TYRES & CO 2 Page 1 Auteur Département Création Date Classification D Conservation WA+1 Référence Document
TYRES & CO 2 • Burning diesel produces CO 2 • Approx 2.63 kgs for every litre • Approx 1/3 of fuel is used overcoming RR of tyres 100% 90% 80% Aerodynamic forces 70% Vehicle resistive forces (%) 60% 50% Tire rolling resistance 40% 30% 20% 10% Internal vehicle friction (gear box, drive shaft, bearings, ...) 0% 1 4 7 10 13 16 19 22 25 28 31 34 37 40 43 46 49 52 55 58 61 64 67 70 73 76 79 82 85 88 91 94 97 100 Speed (km/h) Page 2 Auteur Département Création Date Classification D Conservation WA+1 Référence Document
TYRES & CO 2 – managing your tyres • Managing tyres can significantly reduce CO 2 emissions • Consider low RR tyres (Energy) tyres • Right tyre for the job – Energy tyres don’t solve everything • Pressures – correct pressures optimise wear, handling, fuel consumption and, therefore, CO 2 emissions • Alignment – 1 0 of misalignment = approx 3% loss of fuel efficiency • Regrooving Page 3 Auteur Département Création Date Classification D Conservation WA+1 Référence Document
TYRES & CO 2 – regrooving • A tyre’s rolling resistance decreases as it wears • Therefore just before a tyre is removed from a vehicle it is operating in its most fuel efficient state • By regrooving tyres they will continue to run longer when they are at their most fuel efficient Page 4 Auteur Département Création Date Classification D Conservation WA+1 Référence Document
TYRES & CO 2 – regrooving EXAMPLE: MICHELIN X MULTI D NEW NEW + REGROOVE NEW NEW New Tyre New Tyre 0 kms Tread Depth 23.5mm Tread Depth 17mm Low MPG Low MPG 17mm 75,000 kms Med MPG Med MPG 225,000 kms Hi MPG Hi MPG Regroove 2mm 300,000 kms 2 ------------------- Tyre + 3 mm REGROOVING ENSURES THAT APPROX 40% OF TYRE 375,000 kms LIFE IS SPENT AT THE HIGH MPG LEVEL ! Page 5 Auteur Département Création Date Classification D Conservation WA+1 Référence Document
TYRES & CO 2 – regrooving Page 6 Auteur Département Création Date Classification D Conservation WA+1 Référence Document
TYRES & CO 2 – regrooving Rolling Resistance Calculation (Laden) 315/70 R 22.5 Rolling Rolling Res. Axle No. Tread Pattern Axle Load (T) Res.(kg) Tread Pattern Axle Load (T) (kg) X Multi Z 6.700 36.18 X Multi Z RG 6.700 21.44 1 2 X Multi D 9.000 55.8 X Multi D RG 9.000 28.8 91.98 50.24 Calculated RR (Kg) 91.98 50.24 Calculated reduction in rolling resistance (kg): 41.74 X Multi RG v X Multi will reduce RR by 45.38% Approximate possible resultant fuel saving 15.13% Page 7 Auteur Département Création Date Classification D Conservation WA+1 Référence Document
TYRES & CO 2 – regrooving • If a 4x2 rigid does 11 mpg, that equates to 25.68 litres per 100 kms. • 1000 kms = 256.8 litres • 256.8 litres – 15% = 218.28 litres • i.e. a saving of 38.52 litres OR 101.3 kgs of CO 2 saved per 1000 kms Page 8 Auteur Département Création Date Classification D Conservation WA+1 Référence Document
TYRES & CO 2 – regrooving Millbrook trial Rigid (New vs. Regroove Combined) TEST MPG XZE2+/XDE2 REMIX 10.43 100.00% 11.74 112.58% XZE2+RG/XDE2 RG IMPROVEMENT IN MPG OF REGROOVE ALL ROUND OVER NEW & REMIX 12.58% 112.58% 115.00% 110.00% Michelin XZE2+/XDE2 105.00% Remix = 100% 100.00% 100.00% XZE2+/XDE2 REMIX 95.00% XZE2+RG/XDE2 RG 90.00% Page 9 Auteur Département Création Date Classification D Conservation WA+1 Référence Document
TYRES & CO 2 – regrooving Regrooving percentages • What percentage of tyres is regrooved? • 1 st life tyres returned for Remix • 45.5% • Remix tyres returned for Encore • 41.5% • That’s a lot of CO 2 that is not being saved Page 10 Auteur Département Création Date Classification D Conservation WA+1 Référence Document
THAN THANK K YOU OU FOR FOR LIST LISTENIN ENING Page 11 Auteur Département Création Date Classification D Conservation WA+1 Référence Document
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