Wheel Ratings

TheGriz · 02-06-2018, 08:58 AM

Good morning all,

I finally went out and took a look at the aluminum wheels on my TT for ratings (brrrrr). On the inside of the rims I found the stamped markings "97 T", "0505 A/O A/O", and "B6". Could someone who has the de-coder ring" let me know what these markings mean?

Appreciate any help?
Mike

Hodgy · 02-06-2018, 09:02 AM

.

I see your dog was there, didn't he know ?

.

**JRTJH** · 02-06-2018, 09:15 AM

Those are manufacturer markings and aren't the load ratings you're looking for. You'll need to remove the wheel and find the markings on the inside of a spoke. They will look something like these

TheGriz · 02-06-2018, 09:25 AM

Quote:

Originally Posted by Hodgy

.

I see your dog was there, didn't he know ?

.

He's a pretty smart cookie! But you know these kids today. If there is a ball around, I just can't get his attention!

TheGriz · 02-06-2018, 09:27 AM

Quote:

Originally Posted by JRTJH

Those are manufacturer markings and aren't the load ratings you're looking for. You'll need to remove the wheel and find the markings on the inside of a spoke. They will look something like these

Dang! You keep me straight John. Back out to the cold! Stand by...

TheGriz · 02-06-2018, 09:54 AM

Ok...after further examination without taking off the wheel, I believe I could make out two numbers stamped on the inside of the spoke next to the "Max Load" stamp...2150 and 2830.

**JRTJH** · 02-06-2018, 10:04 AM

Unless there are other markings that aren't visible (might increase the rating if they are there) it looks like your wheels are rated the same as mine. In 5 hole configuration they are rated at 2150 pounds and in 6 hole configuration they're rated at 2830 pounds. They are the typical ratings for aluminum cast wheels for 15" tires. You're "safe" to consider them with either LRD or LRE tires and PSI ratings up to 80 PSI.

TheGriz · 02-06-2018, 10:08 AM

Quote:

Originally Posted by JRTJH

Unless there are other markings that aren't visible (might increase the rating if they are there) it looks like your wheels are rated the same as mine. In 5 hole configuration they are rated at 2150 pounds and in 6 hole configuration they're rated at 2830 pounds. They are the typical ratings for aluminum cast wheels for 15" tires. You're "safe" to consider them with either LRD or LRE tires and PSI ratings up to 80 PSI.

Exactly what I was looking for John. So I am safe with these wheels for my tire upgrade from LRD to LRE as they are the 6 lug configuration.

Thank again,
Mike

Hodgy · 02-06-2018, 10:11 AM

Gotta like this forum and the knowledge that resides here.

**JRTJH** · 02-06-2018, 10:27 AM

Yes Mike, You're "good to go" with 225 75R15 LRE tires at up to 80 PSI on those wheels as long as they are a 6 lug configuration...

As a "S&G" further explanation, if you look at the Carlisle tire chart here: https://www.carlislebrandtires.com/o...adial-trail-hd

You'll see that those wheels in 5 lug configuration would support the LRC tires (2150 at 50 PSI) but would not support the LRD tires (2540 at 65PSI) and in the 6 lug configuration, the wheels will support all three load ratings (LRC, LRD and LRE).

I haven't seen the "max PSI rating" stamped or molded on any wheels. I've been told that the "standard tire load rating/max PSI charts" all give the same information and that the wheels, if they're rated at 2830 lbs, are also rated at 80 PSI. In the case of the 5 lug model of your wheels, they are rated at 2150 lbs at 50 PSI, so "technically speaking" they are not rated at 65 PSI because they are not rated to support the 2540 pounds so they also aren't rated to support the 65 PSI (even though in 6 lug configuration, they are rated up to 80 PSI)... It's strictly a "what you see is what you get" and you aren't supposed to "read common sense" into the ratings by assuming if one is, the other must be too..... If it's not "on the wheel, it's not rated above what you see".....

Confused yet? I hope not

buvens · 02-06-2018, 11:31 AM

I guess I'm confused.

Do they change out just the center portion of the wheel to get 5 lugs.

Was wondering why they had both weights on them.

I would have thought that would have been more if you are running tandem axles like they show on side of truck or motor home tires..

Just confused like normal

**JRTJH** · 02-06-2018, 11:46 AM

No they don't "change out" anything. The wheel is cast as a single item. After it's cast, the manufacturer drills either 5 lug holes or 6 lug holes in the cast wheel. If they drill 5 lug holes, the wheel is rated to carry 2150 pounds. If they drill 6 lug holes the wheel is rated to carry 2830 pounds.

