Car tyres what does all the information on the side of the tyre mean?
Markings are there to help you check that your tyres are right for your car. Together with your car hand book you can ensure the right tyres are fitted.
Your car tyres are the only part of your car that touches the road surface and therefore to hold the car safely on the road the right type and size of tyre is important.
So what does it all mean?
- 205 is the width of your tyre in millimetres
- 55 is the height of the tyre wall in mm
- R is the type of construction used to produce the tyre and stands for Radial which is the most common type of tyre.
- 16 is the diameter of your wheel in inches.
- 91 is the maximum weight allowed for that tyre. see chart below
- w is the maximum speed rating for that tyre
|Speed Rating||Speed (mph)||Speed (km/h)|
EU Tyre Label and Efficiency Classes
The European Union, under CE 1222/2009, has mandated that all tyres manufactured after the date of July 1 2012 for cars and commercial vehicles include standard EU Tyre Labels classifying them by three performance characteristics:fuel efficiency classified from A to G, wet gripclassified from A to G, and noise emission in decibels.
Categories of tyres unaffected by this regulation include: retreaded tyres, professional off-road tyres, racing/sports car tyres, as well as certain types of tyres designed to improve traction such as studded tyres, T-type temporary spare tyres, tyres for cars built before 1990, tyres with a maximum allowed speed of 80km/h, tyres for rims with a diameter less or equal to 254 mm or greater or equal to 635 mm.
This label is intended on one hand to promote economic and ecological efficiency in traffic, as well as increase road safety, and on the other hand to help consumers select appropriate tyres by ensuring a certain degree of product transparency.
Nevertheless, the label has been criticised for only showing a very limited number of characteristics. Professionals argue that tyres have many more features that are important and relevant to road safety, including but not limited to aquaplaning properties, driving stability, service life, product properties on wet and dry roads other than wet grip, properties on snow.
Tyre manufacturers suggest that the test results from various institutions and industry magazines should remain a very important source of information for the end consumer, because they focus on and rate a wide variety of tyre properties and feature