The fourth and fifth digits of the tyre code that immediately follow the tyre width. The aspect ratio or profile height of the tyre sidewall is expressed as a percentage of the tyre width. The next two digits represent the size of the wheel rim that the tyre can be fitted to.
It is also the diameter of the tyre from bead to bead. So a tyre marked 16 will fit on a inch wheel rim. The speed rating of a tyre is represented by a letter of the alphabet at the end of the tyre size code and indicates the maximum speed capability of the tyre.
Tyres receive a speed rating based on a series of tests which measure the tyres capability to handle a set speed for a prolonged period of time. If you are unsure what speed rating you need, be sure to check your vehicle handbook. Choosing a lower speed rating than that recommended by your vehicle manufacturer could potentially invalidate your insurance. Cookies and your privacy Our website uses cookies to place bookings and help us provide a better service.
Main Menu. Servicing Information What service do I need? Why service your car? What's included in my service? Other Products Join Kwik Fit Club today and combine your regular vehicle maintenance costs into a simple monthly subscription. Home Blog. How to Save Fuel When Driving There are a number of ways that you can save fuel while driving, including accelerating and braking slowly and smoothly, keeping to speed limits and ensuring your tyre pressure is correct for your tyres.
Friday 30th April Technology Tuesday: Does the aircon really waste fuel? Image courtesy of www. Share this article:. Does the aircon really waste fuel? Close this module.
TheMotorist Newsletter Don't miss more content like this!! Other ways to improve fuel consumption Looking for more ways to improve your fuel consumption? As well as following the above guidelines when it comes to using your air conditioning and opening your windows, some other tips to improve fuel efficiency include: Driving style - the way you drive your vehicle can have a huge impact on your fuel efficiency.
It's recommended to gently accelerate and use the highest safe gear to likely use less fuel - as harsh acceleration and frequent use of gears decreases fuel efficiency. Tyre pressure - are your tyres inflated to the correct pressure? If underinflated, there will be a larger surface area contacting the road - which leads to an increase in drag on the wheel.
For over fifty years, Which? And that's precisely the thinking that we've brought to helping you find a range of local traders you can rely on. Every single trader appearing in this directory has been through our vetting process. And that means.
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