Community Forums

6x16inside · 07-22-2017, 07:00 PM

I have a "6pack in the back", 2 farthest then 4 and am wondering if say an inside tire on the drivers side blew, could i continue going to a service area as opposed to being stuck on the shoulder?

pplwizard · 07-22-2017, 07:12 PM

Given that a blown tire can do a lot of damage, I'd stopped... 3 weeks ago this was my rear tire. I stopped and no damage

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CarlAda · 07-22-2017, 07:39 PM

With one tire blown, you put all of the weight onto a single tire. There's a good chance that tire will be overloaded and likely blow, as well.

Murf2u · 07-22-2017, 07:59 PM

Quote:

Originally Posted by 6x16inside

I have a "6pack in the back", 2 farthest then 4.........

Quote:

Originally Posted by CarlAda

With one tire blown, you put all of the weight onto a single tire.

That must be that 'new math' I keep hearing about.

3 tires per side, duals plus a tag, minus one blown tire would leave 2 tires on that side by my calculations.

4x4van · 07-22-2017, 08:18 PM

With a tag, while the remaining tires may not be overloaded, driving with a flat (especially a blowout) will usually cause damage to the rig; undercarriage, body/fender, wiring, even inside cabinets.

Gary RVRoamer · 07-23-2017, 12:46 PM

It's a crap shoot with one tire gone. The others have to pick up the load and one of them, likely the other one of the dual pair, still has high potential of being overloaded. The tag doesn't necessarily help much at all, depending on its height (air pressure) setting. If your rear tires have an excess of load capacity, you might be able to inflate them further to carry more weight. Typically the rears on a tag axle configuration are all running at a relatively low psi/loading, so you can help a lot by inflating to max.

Crasher · 07-23-2017, 01:02 PM

With the proportioning valves setting the weight that the tag carries, the tag will not carry any more weight if one of the drive axle tires fail. All of the weight that was on the failed tire will transfer to the remaining good tire on that end of the axle. It would be no different than a tire failing on a non tag coach. You had better stop or you will have two tires failed on that end of the axle and the proportioning valve will prevent the tag from carrying more than it did before the failures.

6x16inside · 07-23-2017, 01:23 PM

And the tag is what please??

I drive all over the state for work and mostly at night and came upon an ABF with sparks and stinky odor coming from his far rear passenger tire.
Thats what got me to wondering.
He paid zero attention to my attempt to warn him as tho he may have known and was going ahead and getting to his destination.
Thanks for the replies.

Crasher · 07-23-2017, 02:16 PM

Quote:

Originally Posted by 6x16inside

And the tag is what please??

I drive all over the state for work and mostly at night and came upon an ABF with sparks and stinky odor coming from his far rear passenger tire.
Thats what got me to wondering.
He paid zero attention to my attempt to warn him as tho he may have known and was going ahead and getting to his destination.
Thanks for the replies.

A Tag axle is an undriven axle with it's own suspension that carries a portion of the rear weight, but just "Tags" along behind the drive axle. On motorhomes they generally have one tire at each end. If the same type of undriven axle with it's own suspension is in front of the drive axle, it is referred to as a "Pusher" axle, as it is being pushed by the drive wheels

CarlAda · 07-23-2017, 03:49 PM

Quote:

Originally Posted by Murf2u

That must be that 'new math' I keep hearing about.

3 tires per side, duals plus a tag, minus one blown tire would leave 2 tires on that side by my calculations.

yes, 2 tires on the side, but only one on the drive axle. Not sure how you determine your pressures, but the load could be an issue with only one tire on the drive axle.

Crasher · 07-23-2017, 06:43 PM

Here's what would happen with 20,000# on the drive axle and 6000# on the tag axle. That's 10,000# on each end of the drive and 3000# on each side of the tag. If one tire on the drive axle fails, the remaining tire will have to carry the entire 10,000# and the tag will continue to carry 3,000# as the tag suspension doesn't care what happens to the drive. It is set to carry 3,000# and no more unless someone can manually increase the pressure in the tag suspension. It wouldn't take long for the good axle tire to fail too, as it would be 5,000# over what it was pressured to carry.

6x16inside · 08-05-2017, 09:40 AM

Clipping too many curbs when turning?

Quote:

Originally Posted by pplwizard

Given that a blown tire can do a lot of damage, I'd stopped... 3 weeks ago this was my rear tire. I stopped and no damage
Attachment 169716

Mr_D · 08-05-2017, 09:54 AM

I had an outside drive tire go flat. Drove about 10 miles on it. Got a Les Schwab truck to come. Young man patched the tire still mounted on the axle. Cost me $45 total. Drove the rig about 300 miles after that. Luckily my new tires were already on order and came in the next Monday.
On my year/model Country Coach the manual states that you must run the pressures on the Federal sticker. I attribute the tire still being usable after the flat to the other tire having a higher pressure than required for the actual weight carried.