The primary reason a steering wheel feels heavier after a tyre change in the UAE is incorrect tyre pressure, often due to the switch from worn to new tyres with higher rolling resistance. A difference as small as 0.2 bar from the manufacturer's specified pressure can be felt, especially in GCC-spec SUVs. For example, underinflating a Toyota Land Cruiser or Nissan Patrol to 28 psi instead of the recommended 35 psi for highway use increases the contact patch area by an estimated 15%, directly translating to heavier steering feel and a 3-5% increase in fuel consumption. According to the RTA Dubai, maintaining correct tyre pressure is a critical safety check during vehicle testing (based on 2023 vehicle inspection guidelines). Furthermore, the UAE Ministry of Energy and Infrastructure highlights that proper tyre inflation can improve fuel efficiency by up to 3% under local driving conditions (Summer 2023 awareness campaign). The total cost of ownership (TCO) impact is clear: if a vehicle's fuel economy drops from 7.5 km/l to 7.2 km/l due to this issue, and assuming an annual mileage of 25,000 km with Special 95 fuel at 3.00 AED/l, the annual fuel cost increases by approximately 347 AED. Regular checks at certified Adnoc or Enoc stations, especially before desert trips or during summer months when temperatures affect pressure, are essential.
- Primary Cause: Incorrect tyre pressure post-change (underinflation most common).
- Local Data Impact: Underinflation can reduce fuel efficiency by 3-5% in UAE conditions.
- Authority Reference: RTA Dubai inspection standards & UAE Ministry of Energy and Infrastructure fuel efficiency guidelines.
