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Old 08-19-2015, 02:26 AM   #1
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3850RL Tires and Rims

Our 2016 3850RL is about two weeks old and has ST235/80R16E Marathon tires. Probably should have ordered unit built so I could get the Good Year G614 RST tires, but the unit came from dealer stock so I'm looking to replace the marathons. The question is are the rims currently used for the Marathons able to handle the 110 psi of the G614. I believe the specifications may be on the rim someplace but in the interest of not pulling the wheel I thought I'd ask on the forum.

Also, is there another G rated tire as an alternative to the G614?
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Old 08-19-2015, 08:47 AM   #2
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Well, I ordered the same Cardinal but I made sure that I had the 614s. What does the cold air pressure have printed on the outside of the tire that you have on camper?
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Old 08-20-2015, 09:21 AM   #3
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For the marathons it states 80 psi. for 3420 lbs load
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Old 08-20-2015, 09:39 AM   #4
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I checked that out for my 2015 Sanibel but its wheels and tires are provided by Tredit for the Cardinal I think the wheels and tires are provided by Lionshead. I had to go to the wheel provider to secure this information in my case Tredit for the T109 wheel. As others have stated the Marathons tires have a load rating of 3420 pounds at 80 PSI. The T109 wheels that came on my unit have a 3750 pound rating and can run 110 PSI. So in my case I would be able to run the G614 tires on the original wheels Hope this helps you.
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Old 08-20-2015, 09:39 AM   #5
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Well, you got the bull by the horns...good luck
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Old 08-20-2015, 03:47 PM   #6
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Look at Sailun tires. Also call Scott at trailertiresandwheels.com for good info on bigger tires. 419-272-2277
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Old 08-20-2015, 08:55 PM   #7
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Thank you everyone for the info.

Bigdaddy1 - seeing you ordered the 3850RL with the G rated tires - a couple of questions please. I know they installed four G614s on the RV, but what did they provide as a spare another G614 on a plain white rim? Secondly, on the yellow sticker on the side of the RV what pressure did they recommend running them at? 110 psi?
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Old 08-20-2015, 09:54 PM   #8
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I believe you are correct on the spare but just have not looked very close to it but will tomorrow. I do run about 100 to 105 psi cold in the tires. I will again look at the sticker on the camper in the am. We have only took one trip to the smoky mts and one quick trip to a nearby park but really like the new camper and the tires, when I check them, run cool to the touch.
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Old 08-21-2015, 08:35 AM   #9
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I have a 2015 cardinal model 3825 with the goodyear g614 tires on it. they are LT tires with load range g. they have max psi of 110 stamped on them. I tracked down the rims and they are from stendel and are rated 3750 at 110 max psi. this is all good. but the stickers on the trailer refer to ST tires that are load range e and a max psi of 80. with all the discussions about tires how can forest river offer the upgraded tires and NOT put an upgraded inflation sticker on the trailer. when I picked up the trailer the dealer showed me the sticker and said to inflate to 80 psi. this is wrong based upon the tires that were actually installed. so far very pleased with the goodyear tires!
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Old 08-22-2015, 01:18 PM   #10
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After posting my question on the rims, I did some more research. Pulled my spare and stamped on the inside shows it is rated for 3750 lbs. The spare tire is a Rainier ST E rated but I will change it also. The main axle rims are Sendel 16x6 T109, rated at 3750 Lbs. Bottom line - rim are good to go just need the load range G tires.

Just posted as others may be wondering what the final answer was.
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