How to Read Tyre Size Numbers and DOT Manufacturing Date Codes in UAE

When booking a mobile tyre replacement in Dubai, the first question our technician will ask is: "What is your exact tyre size?" Knowing how to read the alphanumeric markings molded onto your tyre sidewall ensures you receive the exact manufacturer-specified tyres for your vehicle.

Anatomy of a Tyre Size: 255/50 R19 Explained

Let's take a standard SUV tyre size example: 255 / 50 R 19:

Understanding Load Index & High-Speed Ratings (W, Y, (Y))

Directly following the dimensions, you will find a number and letter such as 107Y:

• Load Index (e.g. 107): Numerical code representing maximum load carrying capacity per tyre (107 = 975 kg per wheel). Heavy electric vehicles (Tesla, Porsche Taycan) and large SUVs (Nissan Patrol, Land Cruiser) require High Load (XL / Extra Load) designations.
• Speed Rating (e.g. Y): Maximum safe sustained velocity rating:
  • V = Up to 240 km/h
  • W = Up to 270 km/h
  • Y = Up to 300 km/h
  • (Y) = Exceeding 300 km/h (Supercar homologation)

Decoding the 4-Digit DOT Production Date Stamp

Always inspect the oval badge stamped near the bead with 4 numbers:

Example: DOT ... 4825 means the tyre was manufactured in Week 48 of 2025 (late November 2025). Never accept tyres in the UAE that have been sitting in unconditioned warehouse storage for more than 18–24 months.