Understanding Tyre Labelling: What Do All Those Numbers Mean? - Tyre Advise in Lincoln
Understanding Tyre Labelling: What Do All Those Numbers Mean? - Tyre Advise in Lincoln
When choosing new tyres for your vehicle, it’s important to understand the information provided on the sidewall. Tyre labelling contains essential details about the tyre’s size, performance, and capabilities. At Andrews Car Centre in Lincoln, we know that tyre markings can be confusing, so this guide will break them down step by step, ensuring you can make an informed decision when it’s time for a replacement.
Breaking Down Tyre Markings
Let’s take an example of a typical tyre marking: 205/55 R16 91V.
1. Tyre Width (205)
The first number indicates the width of the tyre in millimetres, measured from sidewall to sidewall. In this example, the tyre is 205mm wide.
- Wider tyres offer better grip and stability, especially in performance cars.
- Narrower tyres are more fuel-efficient and often used in smaller vehicles.
2. Aspect Ratio (55)
The second number is the aspect ratio, which represents the height of the tyre’s sidewall as a percentage of its width. Here, the aspect ratio is 55% of 205mm, or 112.75mm.
- Lower aspect ratios (e.g., 40 or 45) are common in performance tyres, offering better handling but a firmer ride.
- Higher aspect ratios provide a more comfortable ride and are often found on family or commercial vehicles.
3. Tyre Construction (R)
The letter indicates the tyre’s construction. Most modern tyres are R, meaning radial construction. Radial tyres have layers of fabric arranged radially across the tyre, offering durability and a smoother ride.
4. Wheel Diameter (16)
This number represents the diameter of the wheel in inches. In this case, the tyre is designed to fit a 16-inch wheel. It’s crucial to choose a tyre that matches your wheel size for proper fitting.
5. Load Index (91)
The load index indicates the maximum weight the tyre can safely carry. In this example, a load index of 91 means the tyre can carry up to 615kg.
- Check your vehicle’s manual to ensure your tyres meet or exceed the recommended load index.
6. Speed Rating (V)
The final letter represents the tyre’s maximum safe speed capability. In this case, V indicates a maximum speed of 149 mph (240 km/h).
- Common speed ratings include:
- T: Up to 118 mph (190 km/h).
- H: Up to 130 mph (210 km/h).
- V: Up to 149 mph (240 km/h).
Choosing a tyre with the correct speed rating is vital for safety and performance, especially if you regularly drive at motorway speeds.
Additional Information on Tyre Sidewalls
In addition to the basic size and performance markings, your tyre’s sidewall may include other important details:
1. Tyre Manufacturer and Model
The brand (e.g., Michelin, Continental, or Yokohama) and model (e.g., Pilot Sport 4 or PremiumContact 6) are typically displayed prominently.
2. M+S Marking
Indicates the tyre is suitable for mud and snow conditions, though it’s not a guarantee of winter tyre performance.
3. Snowflake Symbol
Denotes a true winter tyre that meets rigorous testing standards for snow and ice performance.
4. Treadwear Indicators
Small raised bars in the tread grooves show when the tyre has reached its minimum legal tread depth of 1.6mm.
5. Manufacturing Date
The DOT code includes a four-digit number indicating the week and year of production. For example, 2023 means the tyre was made in the 20th week of 2023.
Why Understanding Tyre Labelling Matters
Selecting tyres that match your vehicle’s specifications ensures:
- Optimal Performance: Correct tyre sizing and ratings improve handling, braking, and ride comfort.
- Fuel Efficiency: Tyres with the right specifications reduce rolling resistance, saving you money on fuel.
- Safety Compliance: Staying within load and speed ratings minimizes the risk of blowouts or accidents.
- Longevity: Choosing tyres suited to your driving habits prolongs their lifespan.
Find the Right Tyres at Andrews Car Centre
At Andrews Car Centre in Lincoln, we offer a wide range of tyres to suit all vehicles and budgets. Whether you’re looking for budget tyres, mid-range tyres, or premium tyres from brands like Pirelli, Michelin, Goodyear, Yokohama, and Davanti, we have you covered.
Why Choose Us?
- Expert advice to help you choose the right tyres based on your driving habits and vehicle specifications.
- Professional fitting and balancing for optimal performance and safety.
- Competitive pricing and a selection of high-quality brands.
Book Your Tyre Fitting or Inspection Today
If you’re unsure about your tyre size or markings, visit us at Andrews Car Centre in Lincoln. Our experienced technicians can help you select, fit, and maintain the perfect tyres for your vehicle.
📞 Call us now or visit our website to book your tyre fitting appointment. Drive with confidence knowing your tyres are safe, efficient, and suited to your needs!