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Old 09-28-2020, 04:50 PM   #1
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Larger tires on 5th wheel

Thinking of putting new tires on our 5th wheel. Stock tires are 235/80/R16. Would there be any benefit to going to 235/85/R16? Looking at Goodyear Endurance. My current tires are more than adequate for my trailer when loaded. But I am towing a little "Nose High". The 1/2" increase in height might help. (Or not).
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Old 09-28-2020, 06:38 PM   #2
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1/2" in overall tire height is just a 1/4" raise at the axle centerline / trailer frame .

How much , nose high are you ?
What's the clearance at the truck box rail ?
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Old 09-28-2020, 06:40 PM   #3
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With a std leaf spring suspension on the trailer you need a 1" minimum between the tires per Dexter and 2 3/4" at the top of the wheel well for clearance issues.
Its a good upgrade if they have proper clearances.

The 235/85 are around 1" taller than the 235/80s = around 1/2" gain.
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Old 09-28-2020, 06:56 PM   #4
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Here is one tire issue most don't think about. The tire diameter & how close the tire is to the link shaft for the slideouts.

Check this before going larger & taller.
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Old 09-28-2020, 10:10 PM   #5
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Skip426....about 2-1/2" nose high and clearance of 5" above bed rail
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Old 09-29-2020, 06:29 AM   #6
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Originally Posted by Liteman View Post
Thinking of putting new tires on our 5th wheel. Stock tires are 235/80/R16. Would there be any benefit to going to 235/85/R16? Looking at Goodyear Endurance. My current tires are more than adequate for my trailer when loaded. But I am towing a little "Nose High". The 1/2" increase in height might help. (Or not).

I have done this. If you have the clearance go for it. I am probably closer to 4-6" nose high on my rig so I might have some suspension work done this winter to gain me another 2-3". Once I do that I should be able to drop the hitch down a notch & get much closer to level. While these newer trucks might look tough with the extra height, it sure makes hooking up to a trailer more difficult.
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Old 09-29-2020, 07:42 AM   #7
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I have done this. If you have the clearance go for it. I am probably closer to 4-6" nose high on my rig so I might have some suspension work done this winter to gain me another 2-3". Once I do that I should be able to drop the hitch down a notch & get much closer to level. While these newer trucks might look tough with the extra height, it sure makes hooking up to a trailer more difficult.
You do not state what 2500 truck you have, but I stick to the Tradesman models because they have the most payload and least height. They also have the smaller tires, which means less truck height. My 2008 WolfPack 295WP rides pretty level on my 2020 RAM 3500 Tradesman DRW. Perhaps smaller size tires are an option next tire change?
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Old 10-01-2020, 06:36 PM   #8
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Originally Posted by Liteman View Post
Thinking of putting new tires on our 5th wheel. Stock tires are 235/80/R16. Would there be any benefit to going to 235/85/R16? Looking at Goodyear Endurance. My current tires are more than adequate for my trailer when loaded. But I am towing a little "Nose High". The 1/2" increase in height might help. (Or not).
If your trailer is in need of new tires due to age or tread wear then buy new tires how ever I would suggest upgrading to Sailun 637 load range G tires and skip the big bill for basicly the same tire. Most load range E type ST trailer tires are garbage with the final vote on the Endurance line not in yet. Doo your home work you will find the Sailun tires are very heavy duty and will carry the weight others cant .
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Old 10-01-2020, 09:52 PM   #9
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The tires are not causing the nose high condition. I suggest you find and fix the trailer/tow vehicle connections.
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Old 10-05-2020, 08:55 AM   #10
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Originally Posted by Liteman View Post
Thinking of putting new tires on our 5th wheel. Stock tires are 235/80/R16. Would there be any benefit to going to 235/85/R16? Looking at Goodyear Endurance. My current tires are more than adequate for my trailer when loaded. But I am towing a little "Nose High". The 1/2" increase in height might help. (Or not).
The half inch added axle height is just that, a half inch. The only ways to level the trailer is to lower the tow vehicle, adjust the hitch height or put a lift kit on the trailer axles. The larger 85 profile tires have advantage of greater load capacity and a higher speed rating. Good luck.
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Old 10-10-2020, 10:09 AM   #11
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I personally would make the change if it were my rig and you have the clearance. When you step up to the 85 series tire, you can upgrade to 14 ply tires, and that is a wise decision.
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Old 10-11-2020, 10:52 PM   #12
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Quote:
Originally Posted by Liteman View Post
Thinking of putting new tires on our 5th wheel. Stock tires are 235/80/R16. Would there be any benefit to going to 235/85/R16? Looking at Goodyear Endurance. My current tires are more than adequate for my trailer when loaded. But I am towing a little "Nose High". The 1/2" increase in height might help. (Or not).
With a 12,000# GVWR I would seriously look at going with LT 235/85-16E light truck tires. I run LTs on our Copper Canyon with a 12,360# GVWR.
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Old 10-12-2020, 07:47 PM   #13
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With a 12,000# GVWR I would seriously look at going with LT 235/85-16E light truck tires. I run LTs on our Copper Canyon with a 12,360# GVWR.
Good move.
A 12k gvwr trailer of any type doesn't need a load G tire at 4480 lbs capacity. Not the best idea.
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Old 10-13-2020, 07:39 AM   #14
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You can never have too much tire. Within reason.
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