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Road Knight Tire Cost per Mile Calculator
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Easy version for fleet service managers. Change only blue cells.
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ROAD KNIGHT NET CPM
BENCHMARK NET CPM
SAVINGS PER MILE
ANNUAL FLEET SAVINGS
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$0.0045$0.0019-$0.0025($37,196.76)
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1) Fleet Profile (same assumptions for both tires)
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Number of trucks in fleet100100Used to annualize total savings
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Tire positions per truck1818Change if tractor-only or trailer-only analysis
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Annual miles per truck120,000120,000Miles driven per truck each year
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Average fleet MPG6.806.80Baseline operating MPG
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Fuel price per gallon$4.00$4.00Diesel price assumption
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2) Tire Inputs
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Road Knight
Benchmark Tire
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Purchase price per tire$236.80$255.00Invoice or target buy price
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Freight / duty / tax per tire--Leave 0 if already included
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Mounting + balancing per tire$25.00$25.00Shop labor + consumables
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Expected miles on new tire180,000165,000Miles before removal or retread
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Retread cycles (#)22Set 0 if no retreading
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Retread cost per cycle$140.00$150.00Per retread
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Expected miles per retread135,000125,000Miles from each retread
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Road calls / failure events per lifecycle0.20.30.2 = one event every 5 lifecycles
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Cost per road call / failure event$850.00$850.00Tow, service, delay, labor
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Casing credit / salvage value$25.00$15.00Residual value recovered
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Fuel economy change vs benchmark (%)-0.5%0.0%Negative = better fuel economy than benchmark
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3) Per-Tire Lifecycle Economics
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Total landed + install cost$261.80$280.00
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Total retread cost$280.00$300.00
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Expected failure / road call cost$170.00$238.00Road Knight CPM$0.0045
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Gross lifecycle cost before credits$711.80$818.00Benchmark CPM$0.0019
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Total lifecycle miles450,000415,000
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Net lifecycle cost after casing credit$686.80$803.00
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Base tire cost per mile$0.0015$0.0019
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4) Fuel Impact
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Baseline fuel cost per mile$0.5882$0.5882Fuel $/mile before tire effect
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Fuel impact per mile$0.0029$0.0000Negative input means savings
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Net tire cost per mile$0.0045$0.0019
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5) Annual Fleet Impact
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Annual fleet miles122122
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Annual tire-miles14,688,00014,688,000
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Annual tire spend$65,617.15$28,420.40
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Savings per tire-mile vs benchmark-$0.0025
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Annual fleet savings vs benchmark($37,196.76)
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