Tyre dating marks
The tyre in itself will not deliver lesser performances so long as it was stored in optimal conditions.These are a few of the two dozen or so marks used by the factory from the 1800s onwards. In brief, your piece may be marked "England" rather than "Made in England", or it may say "Newcastle" rather than "Newcastle-on-Tyne". A typical Maling castle mark used from the 1920s through to the factory's closure in 1963.The next two digits represent the size of the wheel rim that the tyre can be fitted to.
Although not illegal, it is not advisable to have tyres with a lower speed rating or load index than the manufacturer recommended tyre specification for your vehicle, or to have a combination of different tyre construction types.Several other potteries also made Coronet Ware The numbers on Coronet are generally in the form of xxx/yyyy. Records have been lost, and we have no idea what they mean. If anyone tells you that these signed piece are "rare" and therefore valuable, tell them that you beg to differ. Probably not, judging by research from Kwikfit which suggests that only 17 per cent of drivers can assess the age of their rubber and then know when it's time to change.The fourth and fifth digits of the tyre code that immediately follow the tyre width.
The aspect ratio or profile height of the tyre sidewall is expressed as a percentage of the tyre width.
So an aspect ratio of 55 for example means that the profile height of the tyre is 55% of its width. Radial tyres are constructed with the cord plies positioned at a 90 degree angle to the direction of travel to give the tyre additional strength.