How old is your spare tire? - Mercedes-Benz Forum
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post #1 of 15 (permalink) Old 12-28-2018, 10:23 AM Thread Starter
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How old is your spare tire?

The other day I decided to replace the 33 year old spare in my car. It was still holding air but I am sure it was way beyond its intended useful life.
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post #2 of 15 (permalink) Old 12-28-2018, 12:19 PM
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I would wager most are original. I know mine are!

Chief

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post #3 of 15 (permalink) Old 12-28-2018, 12:53 PM
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Yep, my 1983 380SL still has its original tire.
Over 35 years old ... but its a Michelin :-)

Carl

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post #4 of 15 (permalink) Old 12-28-2018, 02:58 PM
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The Saver size, the ones that you are not suppose to go over 50mph are supposed to be replaces every 6 years according to Discount Tire guy.
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post #5 of 15 (permalink) Old 12-28-2018, 03:22 PM Thread Starter
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Originally Posted by cwmoser View Post
Yep, my 1983 380SL still has its original tire.
Over 35 years old ... but its a Michelin :-)
My spare was a Continental.
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post #6 of 15 (permalink) Old 12-28-2018, 03:31 PM Thread Starter
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The Saver size, the ones that you are not suppose to go over 50mph are supposed to be replaces every 6 years according to Discount Tire guy.
The spare on a R107 is regular size tire/rim that matches the other wheels on the car. As @ChiefRider mentioned most are still the originals that came with the car which means some of them are 45+ years old.
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post #7 of 15 (permalink) Old 12-28-2018, 04:00 PM
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Yep, my 1999 ML430 is a youngster compared to your vintage Mercedes. These days with cell phones and roadside assistance, the onboard spare tire is pretty useless.

On our older vehicles you can be certain it is low on air and more than likely...dry rotted !
Also, if you contact a dealer, and if they can special order one for you, it is expensive !

Your best bet is a junkyard or pull-a-part location where you might find one that has never been used and in decent shape. I think i paid $15.00 for one I found and , along with the wheel/tire, i also pulled the bracket and hardware with it ! This was all located under the rear bumper. On your Mercedes it may be in the trunk where it would more than likely be in better shape...

Anyway, I pride myself in keeping my original owner 1999 ML430 in excellent condition and recently just turned over 400,000 miles ! Now shooting for the 750,000km badge which equates to 466,000 miles ! Wish me luck !! You can visit the W163 forum to follow my W163 history which has been pretty much trouble-free and very rewarding !! Cheers and Happy New Year !!

springerfever
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post #8 of 15 (permalink) Old 12-28-2018, 04:21 PM
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Originally Posted by springerfever View Post
Yep, my 1999 ML430 is a youngster compared to your vintage Mercedes. These days with cell phones and roadside assistance, the onboard spare tire is pretty useless.

On our older vehicles you can be certain it is low on air and more than likely...dry rotted !
Also, if you contact a dealer, and if they can special order one for you, it is expensive !

Your best bet is a junkyard or pull-a-part location where you might find one that has never been used and in decent shape. I think i paid $15.00 for one I found and , along with the wheel/tire, i also pulled the bracket and hardware with it ! This was all located under the rear bumper. On your Mercedes it may be in the trunk where it would more than likely be in better shape...

Anyway, I pride myself in keeping my original owner 1999 ML430 in excellent condition and recently just turned over 400,000 miles ! Now shooting for the 750,000km badge which equates to 466,000 miles ! Wish me luck !! You can visit the W163 forum to follow my W163 history which has been pretty much trouble-free and very rewarding !! Cheers and Happy New Year !!

springerfever
Useless spare but depending on where live, how crappy the roads are, and what time of night you drive, may not be so useless. Where i drive lots of areas have no cell coverage, but even if they did finding road service at 2 am just doesnt happen, even at 6:30 in the morning it took two hours to respond, Last year I had two flats, and a every week I would see someone with a flat tire. Bent rims pots holes destroy tires.
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post #9 of 15 (permalink) Old 12-28-2018, 05:27 PM
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You really do not want to have a 35-year-old plus tire, even as a spare. I have seen wonderful looking and never used spares shred within 10 miles after being placed on the car- - - and this was with the car being kept below 40pmh.

The factory Mercedes original and never installed temporary spare on my sons 2005 E class was useless (this tire was only 13 years old) when he tried to install it in northern Oregon late at night on a nearly deserted road in an area with no cell phone service. He installed it and the valve stem immediately broke right off. He had to walk for several miles to try to get a cell phone signal to call for help. Not something I would wish on others. Luckily, he did not hear any dueling banjos.

Every tire I have had problems with were older. My F250 separated a tread on its front tire and the tire was 7 years old and low miles. Sadly, I had a new set on order to be installed the following week when the separation occurred. It wrecked the front bumper, front fender, running board and a lot of associated parts. This one tire did nearly $5000 in damage to the truck.

Keep tires up to date on spare tires on these vehicles and on the road tires also. Anything over 6 or 7 years old should be trashed. It doesn’t matter if they have low miles, no cracks, and have always been garaged. Studies show that today’s radials lose 25% or more of their structural strength after 6 years. You can guess what strength is left after 35 years. If for some reason you want an old spare because it was original, keep it and the rim in your garage or mount it to your wall and put another wheel and tire in the car.

Today’s radials are not like the nylon and rayon cord tires from years ago which would hold up even when old. Todays tires fall apart from age alone.

Rick
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post #10 of 15 (permalink) Old 12-28-2018, 07:54 PM
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if protected from UV tyres could last well over the prescribed period.
I coated my original Michelin spare with silicone oil to minimise air exposure. Apparently black gladwrap can do miracles too.

.
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