Bridgestone Medium and Light Truck Tire Data Book - Sullivan Tire ...

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Effective January 2010 Inflation pressure effects Inflation pressure effects are relatively small, but you can expect about a 2 percent improvement in fuel efficiency over a range of 20 PSI below to 20 PSI above recommended pressure. Inflation Pressure Effect on Fuel Economy Percent Improvement +2 +1 0 -1 -2 80 90 100 110 120 Pressure (PSI) Regardless of the type of tires you use, maintaining correct inflation pressure for the load will optimize tire performance, tire life, and fuel economy. Position contribution to fuel economy In general, the contribution of the tires on any given axle to overall vehicle fuel efficiency is roughly determined by the amount of load on that axle. In general, trailer tires make the largest contribution. If you are evaluating tires, you should probably try fuel-efficient trailer tires first. If that doesn’t work, changing drive and steer tires probably won’t either. Axle Weight Distribution & Position Contribution to Fuel Economy 80,000 lb. single trailer 34,000 lb. 42% 43% 51,000 lb. 63% 64% 34,000 lb. 42% 39% 12,000 lb. 16% 18% 18,000 lb. 23% 20% WEIGHT weight percentage fuel consumption 11,000 lb. 14% 16% General Technical Information What effect can fuel-efficient tires have Generally you will only see about half of the scientific test results in the real world. Much of this is because of interference by other factors outside the controlled variables of testing. So, any fuel economy method that does not produce at least a 2-percent improvement in controlled testing will probably not produce a measurable real-world effect. Taking action BBTS recommends you conduct your own tests to determine whether your investment will achieve a satisfactory return. Comparing fuel receipts with odometer readings is something you can do yourself, on an ongoing basis, to see if your fuel economy program is working. Here are some steps to take: Recommendations 1 Test 2 Limit 3 Consider 4 Try 5 Examine 6 Call things yourself: If you can’t convince yourself and your accountant, what you’re saving may be too small to stand out from the “noise.” your investment: Try trailer tires first, or better still, try fuel-efficient trailer retreads first. all the variables: Fuel-efficient duals may save just as much fuel as wide base tires, without forcing you to buy new wheels. If you can’t benefit from the weight savings, why spend the money other methods: Driver behavior has a big effect on fuel economy. Driver training or incentives may be a better investment than new equipment. your priorities: Make sure everyone is on board. If one department is trying to save fuel and another is trying to cut tire costs, they may be working against each other. for help: Your tire supplier can help you with advice and in conducting tests. Call BBTS for assistance at 1-800-847-3272. Try TLCC Remember, only BBTS has the Tire Life Cycle Cost (TLCC) program, to help you make informed tire choices. Your BBTS representative will help you analyze your current tires (even if they are from BBTS competitors), and recommend tires that will produce the lowest overall tire and fuel cost over their useful life. Medium Truck Light Truck General Technical Load/Inflation Technical Bulletins 87
General Technical Information Y. Truck Type by Weight Class 2010 Bridgestone Medium and Light Truck Tire Data Book Technical Bulletins Load/Inflation General Technical Light Truck Medium Truck Van Doubles Liquid Tanker Dry Bulk Logger Platform Drop Frame Dump Reefer Deep Drop Auto Trans Note: Trailer weight not listed. 88
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