ERJ staff report (DS)
Washington DC - In a 58-page report, the United States-based organisation NHTSA concludes that tyre pressure monitoring systems (TPMS) are effective in combatting under-inflation of tyres.
In a survey, the organisation studied tyre pressure in over 6000 vehicles. Of those without a TPMS, 23 percent had at least one tyre showing an under-inflation of 25 percent or more. In those fitted with a TPMS, the figure fell to 11.8 percent.
NHTSA said, â€œBased on these results, the presence
of TPMS on a vehicle of model years 2004 to 2007 is estimated to result in a 55.6-percent reduction in the
likelihood that the vehicle will have one or more severely underinflated tyres as defined by FMVSS No. 138.
The organisatino concluded, â€œ During the first eight years of operation TPMS is estimated to save a typical passenger car 9.32
gallons of fuel and a typical LTV 27.89 gallons of fuel. During 2011 TPMS is estimated to have saved $511
million across the vehicle fleet through reduced fuel consumption.â€
NHTSA is seeking comments, which should be submitted before 19 March 2013.
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58-page report from NHTSA