Tires. How old is to old

pappyralph wrote:
What if,( my motorhome )tires have always been stored inside building, with pads between cement & rubber, only outside when on trip. Has got to be longer then about 7 years.

I certainly understand what you are saying. This is how it was explained on a tire thread a while back.

Tires are like a bowl of spaghetti.... the thread and belts are the noodles and the rubber and emollients inside are like the gravy (sauce). When the tires are heated the gravy mixes well with the noodles and everything is copacetic. Tires sitting will kill them.

MM.

I just replaced the tires on my coach that were 10 years old. They still looked fine and after they were off and inspected they still looked ok.
If I had taken them off at 7 years they would have gave me a used tire price on them ( a little more than casing price) and it would have taken some of the bite out of the cost.Tire shops cannot sell them after they are 10 years old. There are farm trucks and other equipment that can use them at 7 years old.

I was pushing it with the 10 year old tires and will trade them back in 7 years. This is what my dealer told me, they all may not be the same.

DanTheRVMan wrote:

pappyralph wrote:
What if,( my motorhome )tires have always been stored inside building, with pads between cement & rubber, only outside when on trip. Has got to be longer then about 7 years.

You do not understand

Sunlight exposure does not matter - 7 year life

under inflation does not matter - 7 year life

Over loaded MH does not matter - 7 year life

High southern heat when driving does not matter - 7 year life

etc. etc. - 7 year life

What a lot of people don't understand is a tier ages from the time it comes out of the mold. They will go bad siting in the warehouse.
If you dig around on the Michelin web site it will tell you the tiers need to be dismounted to be properly inspected.
Bill

pappyralph wrote:
What if,( my motorhome )tires have always been stored inside building, with pads between cement & rubber, only outside when on trip. Has got to be longer then about 7 years.

You do not understand

Sunlight exposure does not matter - 7 year life

under inflation does not matter - 7 year life

Over loaded MH does not matter - 7 year life

High southern heat when driving does not matter - 7 year life

etc. etc. - 7 year life

msmith1199 wrote:

Camper346 wrote:
Change them... Just had a blow out last month on our way home from Florida with our 7 year old tires. It was an expensive roadside repair.

Was it caused by age or under inflation?

Age

Camper346 wrote:
Change them... Just had a blow out last month on our way home from Florida with our 7 year old tires. It was an expensive roadside repair.

Was it caused by age or under inflation?

Change them... Just had a blow out last month on our way home from Florida with our 7 year old tires. It was an expensive roadside repair.

NAUTIQUE wrote:
Bought my Sumitomos in March 2007.
Have put less than 10,000 miles on them. Still look perfect. Never even looses any air. Not Covered (in New England) and at least get exercised every month for about 1/2hr, 35 mile ride of mixed highway & backroad.
Really torn on if I can stretch at least another season out of them.
Sure is a tough decision when the $'s are tight!

Replace the front ones and run the rears a while longer.

midnightsadie wrote:
IF one blows comes apart in a hundred pieces, it,ll do thousands of dollars in damage to the rv, change now.

If that happens and if it doesn't damage to the RV, that damage is covered by your insurance. A brand new tire can blow out too.

mookie6 wrote:
My tires on the wini 34ft are now at 7 years. Never kept them covered and always outside. Any Idea when to replace them. Thanks

I replaced my first set of tires when they were about 7 years old, now I wish I had not done that. Next time I'll replace the front tires at 7 or so years old and leave the back ones on a while longer. You can have them safety inspected and they will let you know if there is any danger with continuing to use them. The most common cause of tire blow outs is under inflation and the age of the tire doesn't matter for that.