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What Load Range Tire is Needed for a 10,000 lb Trailer

Question:

I have a 2013 Rockwell fifth wheel, it has 15 inch tires what rating should I be looking for in a tire. Costco offers a c rated tire is that good enough for a 10000 in trailor ?

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Expert Reply:

Load range capacity varies based on the tire size and brand, so without knowing either, it's hard to say. For example, a load range D tire in size 145/80-12 has an average capacity of 1,220 lbs, while a load range C tire in size 185/80-13 has an average capacity of 1,480 lbs. So, in this case, the load range C tire has a greater capacity than the load range D tire. It's best to check the weight capacity of an individual tire to make sure the load range will be sufficient. With a fifth wheel, 15%-20% of your trailer weight will likely be on your hitch, so your trailer tires won't have to support the entire load. Of course, if you do prefer tires that can support a heavier weight, a greater load range certainly won't hurt.

Our 15 inch special trailer tires come in two sizes, 205/75-15 and 225/75-15. Our 205/75-15 tires at the greatest load range have a maximum capacity of 2,150 lbs. Based on the figure 10,000 lbs being your gross vehicle weight rating (GVWR), your tires are more likely size 225/75-15.

At a load range C, the Karrier 225/75-15 tire # AM10251 has a maximum load capacity of 2,150 lbs. If this is the tire size that originally came with your trailer, then this size is likely fine to use.

The load range D tires in this size, such as the Provider Radial Trailer Tire # TTWTRTM2257515, support a maximum load of 2,540 lbs and would certainly be sufficient. Four load range D tires of this size would support a 10,160 lb load.

We also offer a load range E tire, the Westlake Radial Trailer Tire, # LHWL304, which supports a load of 2,830 lbs. Four tires of this size and load range would support a load of 11,320 lbs. This tire also comes with a 5-year warranty and 2-year complimentary roadside assistance.

I'm also attaching a tire FAQ page for you to check out as well as a few video reviews of these tires.

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