What is the Current Trailer Tire Size to Replace 78-14 Tires

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Question:

Have 178/14 tires need to now that radial replacement size Thanks

asked by: Ken

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Expert Reply:

The 78-14 tire size is an old designation. Depending on the letter that is in front of the 78 it could be a 205/75-14 (F78 or G78) or a 215/75-14 (H78 or J78). The capacity of the existing tires would also help identify the size needed.

The difference between these two sizes is that the 215 is 0.4 inches wider and 0.4 inches taller than a 205. I have included links to all of the radial tires in both sizes for you.

expert reply by: Michael H

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Answer 1

There are a couple of different size modern equivalents to the 78-14 tire size. But for an H78-14, you would need to use an ST215/75-14, see link. If you just want tires, we have bias tire #AM1ST90 and for a radial we have #AM10229. Make sure not to…

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Answer 2

The correct metric size for the F78-14 tire size is an ST205/75-14 tire size. The part #AM1ST86 that you referenced will work as a replacement, but since this is a bias ply tire the part #AM10234 would be a better choice for you. The prices are…

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Answer 3

The tire size designation H78-14 is comparable to the current metric size 215/75-14 and all ten of our tires and tire/wheel combination products in this size appear on the page I linked for you. Tires of size 215/75-14 have an overall diameter of…

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Answer 4

The B78-13 tires you mention convert to metric size 175/80-13. The 175/80-13 tires are available in three load ratings. B: 1100 lb at 35 psi C: 1360 lb at 50 psi D: 1610 lb at 65 psi You would choose the load rating based on the capacity of your…

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Answer 5

From the research I did it looks like your H78-14 tires are 27.8 inches in diameter. Which the closest size we offer that is compatible is the ST215/75R14 like Karrier ST215/75R14 Radial Trailer Tire #AM10229. This tire has a diameter of 26.8 inches…

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Answer 6

We have the exact tires that you need to replace your old dry-rotted tires, but to answer your last question, the number of axles (and therefore the number of tires) does play into load rating. Each tire has its own rating, and the way it works is…

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Answer 7

The B78-13 ST tire size translates to a ST175/80-13 size tire. The overall height of the ST175/80/13 tire is 24 inches and the overall width is approximately 7 inches. A popular replacement tire would be the Karrier ST175/80R13 Radial Tire, #AM10199.…

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Answer 8

Hey Molson, the H78-14ST tire size is the same as the 215/75-14 like the part #TTWTRTM2157514D.

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Answer 9

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

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Answer 10

Hey Bryan, that's a good question. The pricing can definitely be misleading, but I wouldn't use it to judge the quality of the tire. A lot of that comes down to promotions, inventory, and whether you're looking at a tire by itself or…

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Answer 11

The 5.30-12 tires, being wider, are going to make more contact with the road. This means that the noise, and heat build up will be higher than a 4.80-12 tire but the rolling resistance will actually be less because the tire is larger diameter. The…

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Answer 12

It sounds like you are speaking of the wires for the brake magnets. If this is correct, you will need to connect one of the wires to the brake controller output wire on your trailer connector and the other wire will need to be grounded to a clean…

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What is the Current Trailer Tire Size to Replace 78-14 Tires

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