In flate tires to recommended pressure
Switch front tires side to side and road test again
Lead corrected,
if roughness results, replace tires
Lead corrected replace tire
Lead corrected replace tire
Leads reverses direction
Install a known-good tire on one front side
Lead remains install a known-good
tire in place of other front tire
Lead remains known-good tires are not good