Changing Boat Tires From Size 5.30-12 to Size 175/80R13
Updated 07/17/2017 | Published 07/14/2017
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Question:
I have to replace the axle on my Trail Star boat trailer. Original tires/wheels were 5.3 x 12 Bias Ply. Would rather go with a 13inch wheel and 175/80/13 Radial tires. As long as I have the extra clearance, do you think it is a good idea??
asked by: Jim B
Helpful Expert Reply:
Provided that you have enough clearance, changing from your Bias 5.30-12 size tire, like part # AM30859, to a Radial 175/80R13, like part # AM31994, could definitely have its advantages and is a good idea.
Bias tires are designed for more of an off-road application, like farm use, because they have a much more rigid sidewall. A Radial tire is built so that it has little bit of flex in it to help make the ride a little smoother plus it runs cooler than a Bias.
To ensure that the bigger size tire will fit you will want to make sure that there is 4-5 inches of space between the tire and any fender that you have, and then at the minimum 2 inches between another tire (for tandem axle trailer) or the sides of the fender. Your 5.30-12 size tire has a diameter of 21.9 inches and the new 175/80R13 size tire will have a diameter of 24.1 inches meaning that it will be 1 inch closer to any fender or tire. You will also want to make sure that the bole pattern on your wheel matches that of your new axle. The part # AM31994 that I referenced comes with a wheel that uses a 5 on 4-1/2 inch bolt pattern.
I have also attached a link to our selection of axles that you can look through for a correct fit. If you are wanting to go with a standard axle then you will want to make sure that it is the correct length and that the hub-face-to-hub-face (A) and the center of the spring seats (B) have the correct measurements as well (see attached picture).
A great way to eliminate a lot of the measuring and adjusting that accompanies the installation of a standard axle is to go with a set of our Timbern Axle-Less Suspension systems instead. They are much easier to install and they help improve ground clearance as well. They are included in the link for the axles.
Product Page this Question was Asked From
Kenda 5.30-12 Bias Trailer Tire with 12" White Wheel - 5 on 4-1/2 - Load Range D
- Trailer Tires and Wheels
- Tire with Wheel
- Bias Ply Tire
- Load Range D
- 5.30-12
- 12 Inch
- K - 65 mph
- 5 on 4-1/2 Inch
- Steel Wheels - Powder Coat
- Kenda
more information >
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