Mauritania Tyre Rules 2026: 1.6 mm Across the Sahara

Most of Mauritania is Sahara, and the nearest thing to a seasonal hazard is the wind. There is no winter tyre window, no marking requirement and no stud category.

The tread floor is 1.6 mm in the main grooves, the international reference set out in Council Directive 89/459/EEC. What decides whether a tyre survives here is sand, heat and distance, in that order.

Tyre Law Summary for Mauritania

Sand on tarmac

The hazard that catches people is not deep desert driving. It is a drift of wind-blown sand lying across a sealed road, often only a few centimetres deep, hit at speed on a route that has been clear for an hour.

The vehicle behaves as it would on loose gravel: the front washes out, and correcting sharply is worse than not correcting at all. The coastal road between Nouadhibou and Nouakchott is where this is most common, because the wind comes off the Atlantic and the dunes run down to the road.

Read the surface ahead, slow before the drift rather than on it, and hold a straight line through it.

Distance is the second hazard

Beyond the two main corridors, the gaps between fuel, water and any prospect of tyre repair run to hundreds of kilometres. That changes the maths on everything:

• Two full-size spares rather than one, with the tools and the practice to fit them.
• Replacement nearer 3 mm, because a tyre that fails out here is not an inconvenience.
• Pressures set cold, at dawn, from the door sticker — Saharan heat lifts the running figure far above it by midday.

On soft sand, dropping 0.2 to 0.3 bar helps traction. Putting it back before you return to hot tarmac is not optional, because an under-inflated tyre at speed on a hot road is the classic route to a sidewall failure.

Four borders

• Western Sahara, administered by Morocco, to the north-west. This is the Atlantic route north, through the Guerguerat crossing towards Morocco — no winter tyre season on either side.
• Algeria: to the north-east, across open desert. No winter tyre season; tread floor 1.6 mm.
• Mali: to the east and south-east. No winter tyre season; tread floor 1.6 mm.
• Senegal: to the south along the Senegal River, with the main crossing at Rosso. No winter tyre season; tread floor 1.6 mm.

For speed limits, licence requirements and equipment rules, see the Driving in Mauritania guide.