A puncture never costs you a tyre. It costs you a vehicle-day, and your tyre is the cheapest item on the incident sheet.
Most fleet tyre management reporting tracks tyre cost per km: the casing and its repairs, spread over the kilometres it covered. Useful number. But it sits in one column while the real damage lands in four others: the vehicle’s lost day, the driver’s hours, the callout invoice, the penalty on the late load. Fleet tyres in South Africa don’t fail on averages, they fail on specific corridors, and yours are already in your incident log. This post is a worksheet for pricing downtime from your own routes, with numbers you already have, and a way to run a trial your finance director can’t pick holes in.
We are Rev Tyre Tech, a family business run by Edwin and Micheline Petersen from Unit 23 Sildale Park, Silverton, Pretoria. Six years trading, more than 7,800 tyres treated. What we sell turns up near the end of this post. The worksheet works whether you ever talk to us or not.
What does a tyre puncture actually cost a fleet?
A puncture costs a fleet a vehicle-day, not a tyre. The repair itself is the cheapest line on the incident: the real cost is the vehicle standing, the driver’s paid hours going nowhere, the callout fee, and any penalty on a missed delivery window. Price those four and your tyre almost disappears.
Walk through one incident from your own log. The driver calls it in from the shoulder. The vehicle stands, and the driver is paid to stand with it. A callout truck works its way out from the nearest town; if the casing is past a roadside repair, a tow follows. Somewhere behind all of it, a delivery window closes.
Then the strange part. The casing gets plugged and goes back into rotation, tyre cost per km barely twitches, and the month’s tyre report looks clean. The vehicle-day is gone, but it died in a different department’s numbers. That gap is why truck tyre punctures keep being treated as small events: the column that records them is not the column that pays for them.
How do you calculate downtime cost per vehicle?
Take four numbers from your own books: the vehicle’s day-rate, the driver’s cost for the hours lost, the callout or tow fee, and the missed-SLA penalty if the load was on a service agreement. Add them up per incident, multiply by incidents per month, and you have a downtime cost no template handed you.
The four inputs, one at a time:
- Vehicle day-rate. Call it D: what the vehicle earns on a working day, or what a replacement costs to hire. Your rate card already has it.
- Driver hours. Call the driver’s hourly cost W and the hours lost h. Your callout log has the times: first call to wheels rolling again.
- Callout cost. Call it C: the roadside invoice, plus the tow when the casing is past fixing on the shoulder.
- Missed-SLA penalty. Call it P. Zero on some loads. On contract work it’s written into the agreement, so read it out of the agreement.
One incident on one vehicle:
D + (W × h) + C + P
Now pull last quarter’s job cards for a single route and count the puncture incidents. Call the monthly average N. That route’s downtime bill is N × (D + (W × h) + C + P) per month. Use your own numbers for every letter. The point of the exercise is that they come out of your rate card, your payroll, your roadside invoices and your own SLA. Not out of a blog post.
The arithmetic is the same for a bakkie doing metro drops and a rigid on linehaul. Truck tyre punctures just carry a bigger D and, usually, a bigger P.
Put the result next to tyre cost per km for the same route. On most routes your tyre column is the small one. That comparison, on one page, is the whole argument.
Why start with your worst route?
Because a result on your ugliest corridor is a result nobody upstairs can argue with. If prevention works on the route that ruins the most tyres and misses the most windows, the decision to roll it out wider makes itself. Nobody has to defend a projection; the worst route already ran the trial.
Pilots die when they run on friendly ground. Trial anything on your easiest metro route and a sceptic can say the route was easy, and they’d be right. Run it where the incident log is ugliest and there is nothing left to argue. Either the number moved or it didn’t.
That is the blameless version of the decision. No one stakes their name on a forecast; the person who signs off is approving a result, not a promise. Finding the route takes minutes. Sort last quarter’s incidents by corridor. The one at the top has been paying for this worksheet all along.
What prevention changes, and what it doesn’t
Our treatment is a Nano Polymer coating applied to the inside of your tyre’s tread, the crown. It cures and bonds to the inner wall; it is not a liquid sloshing around in your tyre. Edwin manufactured a liquid tyre sealant for sixteen years before developing the coating and moving off his own liquid product. Because it bonds and is applied evenly, wheel balancing is unaffected, which matters at linehaul speed. In the tread, it seals as it happens, and in most cases you can keep rolling to somewhere safe.
Now the other half, at the same volume. The coating does nothing for sidewalls. Nothing for the bead. Nothing for impact or pothole damage that breaks your tyre’s structure, and nothing for damage that was in the casing before we treated it. A treated tyre is not indestructible, and we won’t tell your operations manager it is.
One more honest line: we don’t do mobile fitment. Vehicles come to us in Silverton, by appointment, and treatment takes one morning per vehicle. All five tyres are done; the spare is included in the job. For a working vehicle that transit day is a real cost, so put it in the pilot worksheet next to D, where it belongs. If your routes cross the border, we also have a branch in Gaborone, Botswana.
Treated tyres carry The 1.6 Guarantee: five years, or until the tread wears down to 1.6mm, whichever comes first. The exclusions are printed above the coverage on the guarantee page. Read them in that order. It’s how we’d want to be sold to.
The 90-day worst-route pilot
Take the worst route the log gave you and treat the vehicles that run it, one morning each at Silverton, booked through the fleet enquiry form. Then run 90 days and document everything per casing:
- The DOT date off each tyre. The code’s last four digits are the week and year of manufacture, so the record shows how old every casing was going in.
- Tread depth at fitment, per wheel position.
- Every incident on the route, in the same log you used to pick it.
- The four worksheet inputs for any incident that still happens.
At day 90 you have a before-and-after on your hardest corridor, per casing, in your own records. If the downtime number moved, the rollout decision writes itself, route by route. If it didn’t, you’re out the treatment cost and the transit days, and you own the cleanest tyre file in the company. Either way, you priced the decision from your own routes, which is where fleet tyre management in South Africa should have been priced all along.
Six years of trading and a 4.9-star Google rating say we’ll still be here at day 90 to go through that file with you.
Talk to the fleet team
Fleet work runs through our corporate team, not the retail WhatsApp line. Use the enquiry form on the fleet page and tell us the route and how many vehicles run it; paste in what the incident log has been doing if you have it to hand. If you want the worksheet argument stress-tested before anything goes upstairs, say so on the form. That’s a conversation we’re glad to have.