The right tyre size.

1. Tyre width in mm
225 / 45 R 17 91 W
Car tyres have a tyre width of 125 mm to 335 mm. The tyres on your Golf V are between 195 mm and 225 mm wide.

2. Height-width ratio
225 / 45 R 17 91 W
How tall is the tyre in comparison to the width of its cross-section in %? The smaller the number, the lower the tyre sidewall. The height-width ratio of Golf V tyres is between 40% and 65%.

3. Tyre design type
225 / 45 R 17 91 W
The tyre carcass is made of fine cord fibres. R (radial tyre): The cords run at a right angle to the direction of travel. D (diagonal tyre): The cords run diagonally. Only one type of tyre design may be fitted. RF: Run-Flat tyre.

4. Rim diameter in inches
225 / 45 R 17 91 W
The distance from rim edge to rim edge is measured. Golf V tyres have a diameter of 15 inches to 18 inches.

5. Load-Index
225 / 45 R 17 91 W
Indicates the maximum tyre load in combination with its maximum speed. For example, at 91, a maximum load of 615kg per tyre is permitted - with the corresponding air pressure.

6. Speed index
225 / 45 R 17 91 W
The permitted maximum speed limit can be seen in combination with the load index. The load capacity of the tyres may sink at high speeds.

The right tyre width.

Better performance.

Wide tyres enable a better control over your Golf V, especially when it comes to braking and accelerating, as well as in tight bends, at high speeds and when changing lanes. Provided that the weather is on your side.

Greater contact surface. More grip?
On dry roads the answer is clear: Yes. The wider the contact surface, the more traction the tyres on your Golf V have. However, in heavy showers the exact opposite may occur, the keyword being "aquaplaning".

Warning, aquaplaning.
It's actually very logical: Wide tyres have to displace more water. So, the vehicle is quicker to start aquaplaning. Your wide-tyre Golf V could end up swerving quite a lot on rain-soaked roads - so always drive carefully.

Wider is louder.
Wide tyres have more profile grooves to prevent them from floating. As a result, they displace more air than narrow tyres when they roll away - and you can hear it.

Consumption increases with resistance.
Wide tyres have a greater rolling resistance. This means that they wear down more quickly. They also provide the airstream with a greater surface area to attack. The consequence: Your Golf V needs more power and therefore more fuel to keep it going.

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Golf 5 (1K).