How old are my trailer tyres?

When checking trailer tyres it is important to ascertain the age of the tyre. Unless a lot of touring miles are covered it is unlikely the tyres on a trailer will ever wear out. However, like all tyres, they will deteriorate with age and can become distorted if they are left unused in the same position. Surface cracking of the sidewalls can also occur if the tyres are allowed to become under-inflated and remain for a long period of time in that condition.

For this reason, it is recommended by the British Tyre Manufacturers’ Association that trailer tyres should be replaced when they reach five years old and they certainly should not be used for more than seven years.

etyres only buys tyres from the manufacturer when they have been ordered by a customer. This guarantees that customers are getting the most up-to-date stock, not tyres that have been gathering dust on a store room shelf in a large depot or warehouse for several years.

How to find out the age of a trailer tyre

The date a tyre was manufactured is shown on the sidewall markings of all trailer tyres as part of the DOT (U.S. Department of Transport) code, which can be found close to the wheel rim.

An example code is DOT A87C DEF 0114.

  • DOT stands for U.S. Department of Transportation.
  • A8 is the factory code where the tyre was manufactured.
  • 7C is the size code.
  • DEF is the optional code that refers to a brand or other characteristics specific to the tyre.
  • 0114 indicates the calendar week and the year when the tyre was manufactured, ie the first week of 2014

A small number of tyres may not have a DOT code but in these cases the date the tyre was manufactured may still be shown elsewhere on the tyre. For example, 4214 would be the 42nd week of 2014.

If you find your trailer tyres do need replacing you can order new tyres online by entering your tyre size into the search tool at the top of this page. If you prefer you can call our National Sales Team on 0800 028 9000.