Mazda mx-5 2017 Owner's Manual page 221

NOTE
Because this system detects slight changes in tire conditions, the timing of the warning may
be faster or slower in the following cases:
The size, manufacturer, or the type of tires is different from the specification.

The size, manufacturer, or the type of a tire is different from the others, or the level of tire

wear is excessively different between them.
A run-flat tire, studless tire, snow tire, or tire chains are used.

An emergency tire is used (The tire pressure monitoring system warning light may flash

and then continue illuminating).
A tire is repaired using the emergency flat tire repair kit.

The tire pressure is excessively higher than the specified pressure, or the tire pressure is

suddenly lowered for some reason such as a tire burst during driving.
The vehicle speed is lower than about 15 km/h (9.3 mph) (including when the vehicle is

stopped), or the drive period is shorter than 5 minutes.
The vehicle is driven on an extremely rough road or a slippery, icy road.

Hard steering and rapid acceleration/deceleration are repeated such as during aggressive

driving on a winding road.
Load on the vehicle is applied to a tire such as by loading heavy luggage to one side of

the vehicle.
System initialization has not been implemented with the specified tire pressure.

Tire Pressure Monitoring System
When Driving
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