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Several companies are testing a wide range of innovative delivery ideas to gain an edge in growing logistics and transportation space.

A tiny rock, de-icing material or salt and sand can start the process of turning a perfectly good wheel into a rust-covered embarrassment or, worse, a safety hazard. To prevent that from happening, motor carriers are using effective maintenance techniques, while manufacturers are producing more corrosion-resistant wheels.

National sales data for off-road tires aren’t available because, compared with on-road tires, so few are produced.

As with on-road tires, incorrectly inflated vocational tires can be problematic — and so can mismatched tires.