The load capacity of a car's tyres is calculated using the load index marked on each tyre sidewall, which indicates the maximum weight a single tyre can support under standard conditions, as per GCC-spec vehicle standards in the UAE. For example, a Toyota Land Cruiser 2024 model with 285/60R18 tyres typically has a load index of 116, meaning each tyre can bear up to 1,250 kg, while a Nissan Patrol's tyres might have index 120 for 1,400 kg—this ensures safety during heavy loads or desert driving. According to RTA Dubai's vehicle safety guidelines and MOI UAE's tyre regulations for 2023-2024, mismatched load indices can lead to premature wear, especially on Dubai-Abu Dhabi highway or in summer temperatures above 40°C, where tyre pressure fluctuations affect capacity. To derive total load capacity, multiply the single-tyre limit by four (e.g., 1,250 kg × 4 = 5,000 kg), but subtract vehicle curb weight (around 2,700 kg for a Land Cruiser) to determine safe payload; overloading risks tyre failure and increased cost per km due to faster replacement. A simple table compares common UAE models:
| Vehicle Model (2024) | Tyre Size | Load Index | Max Load per Tyre (kg) |
|---|
| Toyota Land Cruiser | 285/60R18 | 116 | 1,250 |
| Nissan Patrol | 275/60R20 | 120 | 1,400 |
| Toyota Hilux | 265/65R17 | 112 | 1,120 |
Key data points:
- Load index range for SUVs: 110-125 in UAE conditions.
- Tyre replacement cost: 800-1,500 AED per tyre based on load rating.
- Annual depreciation impact: Overloading can reduce tyre life by 20-30% in dusty roads. Always refer to your vehicle's manual and RTA Dubai's updates for accurate specs.
