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Old 01-12-2019, 09:36 PM   #11
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Wow so much great info! Glad we signed up for this forum! We just got our rig pre owned like new in August and hit the road in October for a year and still learning so much. You have all been such a huge help- thank you!

Paul & Ashley
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Old 01-12-2019, 09:40 PM   #12
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Don't mistake Goodyear Marathon trailer tires for Goodyear Endurance trailer tires...

The Marathons have been discontinued due to being a China bomb tire!
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Old 01-12-2019, 10:04 PM   #13
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I went from a 225 75r 15D Transmasters (they were 9 years old) and replaced them with 225 75r 15E Maxxis and put in steel valve stems. The original tires were 65 psi and the maxxis could be ran at 65 or 80 psi at 65 psi the weight rating was the same as the originals 2150 and at 80 psi they were higher rated 2830. I noticed the difference right away as the trailer seems to track behind my truck better. The axles in my trailer are rated for 6000lbs each and the dry weight of the trailer is 8780lbs so the factory tires were running close when I was loaded for use at 11025lbs. now I feel that it is much safer because the tires are now more than my max. weight.
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Old 01-13-2019, 07:19 AM   #14
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Originally Posted by 67L48 View Post
No. Definitely not. The max load your trailer can carry is based on the frame, axles, and some other things. This weight is clearly listed on your ratings sticker you'll find on your trailer. Increasing tire load ratings does not increase the max load your trailer can carry. Your trailer's weight ratings do not change as you increase your tires' load ratings.

Good luck.
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What you really meant to say was that going to E-rated tires from D tires will carry the weight of the trailer better...

E-rated tires will not give the trailer more weight carrying capability.

The reason for this is that the RV makers put just enough tire to barely carry the load that the trailer and axles are rated for without giving any extra safety margin for tire strength.
You are both right. What I was trying to say is what JohnD10 said.

I guess I shouldn't have replied to this thread after working six days and then drinking six beers!
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Old 01-13-2019, 02:35 PM   #15
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Just to let you all know. Last July I replaced all of my tires with Goodyear Endurance tires. Yesterday I was on I-95 and the tire minder said the right front tire low. Stopped and checked it and it was showing 52 lbs. Aired it up to match the other three and got back on I-95. Three miles later I had a blowout. Got to check on the tire insurance I added at the time of purchase.
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Old 01-13-2019, 02:54 PM   #16
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Just to let you all know. Last July I replaced all of my tires with Goodyear Endurance tires. Yesterday I was on I-95 and the tire minder said the right front tire low. Stopped and checked it and it was showing 52 lbs. Aired it up to match the other three and got back on I-95. Three miles later I had a blowout. Got to check on the tire insurance I added at the time of purchase.
Did you check the tire for a nail or other road damage before airing it back up?
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Old 01-13-2019, 03:29 PM   #17
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You might need different valve stems to handle the extra pressure. I'd recommend metal stems in case you want to ever do a tire pressure monitoring system.
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Old 01-13-2019, 03:40 PM   #18
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Did you check the tire for a nail or other road damage before airing it back up?
Yes I checked the outside and tread area but not the inside wall. Wondering if it had a bubble on it. At least it didn't tear half the side off the unit.
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Old 01-13-2019, 04:11 PM   #19
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Another benefit, in my case anyway, is potential better fuel mileage. I replaced my OEM ST235/80 R16/ E rated tires with ST235/85 R16 Load range G (14 ply rating) 110max psi.
Not only did I increase my weight carrying safety margin for the tires (these are rated at 4400 lbs each) but my fuel mileage increased, on the same trips, from 10.5 mpg to nearly 12 mpg. a better than 10% increase.

These tire were so stiff and heavy that it took two tire techs and a good machine to get them mounted. I don't expect to ever need another trailer tire on this camper.
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Old 01-13-2019, 04:14 PM   #20
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Hi all,
I am sure this question has been answered like a million times here but even performing a search and reading some posts with similar sounding titles I donít think I have gotten the answer I am looking for.
Our 2016 28-foot Sabre Lite lists the tires as ST225/75R15/D. We are looking to replace the tires but almost every dealer we talk to carries only ST225/75R15/E for our specs. I have read on some other forums that stepping up from D to E is fine as long as the tires are the same size, but I notice that the psi jumps from 65 to 80 between D to E. My question is should I be concerned about installing a set of E rated tires that our wheels/axles will not be able to handle the increased pressure? If yes is there a way to check whether they can?

Discount Tires is also really into suggesting their in-house Hartland brand. Secondary question: are they good? Specs seem comprable to Goodyear but they seem like they have very few reviews online.

Thanks in advance!
Paul & Ashley
Way. Get rid of D go to E. But don't let tire guy sell you some house brand or no name brand probably made in China just like the junk it came on your trailer tires. Carlisle Es Great for me on your own training and enjoying the insurance on the new trailer . Both are heavy duty tires both are so much better than what they sold on the trailer.
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