Car Tyre Glossary

Tyre Size.

The correct tyre size for your vehicle can be found with regards to the manufacturer’s handbook. It is vital to understand the width of the tyre (i. e. 205), the depth of the sidewall of the tyre (i. e. 55), the overall tyre size (i. e. 17) and the tyre speed rating (i. e. ‘Z’ – please see below). read more

? The breadth of the tyre decides the amount of plastic that actually has contact with the road. Sports activitie cars tend to have wide tyres, such as ‘245’ to allow a greater amount of rubber to be in direct contact with the trail and therefore provide more grip, although family vehicles generally have narrower tyres, such as ‘205’.

? The sidewall more detail, which determines how ‘soft’ or ‘hard’ the ‘ride’ also needs to be borne at heart as it can mean the difference between a comfortable ride and an uneven ride. The deeper the sidewalls the softer the ride. Again sports autos tend to have relatively shallow sidewalls, such as ’45’ whilst family and more practical vehicles have a deeper sidewall, such as ’75’.

? The overall size of the tyre is literally the size of the wheels that they are fitted to. If you have seventeen inch wheels then you may have 17in tyres!

It should become borne in brain that by fitting greater, aftermarket wheels and tires some of the characteristics of the vehicle changes. For example, A car made to adopt 15in rims will probably likewise have suspension system and brakes suitable for 15in wheels. It will definitely have a speedometer that is calibrated for 15in wheels. So, if afterward you put a set of 17in wheels on the vehicle it will sit down higher off the surface, which may affect the highway handling capability of your vehicle. The speedometer will almost certainly become inaccurate anticipated to the tyre using a larger circumference.

Speed Score.

All vehicle tyres have a speed rating that is provided by the tyre manufacturer. The ranking dictates the maximum velocity that the tyres should travel at. For evident reasons this needs to be borne in head when choosing tyres for your vehicle.

Reinforced Tires.

These tyres have fortified sidewalls for added power and can therefore take care of excess fat. These tires tend to be taken on larger, heavier vehicles.


These tyres permit the vehicle to be motivated for a short distance (usually about 50 miles) at a low acceleration despite having no air in them following a puncture. Despite the name, once these tyres are punctured or otherwise broken they still need to be taken to a garage for inspection and repair in the same way as the air-filled tyre.

Original Equipment (OE).

This is actually the brand of the tyre that was built in by the maker. This kind of will also include the size and speed score as per the above and will differ with regards to the sort of vehicle and possibly its uses.

Space Vehicle Tyre.

These tyres are smaller than normal highway tyres and are designed to decrease the amount of space taken on by a normal spare tyre. Being a lot smaller means that they will take up less room in the boot of your vehicle. These tires will not take as much normal abuse as normal tyres so again should get replaced with proper road tyres as soon as possible.

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