P185-80 tires OR ST185-80 Tires - Page 2 - Fiberglass RV
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Old 08-08-2023, 09:06 PM   #21
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Name: Amelia
Trailer: Hunter Compact II
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Red face Sources?

I'm looking for a pair of ST185-80B-13's myself....with a 4 lug it's proving really difficult! Where does everyone source their tires??

I have to buy one 4 lug since my trailer came mismatched with someone putting a 5 lug on one side... I'm fairly intimidated by the thought of getting a tire on the wheel by myself so I'd like to go to a shop that can handle the install and even give my frame and wheel bearings a check up.

I'm in PDX/PNW btw!
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Old 08-09-2023, 06:48 AM   #22
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Amelia, It's not possible to install a five bolt wheel onto a four bolt hub. Be sure that the bolt pattern (number of wheel studs and the circular spacing of those studs) on the trailer match the metal wheel rim you intend to use.
Trailer wheels (metal) and tires (rubber) are frequently sold with the tire mounted, but they are available separately as well.
Almost any tire repair location can dismount an old tire and put a new tire on that 13 inch diameter rim size (whether 4 or 5 bolt pattern). It's the smaller diameter 8 and 10 inch trailer rims that aren't common automotive size and may require searching out someone with the equipment to go that small.
If you are planning to visit a trailer specialist shop for a check, ask if they have recommendations on tire and/or wheel replacement.
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Old 08-09-2023, 08:47 AM   #23
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That tire size is readily available, though not many tire shops will keep it in stock. The lug pattern is irrelevant. All that matters is wheel diameter and width. Make sure you’re getting a good quality ST tire, not a passenger “P” radial. I like the Carlisle Radial Trail HD, available in your size in both C and D load range (6- and 8-ply equivalent).

Take it to a tire and wheel shop. They have the equipment to install the tires and they can evaluate your mismatched hubs.
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Old 08-13-2023, 08:36 PM   #24
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Though China made, Carlisle makes a pretty good tire. they carry the ST185/80R13 in both load range C and D (go with the D).

Hankook Tire (a Korean company) has recently got into the trailer tire market and in the Vantra Trailer line they have your size also. Hankook is OEM tire supplier for Ford trucks, so they know a thing or two about tires.

Stay away from other oddball name China made tires.

Your first order of business is to get the 4 lug hub changed out to a 5 lug to match the other side and after making sure that you have good brakes and bearings, consider getting a set of 14 inch rims and tires provided you have the space in the wheel well for a taller tire.

Charles
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Old 08-22-2023, 09:57 PM   #25
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Name: Clayton
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Quote:
Originally Posted by CharlesinGA View Post
Though China made, Carlisle makes a pretty good tire. they carry the ST185/80R13 in both load range C and D (go with the D).

Hankook Tire (a Korean company) has recently got into the trailer tire market and in the Vantra Trailer line they have your size also. Hankook is OEM tire supplier for Ford trucks, so they know a thing or two about tires.

Stay away from other oddball name China made tires.

Your first order of business is to get the 4 lug hub changed out to a 5 lug to match the other side and after making sure that you have good brakes and bearings, consider getting a set of 14 inch rims and tires provided you have the space in the wheel well for a taller tire.

Charles

On a trailer that weighs less than 2000lbs, would having the D rated tires should you run them at the 50PSI they can run or leave it as the 35PSI that the C rated ones are listed at? Would 50PSI shake my trailer to pieces?
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Old 08-23-2023, 09:12 AM   #26
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Originally Posted by spidermoore View Post
On a trailer that weighs less than 2000lbs, would having the D rated tires should you run them at the 50PSI they can run or leave it as the 35PSI that the C rated ones are listed at? Would 50PSI shake my trailer to pieces?
B-rated ST tires take up to 35 psi. C-rated tires take up to 50 psi and D-rated tires up to 65 psi. E-rated go to 80 psi. And yes, I would run Cís at 50 psi. I donít see a compelling reason to run Dís on a 13íer unless it is unusually heavy (new ones especially).
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Old 08-31-2023, 09:20 PM   #27
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My thinking is to have the heavier carcass of the D load range and using ST tire inflation vs weight charts, you would use the same pressure you used with a C rated tire. Many tire manufacturers have stopped making tires in the lesser load range varieties.

Charles
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Old 08-31-2023, 09:40 PM   #28
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My Trillium 4500 has passenger car tires on it. They are only to be inflated to 35psi.

Would moving to ST tires at 50 psi have a positive impact on fuel economy? It seems that theoretically it would.
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Old 09-01-2023, 12:35 PM   #29
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after load rating be sure to check speed rating
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