Thread: definition of a new tyre

Funny that tyres are classed as an environmental danger and take hundreds of years to break down.
I think a lot would require a risk assesment on their state and degradation. Exposure to sunlight and elements etc. Quality of tyre.
Generally I would use them as spares, trailer tyres or at least put them on the rear. I still have 1 tyre only half worn from my Disco 1 and I got that in 97 and it is still in great nic for its age. Have others probally that old on a trailer and they are still sound.
Are they being prompted by the tyre manufacturing companies.

they are made of silica.......and rubber.....

rubber will perish with time......but they will start to perish from the outside....
you will see age cracks start to appear on the outside....especially in the tread area........


i had 4 tyres on mine dated 02......and i just fitted another one which i had stored under the house for 3 years......same date.......

lurch has never lived in a garage or under a carport.......he wont fit......

these are still fine.......no cracks yet or any other problems......



what i have noticed......is that the cheaper brands seem to perish faster than the quality tyres........

When I first start work in 75, the guy I worked for had log trucks. He purchased tyres 3 years in advance and had shed full of tyres on racks and when we changed tyres, they come out of the shed by date. He even went as far as writing down serial numbers. He said you cant run new tyres they need to mature
cheers
blaze

Originally Posted by bblaze

When I first start work in 75, the guy I worked for had log trucks. He purchased tyres 3 years in advance and had shed full of tyres on racks and when we changed tyres, they come out of the shed by date. He even went as far as writing down serial numbers. He said you cant run new tyres they need to mature
cheers
blaze

My father used to do the same thing, 40 years ago, with car tyres. He would store them in the shed, raised off the ground and with a tarp over them.

back then tyres were constructed differently........they would also have been crossplys.......

they were also made of rubber.......todays tyres are mainly made from silica.....which is a white powder.......
and are really only coloured black for traditional reasons.......they can actually make them any colour you like........

there are other elements in a tyre other than silica......but that is one of the main ingredients......


with the old crossplies......if you left a car sit still for too long......like weeks....the tyres would get a flat spot till they warmed up and softened up enough
to go back to a round shape again.......and roll smoothly......

thats why.....if people were going to leave their cars parked for a while....such as to go overseas for example.....they would jack the car
up and leave it on bricks........

that doesnt really happen with todays radials.......due to the different construction........

Originally Posted by DEFENDERZOOK

back then tyres were constructed differently........they would also have been crossplys......
they were also made of rubber.......todays tyres are mainly made from silica.....which is a white powder.......
and are really only coloured black for traditional reasons.......

That lot was hard to read!!!

Tyres do indeed contain no natural rubber these days, rather synthetic polymers. However the black colour is not just for fashion.

Carbon black nanoparticles (not unlike diesel soot) are added to tyres for UV resistance and structural reasons.

Back to the OP. The 6-7 year lifespan of tyres is just a guideline atm, however it is pretty rough that they sold you an old tyre. I would probably take it up with the place you purchased it and/or the tyre company.

Personally though, I will use tyres until they are either too worn, too hard, or visibly defective (cracks or bulges).

...

Bought a set of tyres for the OKA recently. 305/70R19.5's from Bridgestone. Normally they're over $700 each but Bridgestone were selling them out for $300 +GST including fitting and balancing. The reason I was given was that once the tyres were over 12 months old, these were 15 months old, they were too old to be considered 'new'. Bridgestones loss my gain.

Deano