Goodyear Endurance

[CruizinDux]

Skip, free advice is worth what you pay for it but IMO, but in consideration we have the same rig and i run gye's, unless you are really running light as verified by the scales, 65 psi likely leaves no much margin.

Like others, i don't unhitch and infact disc tire pulls the whole rig into the bay and does the tv, then the tt. Good suggestion re the bars, but they have not posed a problem.

B

[CruizinDux]

Forgot to mention above but it seems Tireman9 ?? mentioned to not adjust psi for expected warmer temps during the day as tires warm from driving but to set based on ambient temps in a.m. only.
B

[Skip Stone]

CruizinDix,

I appreciate your input. Are you suggesting 80 PSI?

Skip

[smithcreek]

Originally Posted by Skip Stone

CruizinDix,

I appreciate your input. Are you suggesting 80 PSI?

Skip

Skip, the easy answer is I have the same trailer and run 72psi cold. Chances are the temperature change in FL from morning to afternoon is about the same as it is in RI, FL just starts off warmer. The highest pressure I've seen is around 82psi which is fine.

The long answer is you calculate the MINIMUM REQUIRED pressure based on the actual weight on your trailer's axle, taken at a CAT scale. Divide that by two and add 15% to that number (I've seen both 10% and 15% recommended). Then consult the tire pressure chart which will give you the minimum required pressure for that load. With the FC20 you will probably end up right around 65psi as a minimum.

You already know 80psi is the max, so now you have a range of acceptable tire pressures. The tire experts recommend running the highest pressure you can that does not cause harm to the trailer. I personally have found 72 psi to be that number. Higher than that and drawers and cupboards start to open and lots of things end up on the floor.

[OTRA15]

FYI

Echoing Post #6 about other GYE threads available:

Originally Posted by OTRA15

FYI there are many threads/posts on the GYE tires and pressure:

https://www.google.com/search?q=GYE+...com&gws_rd=ssl

https://www.airforums.com/forums/f43...re-179306.html
https://www.airforums.com/forums/f23...ce-194779.html
https://www.airforums.com/forums/f43...ce-170015.html
https://www.airforums.com/forums/f43...re-197588.html
https://www.airforums.com/forums/f43...tl-193226.html
https://www.airforums.com/forums/f43...on-195535.html
https://www.airforums.com/forums/f42...ks-199067.html
https://www.airforums.com/forums/f43...on-199309.html

~500 posts in those threads.

FYI

Peter

FYI
FWIW

[CruizinDux]

Originally Posted by Skip Stone

CruizinDix,

I appreciate your input. Are you suggesting 80 PSI?

Skip

Skip, I'm with smithcreek, which is a great explanation. Know your true per tire weight for each side and use the higher #. got out the calculator last night for my weight, about 2300 per tire max. 65 was minimum but i landed around 70 and rounded up. My target range is 72-75 which allows me to carry more FW and sometimes BW&GW without adjusting psi. In fact, these gye's hold air like no others. On our last 2 month trip to ME i only added air 2-3 times.

I bungee the refer as a matter of GP, have added a simple hook gate latch to the can rack slider and will swap out the lav door oem latch for a stronger magnet. I have had trouble there more likely related to the hinge loosening, ongoing adjustment and latch alignment challenges. At 80 (when on first post install trip) like smithcreek said...it was a bit too bouncy. Also long ago i added a rev-a-lock to the pot/pan drawer after blowing out the glides attachment screws. Never had a problem since regardless of psi.

https://rev-a-shelf.com/2647

B

[Tireman9]

Originally Posted by Bill M.

Is interplay shear also related to the trailer weight? Do lighter trailers make less interplay shear forces than heavier trailers on the same turn?

I really do not care about my tire life as long as I get 4 trouble free years.

If EVERYTHING else is identical, lighter load with the same inflation or higher inflation with the same load will result in lower Interply Shear forces.


When comparing two tires of the same size, Load Range, inflation and loading it is possible for one tire to have a more robust belt package that can tolerate (resist structural damage) than another tire.


In anticipation of questions on how to identify a tire with "better" construction, I offer the following opinion.



In general, I think it is probable that tires with no Nylon layer over the belt edge are less robust than those with one layer and tires with two caps are probably more robust than a tire with only one layer over the belt edge BUT


this is not an absolute, 100% reliable comparison as there are other construction details and material selections that can be used to offset the presence or lack of a cap layer.

