D or E load range?

[davidz71]

I had planned on ordering 16" aluminum wheels and the BF Coodrich Commercial T/A 225-75-16 LRD tires in late April but one of the other threads mentioned that a call to their dealer said the D range was no longer available. I might be able to have my local dealer find 4 tires but if not, I'm worried that the LRE tire would be a little tough on my '86 Sovereign. If I went with them then what would the appropriate tire pressure be? I couldn't see running them with more than 60-62 psi. I currently have 2 C rated Marathons, 1 D rated Marathon and one D rated Maxxis which replaced a C rated Marathon in October. The C rated Marathons are early 2000 and the D rated is a 2001. This is why it is time to replace them. Should I try to locate the D rated Commercial T/A's or just go with the E rated T/A?

[Bob Thompson]

Hi Craig, I just went to the B F Goodrich website and sure enough, they only list LRE tires in the size you indicated. In fact, they also list a 15" tire, but no longer list any LRD tires! I would definitely go with the "E's" because if you were ever to damage a tire, you would beable to get an E replacement. Also, reducing the pressure as you indicated seems logical and appropriate.

[jkcru]

I'm on my 2 set of commercial TA 15" on stock alum rims and have not had a single problem . First set was changed because of age , over 10 years and still showing no signs of deterioration.

[Action]

tigki2 were those rims the origional 1976 Airstreams ?

[HowieE]

Originally Posted by davidz71

I'm worried that the LRE tire would be a little tough on my '86 Sovereign. If I went with them then what would the appropriate tire pressure be? I couldn't see running them with more than 60-62 psi.

If you inflate E tires at the proper pressure there will be no ill effects on your trailer. Weigh your trailer and use the manufactures inflation chart to find the correct tire pressure. Do not inflate E rated tires to the pressure printed on the side wall of the tire. That pressure is for a fully loaded tire. In the case of my 265 75 16 that I run on my trailer that would be 3415 per tire @ 80 lbs. or a trailer weight of 20,490 lbs.

I will post the Goodrich chart in a few days as they are putting one in the mail to me today.

[ticki2]

Originally Posted by Action

tigki2 were those rims the origional 1976 Airstreams ?

Yes , they are original

[ticki2]

Originally Posted by jkcru

I'm on my 2 set of commercial TA 15" on stock alum rims and have not had a single problem . First set was changed because of age , over 10 years and still showing no signs of deterioration.

Gee , this sounds like my post , and mine is gone ?????

[TomW]

Originally Posted by ticki2

Gee , this sounds like my post , and mine is gone ?????

Apparently, swift Action was taken to make sure the thread conforms to forum guidelines.

I did not, however, see your post, so I have no idea why it is missing. The thread IS a little disjointed without it.

Tom

[ticki2]

Originally Posted by TomW

Apparently, swift Action was taken to make sure the thread conforms to forum guidelines.

I did not, however, see your post, so I have no idea why it is missing. The thread IS a little disjointed without it.

Tom

Tom , it is my post with the wrong name, your missing jkcru's post. Also the thread title when I posted was tires,tires tires. Has someone combined threads?

[lewster]

On the topid or LRD vs. LRE tires, I switched my Marathons (D) for a set of BFG Commercial T/A LRE tires before last summer's trip and I had NO problems or issues. I Just like having real truck tires on the CCD which also just happen to match the tires on the Sprinter TV.

[TomW]

Originally Posted by ticki2

Tom , it is my post with the wrong name, your missing jkcru's post. Also the thread title when I posted was tires,tires tires. Has someone combined threads?

I saw the post.

I was wondering who "tigki2" was since there were no other posts before your post that helped me figure it out.

Tom

[davidz71]

Originally Posted by ticki2

Tom , it is my post with the wrong name, your missing jkcru's post. Also the thread title when I posted was tires,tires tires. Has someone combined threads?

ticki2,
The moderators moved my posted question under "tires, tires, tires" to a thread of it's own. I was concerned that with the D rated Commercial T/A tires no longer available that the E rated would be a little harder on my 25' trailer.

Lewster,
I was thinking about the psi vs load chart as a possible guide but wasn't sure if airing down from 80 to 60 would be too much for the sidewalls thereby causing heat/early tire demise.

[Action]

Originally Posted by ticki2

Gee , this sounds like my post , and mine is gone ?????

It was your post. Sorry in moving the posts to create this thread I lost your post and had the question. So the least I could do was at least post the question.

Sorry I lost the original.

The reason I moved these posts from the original thread was the original thread was several years old and 10 pages long. So anyone wanting this data may have to drill down 10 pages to get to this relevant question. The thread starter gets more attention this way and answers to questions is what this forum is all about.

Again sorry for the mix up.

>>>>>>>>>>>>>>>>>Action

[ticki2]

I figured that's what happened , had me laughing , there are just day's like that .

[Beginner]

I talked with the Michelin customer service guy at length and a couple other of my contacts in the tire industry.
All say that as long as we don't put more than 65 PSI in the LRE tire we will have the same ride as the LRD with 65 psi. According to the Goodrich chart (which will probally be a Michelin chart, both the inflation/load charts Goodrich sent me were Michelin load/inflation charts) you can even drop down to 60 or 55 psi, HOWEVER, KNOW HOW MUCH WEIGHT YOU ARE PUTTING ON EACH TIRE AND DON'T OVERLOAD IT.
Notice your car tires. If you wear out both sholders, the tire is underinflated. If you wear out a strip in the middle the tire is overinflated.
Same applies here.
But if you put more than 65 PSI in a LRE tire you will beat the crap out of your trailer as evidenced by things moving around, missing rivets etc.
I run mine at 60 PSI and things have stopped moving. I can go to 55 safetly because I know how much weight is on each wheel.
Beginner

[HowieE]

Here is the tire chart for light truck metric tires.

Sorry for the illegibility but I am suppling it just to deminstrate the range of tire pressure for a given tire. Any manufacture will supply this chart upon request.

The 225 75 16 D rated tire depending on load can be inflated from 35 psi with a 1445 lbs load to 65 psi with a 2205 lbs load. Depending on your weight per tire you would select a tire pressure.

[Beginner]

Don
Here is a chart that is a little easier to read.
If you request the RV tire info book from either BF Goodrich or Michelin you get the Michelin book.
That book breaks up the tires by rim size primarily, not name of tire.

Look at this location:

Michelin North America RV Load & Inflation Tables

Beginner