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Your Report Card on Performance
The Importance of a Tire Management System
Unless you want to choose tires for your trucks based on "gut feelings," intuition, or data gathered by your peers, a good recordkeeping system to track tire performance and costs in your fleet is vital to making wise tire decisions.
Whether you keep records on paper or use tire-specific software, the key is to keep accurate records.
According to Tim Miller, Goodyear"s commercial tire marketing communications manager, a good record keeping system will store all the data you need to determine the actual costs associated with the tires in your fleet. "TMC (Technology and Maintenance Council) has a great Recommended Practice, RP 208, which details all the essential parameters to measure in order to accurately analyze tire related costs," Miller says. "It"s something we highly recommend fleets follow."
While most of the initial costs in a tire-tracking program are obvious -- new tires, casings and retreads, and repair materials -- there are other related costs that must be taken into account. Those include the labor associated with tire management and repairs, tire replacement costs, and the cost of downtime associated with tire issues that occur.
"Finally, warranty credits for new tires, retread, and repair warrantable conditions, must be documented and figured into the overall costs of tire related expenses," suggests Miller.
Paper Versus Computer Tracking
Miller says there is nothing wrong with keeping paper records of when tires were installed on a vehicle, when they were removed, and associated tire costs. "If you manage a handful of vehicles, paper records might work," he says. "But as the number of vehicles in a fleet increases, the complexity of keeping records ‘the old-fashioned way" becomes more difficult."
He adds, "You should be proficient in spreadsheet analysis that will record all the data and make the calculations you need to determine the total costs and, even more important, the cost per mile of every tire in your fleet."
If developing a complex spreadsheet is not in your skill set, you may wish to invest in software to help your cause. "There are several software packages available, some better than others," says Miller. "Goodyear offers two software products that can aid in the quest for better information – TVTRACK and TireValuCalc available at Goodyear dealers or at www.Goodyear.com/truck."
Information-Based Decision Making
Good tire-tracking software allows construction companies to document tire related information (mileage and cost) and calculate cost-per-mile in several ways. "With TVTRACK information is entered for each vehicle, with mileage recorded when new tires (or retreads) are installed," says Miller. "Down the road, costs associated with these tires are also documented -- tread wear is measured and entered into the program when tires are 25%, 50%, and 75% worn as well as when they have been removed from service."
Although cost-per-mile can be calculated and shown graphically at any time by brand or tire type, it is best to wait until tires are at least 50% worn to draw any preliminary conclusions.
"Better yet, wait until a significant number of tires are ‘out-of-service" before using the data to help make major purchase decisions," suggests Miller. "This gives you a more accurate picture of what"s happening with your costs."
Once tires are out of service, Miller suggests that data gathering continue through scrap tire analysis -- data that can also be captured through software.
"Knowing why tires are removed, and the age and number of retreads you are getting on casings, indicates whether your tires were properly maintained. For example, if tires are full of debris and failing when punctures occur, frequent yard clean-up or tire inspections -- or both -- might extend tire life in your fleet."
According to Miller, tire-tracking software is not intended to track every tire on every vehicle in a fleet. "It is intended to be a tool to aid in the tire decision-making process by providing a way to sample performance from a selected group of vehicles within the fleet," he says.
Another software tool offered by Goodyear is TireValuCalc, which calculates total costs associated with running different tire combinations. "For example, a fleet maintenance manager may want to know whether to run new tires or retreads on drive axles," Miller said. "Or they may want to see how off-highway tires perform versus tires that were designed for on/off highway use.
"TVC calculates the costs for each scenario as well as fuel costs. Fuel economy differences among various tire combinations and varying wear rates help determine which tires will deliver the overall lowest cost of operation."
Predicting Tire Costs with Information
Keeping good records and possessing data that predicts tire wear can help lower fleet costs. Knowing which tires are most cost-effective on a fleet"s trucks can assist future tire purchase decisions.
"What"s more, knowing the wear rates of tires, or how many months the tires last if in severe duty applications, allows you to anticipate ‘peaks and valleys" in the replacement tire purchase cycle," says Miller. "This could help with budget planning in the months and years ahead."
Putting Data to Work
Tire performance between different company locations or terminals can be tracked in the same way as performance on different fleet vehicles.
"Tracking software allows fleets to pinpoint problem areas or establish best practices based on outstanding performance in one or more locations," says Miller. "Information is power, and once you have data compiled, you can put it to work for you to make intelligent tire decisions.
"Our belief is that a well-run tire program transcends buying quality tires. Tires should be viewed as a system: tread and compounding, the casing, maintenance practices, and tracking to determine what works best. When your job is to stay profitable through low cost-per-mile, and tires are one of your highest operating costs, it"s imperative to track your numbers. It"s the only way to a solid bottom line."
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