The difference in ratings is determined by the amount of support the lugs provide to the center of the wheel. With 5 lugs, there's more stress (at each lug position) on the center point/spokes so it can carry less weight at the outer rim where the tire sits. Conversely, with 6 lugs to support the weight, there is more capacity to spread the wheel stress over a greater area and therefore more capacity carried out to the tire surface.

CWtheMan · 02-06-2018, 12:36 PM

Here's a spec sheet for HiSpec wheels. Notice that the wheel's PSI is also limited by the valve stem PSI capacity.

http://recstuff.com/trailer-wheels?g...SAAEgIP7PD_BwE

buvens · 02-06-2018, 01:25 PM

Thanks for the explanation.

That makes sense

MattE303 · 02-07-2018, 04:33 PM

Quote:

Originally Posted by JRTJH

I haven't seen the "max PSI rating" stamped or molded on any wheels.

My SenDel T-08's have it:

**JRTJH** · 02-07-2018, 06:01 PM

Quote:

Originally Posted by JRTJH

...I haven't seen the "max PSI rating" stamped or molded on any wheels.

Quote:

Originally Posted by MattE303

My SenDel T-08's have it:

...Although I have just now seen a picture of a Sendel wheel which does have a max pressure rating of 110 PSI and a max load rating of 3200 pounds and a max pressure rating of 110 PSI. I'd suspect that's not a "standardized wheel rating" (as seen in the tire inflation charts) so, since it's an "exception to the rule" it is marked with maximum PSI.

Now I can change my previous statement and say, "I've seen one brand of wheel with a maximum pressure marking. It does not correspond with any of the information found in the tire load/pressure charts, so it's likely to be an "exception" so it's marked as such.

Thanks to MattE303 for the picture.

ChuckS · 02-07-2018, 08:50 PM

I’m not quite understanding some of the comments on this post...

My Sendel wheels are stamped at 110 psi with a load range of 3750.

So I don’t see how it’s an exception. It’s a fact for my wheels ... they are rated and stamped.

http://sendelwheel.com/wheels/t09sm-1.html

Sent from my iPhone using Tapatalk

CWtheMan · 02-07-2018, 08:51 PM

Personally I don’t know of any highway certified tires that would fit on that rim with a 110 PSI pressure rating. I’m pondering the 6/3200# @ 110 PSI picture. I’m wondering if there are other load and pressure markings on any of the other spokes? I can’t find a T08 with those specs and wonder if it’s there at the request of an OEM supplier?

Anyhow, the wheel is limited by the load it is certified to carry, in this case 3200# max. Maybe that’s why the 6/3200 is on there, for 6 lugs.

MattE303 · 02-07-2018, 09:57 PM

Quote:

Originally Posted by CWtheMan

Personally I don’t know of any highway certified tires that would fit on that rim with a 110 PSI pressure rating. I’m pondering the 6/3200# @ 110 PSI picture. I’m wondering if there are other load and pressure markings on any of the other spokes? I can’t find a T08 with those specs and wonder if it’s there at the request of an OEM supplier?

Anyhow, the wheel is limited by the load it is certified to carry, in this case 3200# max. Maybe that’s why the 6/3200 is on there, for 6 lugs.

sorry for the confusion, yes, there is also a stamp that says "8/3750LBS 110PSI". My wheels are "T08-B1 16X6.0J" and they're drilled for 8 lugs so my understanding is that they max out at 3750 lbs. I replaced the OEM Trailer King tires (max 80 psi) with Sailuns that are rated for 110.

My post certainly wasn't intended to "prove anyone wrong", I hope it wasn't taken that way, I just thought it would be helpful/interesting to know that SenDel is starting to include the PSI information on their wheels. I have no idea whether my wheels are unusual or nonstandard, they are what came stock on my trailer purchased new last year.

CWtheMan · 02-08-2018, 09:34 AM

Quote:

Originally Posted by MattE303

sorry for the confusion, yes, there is also a stamp that says "8/3750LBS 110PSI". My wheels are "T08-B1 16X6.0J" and they're drilled for 8 lugs so my understanding is that they max out at 3750 lbs. I replaced the OEM Trailer King tires (max 80 psi) with Sailuns that are rated for 110.

My post certainly wasn't intended to "prove anyone wrong", I hope it wasn't taken that way, I just thought it would be helpful/interesting to know that SenDel is starting to include the PSI information on their wheels. I have no idea whether my wheels are unusual or nonstandard, they are what came stock on my trailer purchased new last year.

Thank You!

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