Tyre Cost per Mile Off Road Tyres: The Method, a Worked Example, and the Factors That Matter

Tyre cost per mile off road tyres is a question about value, not about price alone, and the only way to answer it honestly is to divide the price by the miles the tyre is expected to last. A cheap tyre that wears out quickly can cost more per mile than a dearer tyre that lasts, and a dearer tyre that lasts no longer costs more per mile than the cheap one. This page gives you the method, a worked example with every assumption stated, and a table you can use to look up the cost per mile at three prices and three mileages. All prices and mileages in the examples are labelled as examples, because real prices change and real mileage depends on the car, the roads and the driver.

Off-road tyres are built for grip on loose surfaces rather than for long life on tarmac, and that purpose changes how cost per mile should be read. A deep, aggressive tread that bites into mud or gravel wears faster on a hard road, so a tyre that spends most of its miles on tarmac will usually show a higher cost per mile than a road tyre of the same size, even if it is doing exactly the job it was designed for. Judging it only on cost per mile, without the job in mind, misses the point.

The cost-per-mile formula — tyre cost per mile off road tyres

For tyre cost per mile off road tyres, the point is this: The formula is cost per mile equals tyre price divided by expected mileage. For a set of four, divide the price of all four by the total miles, which gives the same answer as working out one tyre and multiplying by four. The formula looks trivial, and it is, but the discipline is in the inputs: the price must be the price you actually pay, and the mileage must be an estimate you are willing to defend, stated openly rather than hidden. A cost per mile quoted without its price and mileage is a number without a meaning, and it should not be used to compare tyres.

What this type of tyre does to the cost per mile — tyre cost per mile off road tyres

The mileage figure is the hardest part to get right. Off-road driving is rough on tread: sharp stones cut and chip the rubber, low pressures on sand or mud flex the carcass, and heavy loads on uneven ground wear the shoulders. A driver who uses the tyres mostly off-road should assume a shorter life than a driver who uses the same tyres mostly on the road, and the table on this page lets you see how the cost per mile changes as that assumption moves.

Worked example — tyre cost per mile off road tyres

Take a tyre that costs £145 as an example price, with an assumed mileage of 30,000 miles. The cost per mile is £145 divided by 30,000 miles, which is £0.0048 per mile, or 0.48p per mile. A set of four at the same example price costs £580, and over the same 30,000 miles the set costs 1.93p per mile for all four tyres together. Over 12,000 miles a year, one tyre at this cost per mile would cost £58.00 in tyre wear for the year, and a set of four would cost £232.00. Change the price or the mileage and the answer moves with it, which is exactly what the table below shows. That is the point this page works through for tyre cost per mile off road tyres.

Tyre price (example) 20,000 miles 30,000 miles 40,000 miles
£110 0.55p 0.37p 0.28p
£145 0.72p 0.48p 0.36p
£180 0.90p 0.60p 0.45p

On this page, tyre cost per mile off road tyres is the case in point: The table uses example prices only. Read across a row to see how the cost per mile falls as the assumed mileage rises, and read down a column to see how it rises with the price. The comparison is only valid within a column, because each column holds the mileage constant.

What changes the cost per mile — tyre cost per mile off road tyres

What saves money with off-road tyres is not buying the cheapest set but looking after the set you have. Correct pressures for the surface, regular rotation, and a check for cuts and embedded stones after a rough trip all extend the miles in the formula. A tyre taken off the road with a stone still lodged in the tread can fail early, and that failure is a cost the formula never sees coming.

