A suggested way to reduce fuel consumption in a fleet is to equip vehicles with low rolling resistance tyres. Speaking to Nobuzwe Mangcu of the South African Tyre Manufacturers Conference, Tristan Wiggill gets to grips with the everyday viability of this option.

Is low rolling resistance tyre technology the next big thing for commercial vehicles?

NM Low rolling resistance technology for commercial tyres is being used extensively across the world and has been around for more than a decade. Low rolling resistance commercial vehicle tyres, from a variety of brands, are readily available in the South African market today.

Do low rolling resistance tyres really reduce costs in a fleet, and what evidence is there to support this claim?

Low rolling resistance is achieved through a combination of the tread compound used, as well as the tread and carcass design employed.

Fuel savings and engine emission reductions have been proven in controlled, state testing facilities. Real-world savings for operators under day-to-day conditions may vary according to the routes that are driven, level of tyre maintenance performed, driving habits, and topography, among other factors. Even so, real cost reductions for fleets have been recorded.

Fleet and tyre maintenance is essential to achieving optimum tyre performance and lowering tyre costs. Basic maintenance procedures, such as the monitoring of inflation pressures, load control, driver training, and vehicle geometry (alignment), together with correct tyre design selection for the topography and road conditions, will go a long way to achieving the benefits.

Do these tyres cost more? If so, is it not better to buy cheaper, ‘normal’ tyres?

While the initial capital outlay may be higher, the offset in operating cost reductions makes it worthwhile, especially in the case of fleet operators. The return on investment is soon realised. The fact that these tyres fit on to standard rims is hugely helpful, as well, ensuring that no additional fitment costs are incurred during purchase or when replacing.

What about their longevity and suitability to capricious African road conditions?

It is a myth that low rolling resistance tyres compromise robustness of design to achieve their fuel-saving results. There is also no compromise paid to wet grip (braking) performance, lateral stability, or ride comfort. As you mention, driving conditions along African roads vary greatly from region to region. Therefore, one of the most important considerations to make when purchasing tyres is to ensure that the most suitable design within the tyre family is chosen. That, together with basic and ongoing tyre maintenance, ensures tyre longevity.