This is the article I was seeking earlier. It's on the IVVCC website at
http://www.ivvcc.ie/news.htm. Scroll down to the second article.
I believe it just isn't worth the risk to either my Elan or the possibility of injuring someone - or worse.
TYRES --- A WARNING!
The following article is reproduced courtesy of FBHVC (Federation of British Historic Vehicle Clubs), Newsletter 04-07. This is is a much-overlooked item of safety --- even by drivers who are fastidious about high standards. Many are not aware that tyres degrade with time and become unsafe; note the recommendation in red below. The FBHVC are to be commended for highlighting this issue. (Thanks also to Noel Doyle for bring attention to this article.)
Her Majesty?s Coroner for Manchester wrote to FBHVC just after the last newsletter went to press and many will have seen this topic on our (FBHVC) website - it is an important matter and we urge clubs to pass the warning on to their membership if they have not already done so.
The letter concerned an accident that took place last year in which the driver of an H registered MG B lost his life when a rear tyre burst on the M56. The driver was a skilled mechanic and a careful and experienced driver who was not travelling particularly fast at the time. The car was described by police as being maintained in excellent condition. The surviving passenger said that just before the accident the driver had commented that a ?tyre wobble? had developed and he was going to ?drive through it?. The wobble went briefly, but then the tyre burst, causing the car to spin, clip a kerb and flip over.
Subsequent investigation showed that although hardly used the tyre was 25 years old. It was one of a set of as-new tyres and wheels bought at an autojumble the previous year for use for show purposes (at the time of the incident the car was on its way to an event at Oulton Park).
This note appeared in the Newsletter for December 2003 following a suggestion that tyre dating may become a feature of the MoT: ?the Vehicle Standards and Engineering Division at the Department for Transport [has advised us] that although most tyres already carry dates of manufacture in their side-walls, there are no plans to implement regulations to check such dates at the annual MoT test. DfT would, of course, change their mind if tyre failure due to age became a significant cause of accidents.
The British Rubber Manufacturers Association suggests that if a tyre is six years old and remains unused it should not be put into service. It also suggests that in ideal conditions tyres may have a life expectancy of 10 years.
The moral of the story is not to wait for legislation, but to make sure your own tyres are in good condition, never to use undated or obviously old second hand tyres however good the tread and never to ignore a ?tyre wobble?.
The webmaster found the following helpful information published by the Vredestein tyre company:-
The sidewall of the tyre carries a code from which the production date can be derived. Since January 1st 2000 the production date is made up of 4 numerals, for instance
DOT 9D YE 2406
means that the tyre was made in the 24th week of 2006
From 1990 to 1999 these were 3 numerals with a triangle, for instance 4583
which in this example means that the tyre was made in the 45th week of 1998. If there is no triangle behind the three numerals, the tyres were made prior to 1990. Please check your tyres and if they are more than six years old you should consider replacing them with new tyres. Driving on tyres more than ten years old may expose a driver to liability for using unsafe components on his vehicle.