Mixing tyres with different speed ratings might seem harmless, but it can seriously affect handling and safety on the road. This article explains what V and W ratings mean, why consistency matters, and how to choose replacement tyres that keep your vehicle stable and compliant.
If you’ve ever had to change a tyre before, then you will already be at last marginally familiar with the tyre size calculation and the various rating and insights that can be gleaned from this calculation.
The tyre size calculation can be seen on the sidewall of the tyre, and is comprised of a series of letters, numbers, and symbols which are embossed on the rubber. Knowing what each symbol, letter, and number means allows you to identify and select the right replacement tyres to suit your needs.
In this article, we’re looking specifically at a standalone letter that denotes the speed rating of your tyre.
What Do V and W Mean With Regards to New Tyres?
If you see a V or W on your tyre, then this provides you with information about the speed rating of the tyre.
In other words, the letter that you see printed on your tyre sidewall lets you know the maximum speed that the tyre can safely be driven at.
Now, it’s worth noting here that this is not a challenge. The fact that a tyre is rated to safely drive up to 149mph does not mean that you should drive at that speed. Rather, it means that the tyre will safely rotate up to that speed if necessary.
V is a slightly lower rating than W. V commonly means that the tyre is suitable and safe up to 149mph, while a W rating means the tyre is safe up to 168mph.
Why Do Different Speed Ratings Matter?
When it comes to establishing the right speed rating for your tyres, it isn’t just about the speed at which the vehicle can safely travel. It’s also about the handling of the vehicle at speed, and how well equipped the tyres are to deal with the cornering, acceleration, braking, and general control over a vehicle travelling at that speed.