  • Taking tyre cost per mile off road tyres as the case in point: Purchase price: the starting point of the calculation, and the only part that is fixed at the till.
  • Expected mileage: the divisor, and the part that varies most — it depends on driving, pressure, alignment, load and road surface. That is the point this page works through for tyre cost per mile off road tyres.
  • On this page, tyre cost per mile off road tyres is the case in point: Driving style: hard acceleration and braking wear tread faster and push the cost per mile up.
  • Taking tyre cost per mile off road tyres as the case in point: Tyre pressure: under-inflated tyres wear their shoulders and can lose thousands of miles of life.
  • Alignment: a car that scrubs its tyres on one edge wastes tread that should have been miles. That is the point this page works through for tyre cost per mile off road tyres.
  • Load: a heavily loaded car, or one that tows, wears its tyres faster than the same car running light. That is the point this page works through for tyre cost per mile off road tyres.

Common mistakes — tyre cost per mile off road tyres

  • On this page, tyre cost per mile off road tyres is the case in point: Comparing two tyres using different assumed mileages, so the cheaper result is an artefact of the assumptions rather than the tyres.
  • For tyre cost per mile off road tyres, the point is this: Quoting a tyre's mileage as a fact, when it is an estimate that depends on the car, the roads and the driver.
  • On this page, tyre cost per mile off road tyres is the case in point: Forgetting that a set of four costs four times one tyre, and dividing the single-tyre price by the mileage of the set.
  • For tyre cost per mile off road tyres, the point is this: Leaving fitting and balancing out of one tyre's figure and including them in another's, so the comparison is not like-for-like.

How to compare two tyres on cost per mile — tyre cost per mile off road tyres

Work out each tyre's cost per mile with the same assumed mileage, using the price you were actually quoted for each one. Then test the sensitivity: what happens if the dearer tyre lasts 25 percent longer, and what happens if it lasts no longer at all? If the dearer tyre only wins when you assume a much longer life, ask whether that longer life is plausible for your car and your driving. Check the label ratings for wet grip, fuel efficiency and noise at the same time, because the cheapest tyre per mile is not automatically the best tyre for the car. Finally, remember that fitting, balancing and disposal are real costs too — include them in both tyres' figures or in neither, but never in only one. That is the point this page works through for tyre cost per mile off road tyres.

Related calculations — tyre cost per mile off road tyres

Frequently asked questions

How do I work out the cost per mile of a tyre?

Divide the price of the tyre by the number of miles you expect it to last. For example, a tyre that costs £120 as an example price and lasts 30,000 miles as an assumed mileage costs 0.40p per mile. For a set of four, divide the price of all four by the total miles, or work out one tyre and multiply by four. Always state the price and the mileage you assumed, because the answer changes with both. That is the point this page works through for tyre cost per mile off road tyres.

What mileage should I assume for a tyre?

There is no fixed figure, because mileage depends on the tyre, the car, the roads, the pressures and how the car is driven. Use a range rather than a single number — the table on this page shows three mileages — and pick the one that matches your driving. A tyre's real-world mileage is never a fact you can quote; it is an estimate that the method tests. That is the point this page works through for tyre cost per mile off road tyres.

Is a more expensive tyre cheaper per mile?

On this page, tyre cost per mile off road tyres is the case in point: It can be, if it lasts long enough to make up the higher price. Divide each tyre's price by the same assumed mileage and compare the results directly. A dearer tyre that lasts half as long again can cost less per mile than a cheap tyre that wears out early, while a dearer tyre that lasts no longer costs more per mile.

Does the cost per mile include fitting?

Taking tyre cost per mile off road tyres as the case in point: The simple formula uses the tyre price alone, so fitting, balancing and any valves or disposal charges are not in it. If you want a fuller figure, add the fitting cost to the tyre price before dividing by the mileage, and say that you have done so. Comparing a fitted price with an unfitted price will give a misleading answer.

For tyre cost per mile off road tyres, why do two identical tyres cost different amounts per mile?

For tyre cost per mile off road tyres, the point is this: Because the mileage is different. Pressure, alignment, load, road surface and driving style all change how long a tyre lasts, and the same tyre on two cars can wear at very different rates. That is why the cost per mile is a method with stated assumptions, not a property of the tyre itself.