Truck tyres

The objective of Research and Development for the Truck Business Unit is to strike the greatest possible balance amongst the top characteristics of a tyre: performance, safety and respect for the environment. In other words, this involves reducing its overall environmental impact while remaining focused on improving the product’s performance.

From the design stage on, Pirelli takes all product use condition, including abnormal ones. This permits the development of tyres that do not stop at “compliance with legal regulations,” but have all the characteristics necessary to guarantee complete safety, both for the customer and for the surrounding environment, in accordance with the highest Pirelli product standards.

Numerous eco-compatibility features characterise the new generations of Pirelli Truck tyres, beginning with the reduction in weight that in turn reduces both the quantity of raw materials and energy needed to make them. But that is not all: reusable materials that are employed and their durability are reflected in the duration of the “first life” of the tyre and the number of times that the same casing can be used for retreading the tyre.

Series 01, the tyre line for commercial vehicles launched in 2009 in the Regional (FR:01 and TR:01) and Trailer (ST:01) segments, was expanded in 2011 to three new lines designed for use in critical winter conditions W:01 (winter), long-distance auto transport H:01 (highway), and construction equipment G:01 (gravel, on/ off) for a total of six new products available in 22 different sizes. The key features of this product are illustrated as follows.

Truck product - A specific design for any need

Truck product - A specific design for any need

All new Series 01 tyres share the latest generation SATT™ structure, the most advanced one used to make Truck tyres, which lies at the basis of longer product life, high retreadability, extremely regular wear and tear, and more precise driving. Compounds and tread patterns are designed and optimised according to the performance requested for different uses.

In 2011 Pirelli also introduced new tyres for use on semi-tractor trailers in the H segment (Highway – long distance). This is the 445/45 R 19.5” ST:01 tyre that, like the 435/50 R 19.5 size, is intended mainly for equipping “mega trailers”, i.e. semi-tractor trailers for transporting large volumes. This tyre is enjoying broad application because it offers the possibility of maximising loads and volumes, allowing fleets to streamline their operating costs. At this time, Pirelli is the only tyre maker in Europe with both sizes of tyres, confirming its wish to satisfy the demands of the most fleets.

In Series 01 product lines, eco-impact icons on the tyre sidewall show a summary of its performance benefits. In particular:

  • High durability and uniform wear of tyre treads, achieved by using high specific yield compounds, the new TWST structure together with an optimised profile assure even wear and tear of the entire tyre tread surface.
  • Highly retreadable, construed as the greater residual durability at the end of the tyre’s first life thanks to the new TWST structure combined with compounds having low hysteresis (i.e. generating less heat), with the hexagonal flush ring and reinforced bead.
  • Low rolling resistance (already in compliance with 2016 regulatory limits) and consequent reduction in fuel consumption and CO2 emissions.
  • Low noise, construed as silence and driving comfort, anticipating the 2012 European noise abatement regulation.

Between the characteristics described above and the use of materials without highly aromatic oils (HAOF), the Series 01 represents a major step forward towards reduction of environmental impact by simultaneously guaranteeing excellent driving performance.

The following info-graphics use an example to summarise the Green Performance innovation of the Series 01, with focus on the new Winter 01.

WINTER 01: performance graph

WINTER 01: performance graph

 

WINTER 01: Wet performance

WINTER 01: Wet performance

 

WINTER 01: Key points

WINTER 01: Key points

The Pirelli Novateck retreading system enhances the high quality of the tyre by extending tyre life by 30%, as clearly illustrated in the following graphics. This translates into reduced environmental impact, in terms of reduced quantity of raw materials used, greater production efficiency and reduced number of tyres requiring disposal.

Tyre life: environmental impact

Tyre life: environmental impact