Tyres: The First to Fail

Of all the systems overloading attacks, tyres are the most likely to fail first and catastrophically.

Every tyre carries a load index — a coded maximum weight it's built to carry (Tyres shows how to read it: index → kilograms → × 4 against your loaded weight). Load a tyre past that rating and it flexes more than designed with every rotation; flexing generates heat; heat is what destroys tyres. In Kenya's climate — hot tarmac, long fast runs — an overloaded tyre can build heat to the point of sudden blowout, often at speed on the highway, which is close to the worst place and moment for a tyre to let go.

Note how it compounds: an overloaded tyre that is also under-inflated (flexing still more) and worn (less material to shed heat) is a blowout being scheduled rather than risked.

And the distribution point returns here too: a vehicle can be within its GVW and still blow a tyre, if the load happens to sit over an under-rated or under-inflated one. Total weight legal, that corner overloaded.

Key takeaways

Past its load index a tyre flexes more, flexing makes heat, and heat destroys tyres — producing the sudden highway blowout, compounded by under-inflation and wear
Being within GVW doesn't protect a single overloaded corner — where the weight sits decides which tyre fails

Quick check

Why do tyres tend to be the first thing to fail on an overloaded vehicle?

A) Because the extra weight wears the tread away faster

B) Because past the load index the tyre flexes more every rotation, flexing builds heat, and heat destroys the tyre — producing a sudden blowout, often at speed

C) Because overloading lowers tyre pressure automatically

D) Because the load index only applies to commercial vehicles