Quote:
Originally Posted by evilskillit
In the following NHTSA tests higher inflation resulted in shorter braking distances, tho hyperinflation was not tested.
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In National Geographic's MegaFactories : Michelin, they had a test with a car with what they called
overinflated tyres.
The car with the overinflated tyres took some 10m more to stop.
They called it a car length, but you could slide a car inbetween both cars, so it's 2 car lengths ... or about 10m.
The question then surfaces :
What are they referring to as overinflation.
- Inflating above the car manufacturer's specs ?
- Inflation above the tyre manufacturer's specs ?
Let's see if NatGeo or Michelin can clear up that issue
On good road surfaces, I've noticed bugger all difference in braking distance between 2.8 and 3.5 bar (41 and 51 psi). I'd definitely notice a 10m increase.
What does happen is that on pretty bad roads, braking distance is increased because the suspension is not able to keep good contact with the road - at over 100K miles, the shocks are wearing out.