BTS25, Features

The benefits of correct tyre pressure

AIR CTI (Central Tyre Inflation) system is easy to use, easy to live with, and a great investment in your business. Return on investment is usually within the first year.  Often much quicker.

AIR CTI put its history of innovation, and thinking outside the box to work, developing a better CTI back in 1990s, and proving the enormous benefits of CTI.

So, what is this AIR CTI? 

Australian owned and manufactured, AIR CTI is a tool that makes vehicles work better, easier, safer and lowers costs. It allows drivers to adjust the tyre pressure for the load, and the road/terrain, and makes the driver aware of punctures or slow leaks. AIR CTI re-inflates automatically, virtually eliminating blow outs and roadside tyre changes.

The Air CTI system has a dash mounted display controller. Image: AIR CTI

The system has a dash mounted display controller, putting the driver in control, providing set pressures and current pressures in real time. A press of the button increases or decreases the tyre pressure, as you are driving. Once pressure is set, the intuitive system maintains that pressure.   

Correct tyre pressure depends on the load on the tyre, the tyre size, and the road/track or terrain conditions. 

Correct use of tyre pressures is the most misunderstood feature of modern vehicles. Quality tyre suppliers have the charts, the entire details of what pressure to use where, and for what load.   

There is one and only one correct tyre pressure for each tyre load for highway use. In other words, every time the load changes, the tyre pressure should be changed. And when the conditions (road) change, so should the tyre pressure.

The correct tyre pressure on the highway will provide a correct, evenly loaded tyre footprint with sufficient sidewall stiffness for cornering, and limited sidewall flex to control heat build-up. This pressure provides the best tyre wear, while providing the best compromise of all other benefits pneumatic tyres provide.   

Gravel roads need different tyre pressures than highways. Dirt roads need different pressures, as do sand, mud, rocks or snow. Different conditions require different tyre pressures.

The correct pressure will provide a flat spot where the tyre meets the road, typically around 10 per cent of the tyre diameter (measured at the shoulder). Look at a fully laden truck and notice how long the flat contact patch is. Then look at an empty truck tyre. Now ask yourself why so many trucks jack knife, run off the road, and why they need ABS, and electronic brake systems. If your tyre does not bulge out slightly, if there is no flat spot on the ground, you have too much tyre pressure.

If you add weight, you need more tyre pressure to maintain that flat spot. When towing trailers, most of the time, it is a good idea to increase tyre pressure in the rear tyres to help minimise sideways tyre flex.   

On gravel and dirt roads, you want more contact patch, with more tyre flexibility. This conforms to the irregularities better, engulfing rocks and stones, and provides much more traction in all conditions. Otherwise, you’re only sitting on top of the highest points, which is on top of the stones and gravel, which provides little grip, a bit like sitting on ball bearings. 

Typically, softer tyres will grip mud, wet clay, soft gravel, sand, and snow better, providing safer travel, with greater safety, less tyre damage, and far less breakage of suspensions and axles. 

Softer tyres also minimise suspension wear and tear, and breakage, and improves traction. It lowers drive train loads, and eliminates most axle tramp, virtually eliminating axle breakage. Softer tyres are easier to drive on.  Softer tyres float better on soft ground; and significantly reduce environmental damage.

The correct tyre pressure depends upon the tyre size and the weight upon it. The more weight, the more air pressure required.

Stand: 10

Phone: 03 5127 6128

Web: aircti.com

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