No, you don't always have to replace all four tires. In the UAE, the decision depends mainly on the tread depth difference, the type of driving (road vs. desert), and the vehicle (2WD vs. 4WD/AWD). For typical road driving on a 2WD sedan like a Toyota Camry, if the tires are less than 18 months old and the tread depth difference between the new and old tires is less than 2-3mm, replacing just the two on the same axle is often acceptable. However, for 4WD/AWD vehicles like a Nissan Patrol or for safe desert performance, a full set is strongly recommended to prevent damage to the drivetrain.
| Situation | Recommended Action in UAE | Key Reason |
|---|
| 2WD Sedan (e.g., Toyota Corolla) | Replace two tires on the same axle. | Cost-effective if tread wear is even and within limits. |
| 4WD/AWD SUV (e.g., Land Cruiser) | Replace all four tires. | Protects the central differential from stress and binding. |
| Severe wear on one tire only | Replace the single tire, shave it to match depth*, or replace axle pair. | *Shaving is a niche service to match tread depth for AWD systems. |
| Tires > 3-4 years old in UAE heat | Strongly consider replacing the full set. | Rubber compound degrades faster in sustained 40°C+ temperatures. |
- For Dubai-Abu Dhabi highway driving (25,000 km/year): The cost difference is significant. Replacing two tires (e.g., for a Hyundai Tucson) might cost ~1,000 AED, while a full set is ~2,000 AED. The RTA Dubai and MOI UAE both emphasize that minimum legal tread depth is 1.6mm, but for safety, especially in summer rain, replacing at 3mm is advised. A common practice for UAE fleet managers is to calculate cost per km, where rotating tires every 10,000 km can extend the life of a full set by up to 20%, making the total cost of ownership lower. I've seen sedans used for ride-hailing where the owner replaced only the front tires every 70,000 km and the rears every 140,000 km, but ride comfort and wet braking after year 3 were noticeably compromised.
