Community Forums

Mr_D · 05-31-2012, 07:19 PM

Quote:

Originally Posted by 336muffin

Roger G, on one side of the tire it says example=(DOT 0405) the first two digits are the week, the second two digits are the year. So in the example it would be 4th week of 2005. Months are not needed. This is usually next to the rim, maybe.

True, but only for tires made in 2000 or after, before that it was only three digits with the first two being the week and the last one being the year. So 049 might be the forth week of 1999 or 1989.

Mr_D · 05-31-2012, 07:20 PM

Quote:

Originally Posted by WeatherTodd

Not going to disagree BUT... does that mean "constant" use extends the service life of the tire?

In most cases, yes.

CD · 05-31-2012, 07:51 PM

Quote:

Originally Posted by WeatherTodd

The basis for my question is pretty simple. RV take off tires... regardless of age get reused by the logistics/transportation industry. And an additional rube I saw today with my own eyes... 2004 date code tires on a city bus. (gasp)

How high would the risk factor be for a bus that probably rarely goes more than 40 in the city. It shouldn't be a big problem controlling a bus with a blowout at that speed. Also low speed means low heat (the tire killer) so the tires should deteriorate slower.

WeatherTodd · 05-31-2012, 08:13 PM

Quote:

Originally Posted by CD

How high would the risk factor be for a bus that probably rarely goes more than 40 in the city. It shouldn't be a big problem controlling a bus with a blowout at that speed. Also low speed means low heat (the tire killer) so the tires should deteriorate slower.

Seems that most drive their RV ~60-65mph. Buses stop quite frequently. Im sure this adds heat/load to the tires. Keep in mind too... 20 folks @ 180lbs each add a significant amount of weight.

wb7auk · 05-31-2012, 08:22 PM

Quote:

Originally Posted by WeatherTodd

Seems that most drive their RV ~60-65mph. Buses stop quite frequently. Im sure this adds heat/load to the tires. Keep in mind too... 20 folks @ 180lbs each add a significant amount of weight.

The short answer No

Mr_D · 05-31-2012, 08:29 PM

I'm 65 now but I was 63 when I replaced my MH tires.

frederick w · 05-31-2012, 08:41 PM

Costco gave me a price of $ 2,385 out the door for
6 Michelins, XRV series. Excellent price!

But they will not gurrantee a mfg. date under a year.

Now what?

Thanks in advance.

Midniteoyl · 05-31-2012, 09:08 PM

2004 date code means 7-8 year old tires, not 10...

Midniteoyl · 05-31-2012, 09:11 PM

Quote:

Originally Posted by WeatherTodd

Seems that most drive their RV ~60-65mph. Buses stop quite frequently. Im sure this adds heat/load to the tires. Keep in mind too... 20 folks @ 180lbs each add a significant amount of weight.

Naww.. Standing still, tires can hold almost infinite weight w/o popping... at 40mph, they can hold something like 10x more than they can at 65. And, they are flexing a whole lot less, so have a whole lot less heat. Starting and stopping doesnt hurt, only helps.

Rom · 05-31-2012, 11:32 PM

Just replaced mine (Michelin XRV's 22.5 birthdate 3905) early this month. Tried to get 2012 birthdates but Les Schwab could only get me ones made at 4511. I guess since they are not Michelin distributors, they're low on the pecking order for new ones. But it's OK since the price was much lower than the Michelin distributors.

Old Trucker · 06-02-2012, 04:25 AM

Quote:

Originally Posted by WeatherTodd

Im going to need more proof than just your word. I agree that tires deteriorate... thats not what Im debating.

A more scientific statement would be... tires in excess of 2400 days past production date are ___ % more likely to fail than tires 1 day past production date if subjected to the following conditions.

Other than "fear" mongering... nobody has presented a valid, reasonable recommendation for such unrational concerns.

The basis for my question is pretty simple. RV take off tires... regardless of age get reused by the logistics/transportation industry. And an additional rube I saw today with my own eyes... 2004 date code tires on a city bus. (gasp)

I am a retired cross country trucker. I would not be afraid of the old tires on a city bus, WHY; how fast does a city bus travel????maybe 35 mph???So a tire blows, at these speeds I would not be alarmed as a driver or passenger. How far is a city bus from a tire shop... I agree these tires are plenty old, but in this application, I do not see a problem. the old trucker

Coma · 06-02-2012, 05:26 AM

Quote:

Originally Posted by Old Trucker

I am a retired cross country trucker. I would not be afraid of the old tires on a city bus, WHY; how fast does a city bus travel????maybe 35 mph???So a tire blows, at these speeds I would not be alarmed as a driver or passenger. How far is a city bus from a tire shop... I agree these tires are plenty old, but in this application, I do not see a problem. the old trucker

It's a risk reward scenario. How much is a high speed blowout going to cost you? What is the chance of that happening vs the probability? I'm probably going to change out my steer tires less than 5 years because a steer blow out is worst case.

Roger G · 06-02-2012, 07:09 AM

Checked my date code yesterday, 4306 so they are going on 6 years old with 6000 miles. No visible wear or cracking, so would you go ahead and replace all 6, replace the two fronts, or wait another year? Does anybody besides Michelin make 235/80 R 22.5 XRV's, I've looked online and that is the only maker for that size? Thanks!

wb7auk · 06-02-2012, 07:24 AM

Quote:

Originally Posted by Coma

It's a risk reward scenario. How much is a high speed blowout going to cost you? What is the chance of that happening vs the probability? I'm probably going to change out my steer tires less than 5 years because a steer blow out is worst case.

Well not really there are studies out there that say the total loss of any
rear tire or tires is worst case. On duals you have to loose both tires on
one side for this to be true. Has to do with the ability to add power to
correct drag.