I've heard of guys racing at Bonneville using tires from the 50's and
60's that were dusted with talc, bagged, and kept in cool dry storage.
I don't know if I'd have the balls to do that, but apparently no tire
mfgr. is willing to make new tires for certain types of land speed race
cars due to liability reasons.
replace "roosters" with "cox" to reply.
So far as I can tell the rubber looks to be just fine. I guess I'm a little
worried seeing how they've been in the garage for about 6 years. Only way
to tell is to mount them and see what happens I guess - no sense tossing a
set of 4 completely good tires without attempting to see how they'll do??
A friend of mine bought an old Studebaker with some new-looking but
obviously at least 10 year old cheap radial tires on it. After a couple
days in the sun, the carcasses all expanded and the tires all threw off
their tread - without the car moving at all!
replace "roosters" with "cox" to reply.
the DOT number on the tire shows the production date. In pennsylvania
state vehicle inspection mechanics are supposed to check all tirees
nymbers and reject any that are too old. I will ask a inspection buddy
but I beeve it 6 to 8 years. these rules started after some accidents
caused by aged tires shredding and deaths.
by 10 years outdoors tires are junk, I replaced some trailer tires and
a buddy has cars that get little use, like a few thousand miles a
He was forced to replace the tires at 10 years, and remarked the tires
sun shined on were much worse.
on 6/2/2007 9:19 PM Eigenvector said the following:
They will have lasted a longer time than if they had been driven on for
No tread wear, no flexing of the sidewalls, no sunlight, less rapid
temperature changes, no scuffing, etc.
Inspect them for dryness and cracking. If you are not going to try them
in the near future, throw some tire shine product on them, inside and
out. While I am on that subject, I bought a 4 pack of Permatex's 'No
Touch' tire spray at Sam's. No wiping, just spray and forget. It worked
so well on the tires that I power washed and sprayed my entire engine
compartment with it, including air ducts, hoses, wires, distributer,
anything that was plastic, and even the painted firewall and fender
wells. That was last year and it still looks good.
I also did the engine compartment of my wife's car, and my friends car.
My '69 Toyota Corona, long gone, came with single ply tires as I recall --
thin sidewalls. I didn't see any cracks but two tires suddenly went flat
with no sign of a puncture and low mileage. Weathered sidewalls finally let
the air out when the tires were five years old.
For what it's worth, most of the rubber trim on that car also suffered sun
damage. I imagine sturdier tires with two or more ply in the sidewalls
would be less prone to such failure, tractor tires that live forever being
"Longer", maybe, yes. I can attest that tractor tires won't live
"forever", however, from UV. They are very prone to developing deep
cracks at the base of the tread bar and will fail under use. Takes a
while, but more rubber and plies alone don't eliminate the problem,
just extend it...
Amen...although don't know how you can keep a spray-on protectant on
the tire anyway unless the tractor isn't used...
Depending on where you are and what you use,
Brings up the question: How long will tires last when they are in use? I
drive 3000 miles a year. My tires are 8 years old. They have a lot of tread
left but, are they still save? Do tires last longer when they are mounted
and in use?
There is no universal answer- depends way too much on local environmental
conditions like heat and sunlight exposure, how well they were kept
inflated, ad infinitum. I don't remember the figure, but several tire
companies and car companies now recommend changing at X years or Y miles,
whichever comes first.
Best answer is to inspect and check pressure regularly. If you see sidewalls
starting to crack, probably time to start looking at ads. I have one car I
barely use, and the tires still look new after 4 years. The daily driver, I
think the oldest tire left is maybe 7 years old, moved from the car it
replaced, along with the rims. (That car is a ligtning rod- I keep getting
damaged tires from road crap, so far replaced at pro-rated discount under
warranty.) When you take it in for an oil change, have the pit guy use his
flashlight and inspect the inner sidewalls of the tires, too.
Having said all that, if the tires were five or six years old, and I was
planning a cross-country trip, I'd be inclined to throw a fresh set on there
just for the hell of it. Murphy being Murphy, the tire that fails will be in
the middle of freaking nowhere, 51 miles to nearest town, at 2 am. (Can you
tell I'm not a fan of those tiny skinny spare tires they provide these
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