Hi Kees, interestingly the guy who asked the question on the tyres has a
Lotus Elan. Last year on our way to a show, I was following behind in the
Healey, it was raining not too heavy and the road was damp. After coming off
a round about and accelerating up hill slightly he lost control and ended up
in the hedge, please see the following links:
http://www.ccw-tools.com/uploads/images/DSCF1095.jpg
http://www.ccw-tools.com/uploads/images/DSCF1096.jpg
I never thought about it at the time but this was a sudden loss of grip at
slow speed around 20 - 25MPH. I guess it could have been as a result of the
tyres being old and hard?
Kindest Regards
Tom
Classic-Car-World Ltd
www.ccw-tools.com
AH 3000 MkIII (BJ8)
MGA 1600
Mini Park Lane
----- Original Message -----
From: "Oudesluys" <coudesluijs@chello.nl>
To: "Tom McCay - Classic-Car-World Ltd" <enquiries@classic-car-world.co.uk>
Cc: <healeys@autox.team.net>; "MG List" <mgs@autox.team.net>
Sent: Thursday, May 27, 2010 12:08 PM
Subject: Re: [Healeys] Tyre life expectancy
> Tom,
> This has been discussed regularly on all classic car fora.
> For safety sake tires should be changed after 7-10 years of age (as
> indicated by the marks on the tire, not the bill of sale), depending on
> storage conditions and opinion of people in the know. They may be
> perfectly OK after this time but you cannot be sure. The compound hardens
> ( leading to bad road behaviour and wet road performance) and can change
> without any external signs like cracks or crazing, also invisible internal
> delamination can be at hand (sudden blow out, desintegration of tire).
> Tire tests show again and again that NOS tires do not comply anymore with
> the original High Speed requirements and many serious accidents caused by
> a blow out have been attributed to old tires that were sold and fitted as
> new tires.
> My own experience has been with the tires on my Jensen Healey I bought 2
> years ago. It had new tires in 1999 (date of manufacture 1997) , had
> driven about 2000mls from that time and the tires looked absolutely brand
> new. Wet road behaviour was terrible and it handled like a dog, OK they
> were Hankooks but even new Hankooks should not handle that bad. Obviously
> the compound had hardened considerably.
> I changed them recently to Nokian V tires and this changed the road
> behaviour of the car very dramatically.
> Kees Oudesluijs
> NL
>
>
> Tom McCay - Classic-Car-World Ltd wrote:
>> Hi all, we had an interesting discussion last night at our monthly local
>> car
>> club meeting when someone asked the question of "what life expectancy
>> should
>> we expect from the tyres fitted to our classic cars"? Some of these cars
>> do
>> less than 1000 miles a year and almost all are laid up during the winter
>> months in dry storage. Some cars have been in the same ownership for over
>> 10
>> years and have the same tyres fitted when they acquired the vehicle.
>>
>> The tyre condition is good with no apparent cracking on the tyre walls
>> that
>> you see on some very old tyres and tyre wear is not the issue either, but
>> at
>> what point should you consider changing these anyway due to age?
>>
>> Kindest Regards
>>
>> Tom
>> Classic-Car-World Ltd
>> www.ccw-tools.com
>>
>> AH 3000 MkIII (BJ8)
>> MGA 1600
>> Mini Park Lane
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