Recommended Replacement Tires for Boat Trailer with 165/70-12 Tires

Question

Question:

I have a 20 year old trailer and need new tires Size is. 165/70/12 What do I use to replace

asked by: Darryl

0

Expert Reply:

For your boat trailer, I recommend using a 145/80-12 to replace the 165/70-12 tires that you have on your trailer now. This new size will only be slightly narrower and about the same diameter as the tires you have now so there will be no fit issues with this new size.

I recommend the Kenda Karrier S-Trail part # AM10140 which has a radial ply so it will be great for highway trips and it has a two year warranty. As long as your trailer/boat does not weigh more than 1,520 lbs multiplied by the number of tires you have then this will be an excellent replacement option for you.

expert reply by: Conner L

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Answer 1

Hey Jon! We do have a 175/80D13 bias trailer tire with a 5 on 4-1/2 in a galvanized finish. It is the Loadstar item #AM31242. This is a load range D tire with a 1,660 lbs capacity. We do not have a galvanized wheel with the 10 circle pattern. If you…

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Answer 2

Thanks for all of the measurements! Since from the center of the hub to the top of the fender is 13" you will may run in to interference issues due to the increased height of the ST175/80D13 tires being 2-1/4" taller than your 5.30-12…

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Answer 3

We do have tires that will work for you, although tires that are size 155R12 are likely automotive or light truck tires, so there isn't a direct replacement of that size for trailer tires. A tire that is very close in size is 145/R12, and I…

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Answer 4

Hey John, since you have a 5 lug 12 inch wheel currently and want to upgrade to a 13 inch wheel what you really only need to do is match the bolt pattern of what you have to the new wheel you are looking for. Most likely it's the very common 5 on…

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Answer 5

The smallest diameter 13 inch trailer wheel and tire will have a diameter of 24.1 inches (ST175/80-13). There are 3 common 12 inch trailer tire sizes: 4.80-12 has a diameter of 20.5 inches, 5.30-12 has a diameter of 21.9 inches, and 145/80-12 has a…

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Answer 6

Hey Kelley, thanks for reaching out! Yes, you'll want to change something up. We recommend having around 4" of clearance above the tire to account for suspension flex, so since you only have 1" that's probably why the previous owner…

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Answer 7

Generally speaking you will want to have 3 inches minimum from the top of your tire to the fender of your trailer to accommodate for suspension travel. Having a little more wouldn't hurt, but I wouldn't recommend any less than 3 inches.…

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Answer 8

Hello Mark, thanks for getting in touch. The 145/R12 tires and the 4.80-12 are similar but not exactly the same size. The 4.80-12 tires are 4.9" wide and 20.7" in diameter when fully inflated. The 145/R12 tires are going to be about…

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Answer 9

The closest we have to the 19-1/4" length is the 3-Leaf Double-Eye Spring #SP-072275. It is 18-5/16" from eye center to eye center on the double eye spring. I have included the rest of the measurements below so that you can compare with…

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Answer 10

Hey Sam; thanks for the question and yes it is possible to go from a 3,500 lb torsion axle to a spring leaf axle on your boat trailer. You'll need to have new hangers welded on, as well as get leaf springs and, of course, the axle itself. For the…

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Answer 11

If the trailer currently uses double-eye spring suspension then you will want to use slipper spring hangers if you want to switch spring types. Double-eye hangers would not work in the manner you have described because the shackle bolts are not large…

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Answer 12

The most likely scenario you are experiencing is that the previous owner of the trailer installed a new tire size that is larger than the size that was originally equipped and the fenders are designed to be used with. Therefore, you are experiencing…

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Recommended Replacement Tires for Boat Trailer with 165/70-12 Tires

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