FAQs

Facts, Figures, and Quotes on Truck Alignment

  1. Toe error of ¼ inch will shorten tread life by 25% – Asa Sharp – Goodyear Tire & Rubber Co: from Heavy Duty Trucking, April 1984
  2. Correct Vehicle Alignment will improve fuel mileage by ½ to one mile per gallon – Chuck Koske – Peterbuilt Motors Co: from Heavy Duty Trucking, April 1984
  3. New vehicles do need alignment, especially tandem axles – Jim J.C. Charlesworth – Associated Grocers of Colorado: Heavy Duty Trucking, April 1984
  4. On new equipment, toe changed 1/32 inch in the first 100,000 miles, and 1/16 to 1/8 inch in the next 100,000 miles. Chuck Charlesworth – Associated Grocers of Colorado -Heavy Duty Trucking, April 1984
  5. As much as 80% of class 8 trucks may have a front wheel alignment problem, and possibly 70 % have a rear-wheel problem – Goodyear Tire & Rubber Co: from Fleet News 7/85
  6. The Maintenance Council recommends an all-wheel alignment at the first PM between 15,000-30,000 miles and every 80,000-100,000 miles thereafter. . RP 642, pg. 2
  7. 10% underinflation will shorten a tire’s tread life by 9% to 16%. – The Technology and Maintenance Council – Fleet Owner Online May 2001
  8. Underinflation by just 10 psi will probably cost a fleet about ½% in miles per gallon. At 100,000 miles per year, a fleet would use an extra 84 gallons of diesel per truck. – Bridgestone/Firestone – Fleet Owner Online May 2001
  9. Though TMC’s research reports that it takes about 20 minutes to check and adjust inflation pressure on an 18-wheeler, if a fleet does this once a week, chances are it will have very few problems with underinflated tires, says Bridgestone/Firestone. That means increased uptime, better fuel efficiency; longer tread life and improved retreadability – all of which can put real money back into a fleet’s pocket. Fleet Owner Online May 2001
  10. Many fleets are experiencing very good steer tire wear. But it doesn’t happen by luck. The successful ones check alignment, maintain proper inflation pressure and check kingpin, wheel bearing and tire rod end wear, all during regularly scheduled preventative maintenance. Goodyear – Tire Technology, 1996, pg 8
  11. What some [fleet managers] may forget, though, is how important true vehicle alignment is to maximizing tire mileage and fuel mileage as well. Goodyear – Tire Technology, 1996, pg 8
  12. Goodyear engineers have found that simply aligning tractor drive axles can extend steer and drive tire mileage by at least 25 percent. Goodyear – Tire Technology, 1996, pg 10
  13. Industry studies [have found that] keeping all tractor and trailer axles aligned can increase steer mileage, for instance, from the 75,000- to 100,000 mile range up to the 100,000- to 130,000 mile range. Goodyear – Tire Technology, 1996 pg 10
  14. Truck and trailer misalignment can affect fuel economy by 2 percent or more. Goodyear – Tire Technology, 1996 pg 10
  15. Results in terms of extended mileage more than overcome the extra steps. [Regular air pressure checks, tire rotation, and alignment checks]. Dan McNabb – Armellini Express Line, Inc.: taken from Commercial Tire Management – Winter 2000
  16. Fleets have doubled and even tripled tire mileage – The Maintenance Council – RP 642 – 5.6 Study Group Technical Presentation 1/2000
  17. A truck that is properly aligned handles better and is safer to drive. – The Maintenance Council – RP 642 – 5.6 Study Group Technical Presentation 1/2000
  18. A scheduled alignment program will produce an average 30 percent increase in tire mileage. – The Maintenance Council – RP 642 – 5.6 Study Group Technical Presentation 1/2000
  19. A scheduled alignment program will produce an average 2 percent increase in fuel economy. . – The Maintenance Council – RP 642 – 5.6 Study Group Technical Presentation 1/2000
  20. Fleets report that if they can increase their miles per gallon by even 1/10th (6.6 versus
    6.5 miles/gallon), the savings is about $85,000 per year (for a line-haul fleet of 100
    vehicles each traveling 120,000 miles per year). – Commercial FleetTire Digest 4/2008
  21. Keep all axles – drive and steer – properly aligned to minimize rolling resistance. Consider doing a full tractor trailer alignment if you are running a dedicated trailer. – Kenworth White Paper 8/2008