During a pre-trip inspection of a triples combination, why check the tires on every trailer and dolly, not just the tractor?

Pick an answer

1. Trailer tires are inspected by the shipper, not the driver, before the trip even begins
2. Trailer and dolly tires never wear out during normal use
3. Only the tractor's tires affect braking and handling
4. A tire problem on any unit can affect the stability or safety of the whole combination

Correct!

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