Reading Your Tyre Sizes

Reading Your Tyre Sizes-How to Read a Tyre Size & Understanding a Tyre Sidewall –

Reading Your Tyre Sizes

Reading Your Tyre Sizes

This video is brought to you by Toyo Tyres. Of course I fell out with Toyo a couple of years ago. However, I still sell Toyo tyres through a third party tyre broker. Of course, whatever business you are in you “never cut your nose to spite your face”. Understanding the letters and numbers on your tyre sidewall can be a bit confusing. Tak. one of Toyo Tyres technicians,gives you an insight. Thus about how to read a tyre size.As a result, Taks simple explanation addresses all the different specifications. hence, that are written on your vehicles tyre. Of course, the sidewall also contains a couple of key features:

  • Tak looks at Tyre Size 255/35/R18 109V
  • The “255” in the first part of the tyre size represents the section width of the tyre.
  • The “35” represents the tyres aspect ratio or height.
  • The “R” stand for Radial in tyre construction
  • The “18” stands for the wheel diameter in inches.
  • The “109” is the load index and represents the tyres maximum load capacity at maximum inflation pressure.
  • The “V” represents the speed rating which is the max allotted speed of a tyre.

For those looking to get some advance knowledge about all the information a tyre can present there is the DOT tire identification number (TIN).

An example of a TIN would be DOT CX91 XX31309

  • The “CX” represents the factory code or where the tyre was manufactured.
  • The “91” represents the size code.
  • The “XX3” represents the options code. The last four digits on the TIN represent the week and year when the tyre was made.

So for instance “1309” means the 13th week in the year 2009.

Reading Your Tyre Sizes

Another piece of information. Naturally, contained on a tyre sidewall is the maximum load capacity. The max load displays a weight at a certain PSI. But this is not the recommended tyre pressure that you should inflate your tires to. Instead follow the manufacturer recommended tire pressure setting as seen on the inside of a car’s door jam.

Hopefully this video can give you some insight on how to read a car tyre.

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