The graph shows the change in energy-related emissions of ozone precursors (NOx, NMVOC, CO and CH4) each weighted by an ozone formation factor prior to aggregation to represent their respective ozone forming potentials. The relative impact of the combined contribution of NOx, NMVOC, CO and CH4 to ozone formation can be assessed based on their tropospheric ozone forming potentials (TOFP): nitrogen oxides 1.22, non-methane volatile organic compounds 1.0, carbon monoxide 0.11 and methane 0.014 (de Leeuw 2002).
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This will reduce wear and tear on them and increase their longevity, thereby saving money. It also saves precious raw material: it takes 27 litres of crude oil to produce a new tire. Under-inflated tyres also increase fuel consumption by up to 10%. Check your tyres at least once a month. It takes but a few minutes.
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