Operating a commercial motor vehicle at sustained highway speeds in extreme ambient temperatures causes tire air pressure to rise above cold-inflation specifications; releasing this built-up pressure while the tires are hot will cause dangerous underinflation and accelerated heat accumulation once driving resumes.
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Answer
True
Commercial motor vehicle tires experience a normal increase in air pressure as ambient heat and rotational friction warm the trapped air. Releasing air to bring a hot tire back down to its cold-inflation rating removes vital air mass. This creates an underinflated condition that increases sidewall flexing, generates extreme internal heat, and significantly multiplies the danger of a blowout or tire fire.
Step-by-Step Solution
Key Concept
Tire Pressure and Thermal Management in Hot Weather Driving
Estimated Time:1m 30s