Fault Phenomenon: XCMG HB66K tires are normal when cold. After high-speed driving (operating temperature), a tire blowout occurs, the wheel rim deforms, and the vehicle breaks down.

Troubleshooting Process:
– Checked tire pressure: pressure meets standard.
– Checked tire wear: wear within allowable range.
– Checked wheel nuts: nuts tightened normally.
– Measured tire temperature at operating temperature: found temperature too high.

Root Cause: Aged and cracked tires have insufficient strength under high temperature and pressure, leading to blowout.

Required Parts: Spare tire and repair tools.