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Trailer Wheels, go up a size?

Old 06-10-2019, 01:07 PM
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Default Trailer Wheels, go up a size?

Hi guys, I have trailer questions:

I have a 1989 25ft whitewater with twin 200s. It sits on a dual axle trailer that was "made for the boat" back in 1992 (ish). The trailer honestly looks a little small under the boat to me (but what do I know lol). It has 205/75/14 (6ply) load range C tires on it now, the rear tires look a little stressed and supply of 8 ply (D) trailer tires for 14 inch wheels is a little limited out there. I'm getting ready to replace the hubs and tires but have been contemplating putting 15 inch wheels on it. Have any of you guys out there with heavy, old center consoles and old trailers went with bigger wheels for these reasons? Would it make a positive difference or will I be wasting money? What tires are you running?

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Old 06-10-2019, 01:08 PM
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You are on the right path. Go 15" D rated and get piece of mind.
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Old 06-10-2019, 01:44 PM
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Originally Posted by JAGSARE1 View Post
You are on the right path. Go 15" D rated and get piece of mind.
Yep, better the ply the better weight carrying capacity. Air them up all the way and less heat on the tires too.
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Old 06-11-2019, 05:09 AM
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I can envision fender clearance issues. And while increased capacity tires may give some sense of security, they will not increase the axle weight rating. Get the whole rig weighed then you will have more information for making decisions.
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Old 06-11-2019, 05:52 AM
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You will have a better selection of trailer tires with 15" wheels.

As pointed out, keep in mind that your axle weight rating is not going to change. It looks like you have 3500 pound axles with five bolt hubs for a total capacity of +/- 7000 pounds. Seems light for your boat.

I changed my six lug 15" wheels to 16" wheels so that I could use light truck tires instead of trailer tires. I bought a set of Michelin XPS rib tires and they are so much better than any trailer tires I have ever had. It was a pricey move, but so far it seems well worth it. The trailer is a lot more stable on the highway, tracks better, and I think light truck tires will last much longer. (My trailer has 5200 pound axles.)
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Old 06-11-2019, 06:33 AM
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Originally Posted by doyall View Post
I can envision fender clearance issues. And while increased capacity tires may give some sense of security, they will not increase the axle weight rating. Get the whole rig weighed then you will have more information for making decisions.
A 205/75R-14 is 1 inch shorter than a 205/75R-15, so maybe
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Old 06-11-2019, 06:50 AM
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My Sailfish 2360 CC with twins has 225/ 15s e rated on my Owen's Trailer...no issues and will run less stress as tires will rotate less than 14 inch wheels and more plys... Good Luck
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Old 06-11-2019, 06:56 AM
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I just did this on my triple axle. The 14" tires seemed just good enough for the weight of the boat. I put on a 15" tire and increase the load capacity about 700lbs per tire. The clearance in the fender well is much tighter but I can still get a finger between the rubber and the fender and does not rub when towing. It pulls a bit smoother too.
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Old 06-11-2019, 07:00 AM
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Carlisle makes a load range D tire in your size. Rated for 65 psi, 2040 lb/tire load capacity. Radial Trail HD is the model and has a higher speed rating than standard ST tires. I bought a set over the winter and will see how they perform this year.
http://www.carlislebrandtires.com/ou...adial-trail-hd

Last edited by Cobia 217; 06-11-2019 at 09:39 AM.
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Old 06-11-2019, 07:53 AM
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go to a 70 tire instead of a 75 would accomplish the same thing
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