Gravel roads and gate times
A reserve day in a hire car is governed by two things nobody mentions at the counter: the hour the gate opens and the sentence in your contract about dirt roads. Get both wrong and you are either sitting outside a closed gate or paying for a sump.
Updated 15 October 2026Mbombela

Gate times set the whole day
Entrance gates on the big reserve east of Mbombela open at half past five in the height of summer and six in the depths of winter, and they close between half past five and half past six depending on the month. Camp gates inside run on a slightly tighter clock than the entrance gates. Those hours are enforced, and the fine for a late arrival at a camp is real. If you want to be at Numbi or Phabeni for the opening, you are leaving Mbombela between four and half past four in the dark.
That has consequences for a hire. An after-hours collection the previous evening costs R300 to R450 at most counters, but it is the only way to have the car at your guesthouse at four in the morning. The alternative, collecting at eight and driving in, means you reach the good sightings after the animals have gone quiet. We would pay the after-hours fee every time, and we would also tell the counter the plan so that the deposit hold and the paperwork are done the night before rather than at dawn.
The gravel clause in your contract
The clause usually reads something like: the vehicle may not be driven on any road other than a tarred public road or a gravel road maintained by a public authority. It sounds permissive. In practice it means the main gravel inside the reserve is fine, the district road to a farm gate is arguable, and the two-track through a private concession is not. Damage caused on an excluded road voids the waiver, which puts the full excess back on your card.
There is a second sentence worth finding, about underbody and undercarriage damage. It is excluded almost universally, gravel or no gravel. A rock through a plastic engine undertray on a low crossover is R4 000 to R7 500, and if it takes a coolant pipe with it the recovery from inside a reserve adds a four-figure number on its own. We have seen that bill twice. Both times the driver had been told the road was fine, and it was. The rock was not.
Tyre pressure in Lowveld heat
Set pressures cold, at the forecourt in Mbombela, before the sun is properly up. The plate in the driver's door frame gives you the fully laden figure, which is what you want with four people and a cooler box. On gravel, dropping about twenty kilopascals from the laden tar figure softens the ride and reduces the chance of a sidewall cut, and you put it back before you rejoin the tar at speed.
Then leave the pressures alone when they read high at midday. Forty degrees of ambient heat and two hours of driving will add thirty to forty kilopascals, and that is normal thermal expansion, not overinflation. Bleeding air out of a hot tyre leaves you underinflated when it cools, which is how people ruin sidewalls on the way home. Check the spare before you leave the counter too, including whether it is a full-size wheel or one of those temporary units limited to eighty kilometres an hour, because the difference matters a great deal ninety kilometres from a town.
Ground clearance and what it buys you
One hundred and fifty millimetres of clearance will get you along maintained reserve gravel in the dry without drama. One hundred and eighty gives you the corrugated sections and the drainage humps without flinching. Two hundred and ten, which is roughly a double-cab bakkie, means you stop thinking about it. Nobody needs a locking differential for a self-drive day, and four-wheel drive is mostly irrelevant until it rains hard enough that you should not be out there anyway.
What you do want is sidewall. A sixty-five-section tyre on a sixteen-inch rim is far happier on corrugation than a forty-five on a nineteen, and it will cost a third as much to replace. When a counter offers an upgrade to a smarter-looking version of the same car, look at the wheels before you accept. Bigger rims on gravel are a tax you pay later.
Coming back dusty
Red Lowveld dust gets everywhere and no counter seriously expects a car back showroom clean after a reserve day. What they do charge for is a cleaning fee when the interior has to be stripped, typically R350 to R650, and that is usually earned by a spilled cooler box or sand ground into carpet by children's shoes. A R40 car wash at the filling station on the way back pays for itself in goodwill alone.
Do walk the car with the clerk and point out the stone chips yourself. Dust hides a chipped windscreen and a scratch down a door, and if the chip appears a week later on somebody else's inspection it becomes your argument to lose. Photograph the car at the drop-off point with the time showing, get a signed return slip rather than a verbal all clear, and keep that slip until the deposit hold has fallen off your card, which takes five to fourteen working days.
Three things to carry with you
- 01Gate opening between half past five and six decides your collection time, not the other way round.
- 02Underbody damage sits outside almost every waiver, on gravel or on tar.
- 03Set pressures cold, drop about twenty kilopascals for gravel, and never bleed a hot tyre.
Read on

Send us the contract before you sign it
Five minutes of reading at this desk has saved readers five-figure excess claims more than once. Tell us the car class, the dates, the route and the counter, and we will come back with the figures that matter.