What is Central Tyre Inflation?

From Military Vehicle Technology To Forestry Trucks and Trailers

Where it came from...

reduce tyre wear on trucks and trailersCentral tyre inflation systems were created in the 1940′s to increase the mobility of rubber tired military vehicles on weak, poor traction surfaces, such as desert sands.

Today, military central tyre inflation systems number in excess of 25,000 units and, in addition to the obvious mobility benefits, they also discovered the systems helped reduce road maintenance and construction costs, improved traction, and provided savings on truck and tyre wear.

Central tyre inflation for forestry…

Forestry truck and trailer central tyre inflation systems in New ZealandRealising the potential of CTI systems to reduce costs associated with low volume forest roads, the U.S. Forest Service began to seek ways to use these systems on heavy forestry trucks.

A structured test at the Nevada Automotive Test Center found that lowering tyre pressures reduced traffic related road maintenance by up 80% and healed ruts on unpaved roads.

This test also found that truck component damage was reduced by as much as 85% on a rough road course.

Paraphrased from an article prepared by the Forest Engineering Research Institute of Canada – Institut Canadien Recherches En Genie Forestier

Central tyre inflation tests in New Zealand…

Documented tests in New ZealandDocumented tests in New Zealand, USA and Canada have concluded that low pressure tyre inflation is completely safe, stable, and the truck ride and wear are greatly improved when using lower pressures.

In the early 1990s, LIRO – Logging Industry Research Organisation (now part of Forest Research New Zealand) assisted in developing a central tyre inflation system.

The traction and gradeability tests demonstrated on sandy soils a 34% increase in peak drawbar pull is possible, with a 17% increase on saturated clay soils. A 17% increase very roughly translates into an additional 2% gradeability.