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I need to buy some new tires for my trailer. The tire size is 7.5 x 16 LT. I want used tires since it just sits but I cant find used tires this size. Just wondering if anyone knows what tires might also work. I have been reading that 235/85/16 will work but I don't know if that will work for the weight I have. The total weight with boat on it is 19000lbs the boat itself is about 13000 and the trailer is about 6000. There are 6 tires. Any opinions of what to buy or should I just spend the extra money and buy new 7.5 x 16's.
 

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I have E-rated tires that size on my F250. They are specified for a maximum carrying capacity of 3042 pounds each at 80 psi. So, six of them are rated at 18,252 pounds total, assuming the load is exactly distributed and each tire has exactly the maximum load on it.

So, given your numbers, it sounds like they would not be enough.

I think you can find G-rated tires in that size, which might make the cut for your application.

One thing to be aware of: tires age, especially in the sun and especially if they are not regularly used. The common wisdom is to replace tires at six years of age especially when they sit for long periods between use, although a lot of different opinions are out there regarding this topic.
 

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You'll be hard pressed to find a used tire in a 7.5R16. A 7.5R16 is 31.5" tall by 7.5" wide so the closest you can get in a metric tire is a 195/100 R16 which doesn't exist. The tires you have on there are typically for a dual wheel setup. Your best bet is to go with a 235/85R16 which is 9.25" wide by 31.7" tall. You can get that tire in load ranges from D all the way to H. I've got some Goodyear 235/85R16s on my 5er in Load Range G but they run over $300 each. If it really does just sit around a lot then get some retreads from www.TreadWright.com. That size costs $98 each in a Load Range E. You can get away with E rated tires because the entire weight of the trailer is not solely on the axles, you also have pin weight if it's a gooseneck or bumper weight if its a bumper pull. For example a gooseneck rated for 25,000lbs typically only has 8 Load Range E tires on it. That equates to 24,336lbs but it's ok because 20% of the weight is on the truck.
 

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Discussion Starter #4
Thanks for the info. Im still looking around, a tire store by me said they can special order the same tire for around 180 a tire. I might go check out a junk yard but will prob do the new route since i dont want dangerously old tires.
 
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