š How to Read Tyre Sizes and What They Mean
- nuno saraiva
- 2 days ago
- 3 min read
Learn how to read tyre sizes and understand what each number and letter on your tyre means. Brugge Banden Mobiel explains it clearly so you can choose the right tyres for your car or van in West Flanders.

š Where to Find Your Tyre Size
Knowing your correct tyre size is essential for safety, comfort, and performance.You can find this information printed on the sidewall of the tyre ā thatās the outer edge of the tyre.
š Example: 205/55 R16 91V
This combination of numbers and letters tells you everything about the tyreās width, height, construction type, rim diameter, load index, and speed rating.
š What Each Part of the Tyre Size Means
Letās break down the example 205/55 R16 91V step by step:
205 ā Tyre Width (in millimetres)
(H3)This number shows the total width of the tyre, measured from one sidewall to the other.In this example, the tyre is 205 mm wide.š Wider tyres provide better grip but can increase fuel consumption slightly.
55 ā Aspect Ratio (Height as % of Width)
(H3)This number represents the ratio between the tyreās height and width.Here, the height is 55% of 205 mm, which equals about 112 mm.š A smaller aspect ratio means a lower profile tyre, improving stability but reducing comfort.
R ā Tyre Construction Type
(H3)The letter R means radial construction, which is the standard for modern tyres.š Radial tyres offer better durability, stability, and road contact.
16 ā Rim Diameter (in inches)
(H3)This shows the internal diameter of the tyre, which must match your wheel size.In this case, it fits a 16-inch rim.
91 ā Load Index
(H3)The load index indicates the maximum weight capacity per tyre.In this example, 91 = 615 kg per tyre.š Always check the manufacturerās load index table to confirm the exact value.
V ā Speed Rating
(H3)This letter indicates the maximum safe speed for the tyre.In this case, V = up to 240 km/h.š The tyreās speed rating must be equal to or higher than the one recommended in your vehicleās manual.
š Other Important Tyre Markings
Besides the size, youāll find other useful markings:
M+S: suitable for mud and snow (Mud + Snow).
3PMSF: symbol of a mountain with a snowflake ā approved for winter conditions.
DOT: manufacturing code showing week and year of production (e.g., DOT 2323 ā 23rd week of 2023).
OUTSIDE / INSIDE: indicates correct tyre mounting direction.
š§ How to Check Your Vehicleās Recommended Tyre Size
You can also find your vehicleās original tyre size:
In the ownerās manual.
On the driverās door frame label or fuel cap sticker.
On the manufacturerās website or by consulting a tyre specialist.
š Using incorrect tyre sizes can affect stability, braking, fuel efficiency, and even ABS or ESP systems.
š Brugge Banden Mobiel ā Your Tyre Specialist in West Flanders
At Brugge Banden Mobiel, we help you identify the correct tyre size and choose the best options for your vehicle.We work with leading brands like PointS, Michelin, Goodyear, Yokohama, Vredestein, and Apollo, offering professional mobile tyre fitting throughout Bruges and West Flanders.
š 0498 60 05 76āļø bandenmobiel@gmail.comš www.bruggebandenmobiel.be




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