Car Tyre Code Meaning

The digits 225 refer to the section width in mm when the tyre is fitted to the recommended rim inflated to the recommended pressure before its under load when attached to a car. The code CSR ContiSupportRing can still be found on older Continental tyres but this has been replaced by the new technology for self-supporting run flat tyres with the code SSR Self Supporting Runflat.

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A chart denoting tire speed rating codes is an essential reference when buying new wheels for your automobile.

. Choosing tires with the right speed rating ensures proper handling and smooth car functioning. Lets say that code reads as follows. The sidewall of typical tyre is.

The letter is usually at the end of the size description along with the load range B C or D. Manufacturers use different codes to mark their run flat tyres. For example if a tyre has got a S rating then it can reach a maximum speed of 180 kmhAs with the load index each letter corresponds to an equivalent in Read more about tyre speed rating.

16a Reinforced is an alternative marking to Extra Load. What does H and T mean on tires. T the tire is temporary spare.

An ECE code is proof that the tyre has passed European safety standards - as its possible that some non-EUUK-made tyres are not manufactured to the same safety standards. Tyre code has a great significance since the code on the sidewall determines the feature of the tyre and a portion of its key restrictions for example speed limit and load-bearing capacity. What is Aspect Ratio of car tyres.

C in Euro-metric sizes this means the tire is commercial for delivery vans and trucks. It indicates the maximum load a tyre can safely carry when driving at the maximum speed permitted. The tyres rim diameter is measured in inches taken from the wheel flange where the tyre is seated bead seat area to the same point on the opposite side.

But most importantly the code is decisive in terms of compatibility with your vehicle. You cant just buy any tyre that would be ridiculously futuristic right. Denotes higher load capacity than standard tyre.

In addition to the C designation these sizes are also branded with a load range and service description rating load range B C or D. In the example the height of the tyres sidewall is 40 of the tyres section width or 245 x 40 98mm. The HT on tires stands for highwayterrain.

In addition to the three ratings every tyre has letters and numbers embossed on them which provide enough information for you to choose the right one for your car and needs. P-metric method of tire sizing. 95H is a symbol indicating the maximum load capacity and speed at which the tyre can be safely operated subject to the tyre being in sound condition correctly fitted and with recommended inflation pressures 95 represents a maximum load of 690kg per tyre.

Tyre markings explained. Here we explain what it all means using the code for one of the tyre types weve tested as an example. This is a ratio between the height and width of the tyre expressed as a percentage and is called the Aspect Ratio of the tyre.

P stands for passenger vehicle tire. It tells you who manufactured the tire where it was made and other. The markings represent a tyres width sidewall height diameter profile load index and speed rating.

R indicates the tyre is manufactured with a radial ply construction. Each of these digitsletters represents something different and provides important information. On each tyre you will usually find a series of numbers and letters that look something like this.

H represents a maximum speed of 210kmh. E11 means the tyre is approved in the UK. This symbol indicates the tire manufacturers compliance with the US.

The second number of the car tyre size after the slash is 65. Department of Transportation DOT National Highway Traffic Safety Administration NHTSA safety standards. 10 rows You will also notice a separate code mandated by the DOT.

V Speed Rating - It is the maximum speed that the car can maintain with the given tyres and is denoted by English Alphabets. So in our example 205mm is the width of the tyre and. A T speed rated tire is tested up to 118mph while H is tested up to 130mph.

LT stands for Light Truck ST is. To find your tires age you need to locate the DOT Date Code on the tire. These are the tires that can be used until the repair or replacement of the main tire is done.

What Is Tire DOT Date Code. Heres what those numbers and indicators on the sidewall indicate and how to understand them. For example a tyre with a load index of 91 may be subject to a maximum load of 615 kg.

The codes on the sides of tires are unfamiliar to most car and truck owners but knowing what the codes mean is important to choosing the proper tires. Youll either need to stick to the exact size the car comes with or upgrade to. It is absolutely forbidden to use tyres with a lower load index than the one recommended for a particular car model.

Improper matching of the load index to the weight of a loaded vehicle if the vehicle weight exceeds the value of the tire speed index may result in rapid loss of tire performance and may even result in the tire exploding. What is tire load index. When it comes to how to read tyre size the first five digits of the code are the ones to concentrate on.

Next have a tire professional help you determine a tire size range that will fit your vehicle and driving needs. If there is a P on the sidewall it stands for passenger car This refers to the US. TIRE TYPE The first letter in the code tells you what class of tire it is.

The writing on your tyres can be confusing. C Commercial Example. 17 TWI-Tread Wear Indicators- raised areas at the base of the tread grooves to serve as a visual warning of when the tyre is.

Tire Load Index is a number that corresponds to the load a tire can carry at its maximum internal air pressure. Aspect ratio can be defined as the height H of the tyre divided by the width W and then multiplied by 100. 31x1050R15 C 109R Euro-Metric tire sizes ending with a C are commercial tires for use on delivery trucks and vans capable of carrying heavy loads.

P-class tires include cars SUVs. Tire Speed Rating Codes. ST the tire is a special trailer tire used on utility car and boat trailers.

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