[Tireman9]

Originally Posted by CruizinDux

Forgot to mention above but it seems Tireman9 ?? mentioned to not adjust psi for expected warmer temps during the day as tires warm from driving but to set based on ambient temps in a.m. only.
B

For normal situations (not traveling above Arctic Circle or inflating tires in an air conditioned shop at 70F when it's 120F out side or when you are driving in NASCAR or at the Indy 500) You set tire pressure BEFORE tires are warmed by being in the sun and BEFORE tires are warmed from being driven on.


Most of the time we see the ambient temperature might change by 10F to 40F during a day's drive but even that 40F change would only affect tire pressure by about 8%.

We tire design engineers know this and test our tires to be able to tolerate normal pressure increase.

[SpinWhite]

Our Endurance tires have cracks in the inside and outside groves of tread. The date of manufacturing all of the tires is the 2nd week of 2017. No other cracks can be seen. We planned for new tires at the end of the summer. Are the cracks the end of this set of tires? See attached picture. Thanks

[ROBERT CROSS]

^
UV exposure is the most likely cause, your location is a contributor for sure. Not necessarily a cause for immediate replacement.
303 Protectant and covering recommended.

Bob
🇺🇸

[JJTX]

Originally Posted by SpinWhite

Our Endurance tires have cracks in the inside and outside groves of tread. The date of manufacturing all of the tires is the 2nd week of 2017. No other cracks can be seen. We planned for new tires at the end of the summer. Are the cracks the end of this set of tires? See attached picture. Thanks

No. This is normal tire wear as far as I can see in your pictures.

LARGE tread separation is bad though if thats being seen.

"cracks" on the sidewall is more of a concern.


I keep my tire sidewalks coated with a good high quality tire dressing that blocks UV.

[Mollysdad]

Are you referring to this?
I don't think that would stop me from driving on them.
Tires squirm a lot, especially on double axle trailers.

[SpinWhite]

Originally Posted by Mollysdad

Are you referring to this?
I don't think that would stop me from driving on them.
Tires squirm a lot, especially on double axle trailers.

Yes Mollysdad that’s the cracks. I keep the FC in a metal bay with north, south walls and a roof. But we are out and about half of the year. I did notice some squirming when semi’s passed us last week. Tire pressure 75 psi.

[OTRA15]

Thanks for the photo. How many miles do you have on those GYE tires please?

There are a couple of tire experts here who will probably drop by and comment. You could peruse the recent posts, and send them PM's. They may suggest "interply shear" [IPS] as a contributing cause, as anticipated by Mollysdad.

https://www.google.com/search?q=inte...=airforums.com

When you park the trailer in the storage bay, are the tires on hard pavement/slab, and do you have to make tight turns to line up/position it correctly? There's your IPS IMO.

Thanks,

Peter

[OTRA15]

Originally Posted by JJTX

. . .
I keep my tire sidewalks coated with a good high quality tire dressing that blocks UV.

Like this?

https://www.amazon.com/303-Products-.../dp/B06XQ32LVZ

What do you use?

Thanks,

Peter

[ROBERT CROSS]

https://www.amazon.com/303-30313-CSR.../dp/B00KN0UOEE For me...makes 'em look good at least.

But if you exercise the tire enough the protectant that's already in the tire will come to the surface...problem with the AS tires...they sit quite a bit between trips.

Bob
🇺🇸

[SpinWhite]

OTRA15 it has 25000 to 30000 miles. The bay has concrete floor but it sits on half inch plastic material. If our pasture is dry I make a large curve. If wet I back in on a gravel approach that’s tight turn.

[OTRA15]

Thanks for the details . . . will wait for the tire experts to comment on the interply shear possibilities. Your gravel tight turn might contribute, as well as any tight turns while on the road. Lots of info in the search results posted earlier in Post #134.

Peter

[CapriRacer]

Originally Posted by SpinWhite

Our Endurance tires have cracks in the inside and outside groves of tread. The date of manufacturing all of the tires is the 2nd week of 2017. No other cracks can be seen. We planned for new tires at the end of the summer. Are the cracks the end of this set of tires? See attached picture. Thanks

Normal 3 year old tires.

Post a photo in July - assuming you're back on the road as normal. If not post a photo after 2 or 3 months service. I'll bet they won't have changed that much.

[OTRA15]

Thanks, Barry.

BTW the link to your secure website, in the signature, is not working here.

This non-secure link seems to work:

http://www.barrystiretech.com/index.html

Peter