Mazda MX-30 2020 Owner's Manual page 461

Maintenance and Care
Owner Maintenance
Also, inspect them for uneven wear
and damage. Abnormal wear is usually
caused by one or a combination of the
following:
Incorrect tyre pressure
Improper wheel alignment
Out-of-balance wheel
Severe braking
After rotation, inflate all tyre pressures
to specification (page 9-5) and
inspect the wheel nuts for tightness.
CAUTION
Rotate unidirectional tyres and radial
tyres that have an asymmetrical tread
pattern or studs only from front to rear,
not from side to side. Tyre
performance will be reduced if rotated
from side to side.
▼ Replacing a Tyre
WARNING
Always use tyres that are in good
condition:
Driving with worn tyres is dangerous.
Reduced braking, steering, and
traction could result in an accident.
Replace all four tyres at the same
time:
Replacing just one tyre is dangerous. It
could cause poor handling and poor
braking resulting in loss of vehicle
control. Mazda strongly recommends
that you replace all four tyres at the
same time.
If a tyre wears evenly, a wear indicator
will appear as a solid band across the
tread.
6-28
Replace the tyre when this happens.
1. New tread
2. Worn tread
3. Tread wear indicator
You should replace the tyre before the
band crosses the entire tread.
▼ Replacing a Wheel
WARNING
Always use wheels of the correct size
on your vehicle:
Using a wrong-sized wheel is
dangerous. Braking and handling could
be affected, leading to loss of control
and an accident.
CAUTION
A wrong-sized wheel may adversely
affect:
Tyre fit
Wheel and bearing life
Ground clearance
Snow-chain clearance
Speedometer calibration
Headlight aim
Bumper height
Tyre Pressure Monitoring System