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Hi Frankie, I just answered a simular question a couple weeks ago and posted the thread link below. Read that for axle placement plus some other ideas. To add a thrid axle would not solve the problem as you now have your trailer center of gravity out of balance. Tri-axle trailers do not make the best equipment trailers. Due to the suspension linkage design, you can apply reverse torque to the pin of the trailer as the trailer moves over uneven terrain. There's no easy way to stop this problem. From what I see one would have to redesign the suspension linkage and then a big "if" it would correct the problem. The other problem that occurs with tri-axles is the rear axle scrubs the ground while turning. With a heavy load, I've seen my rear tires sidewall start to fold under the wheel in a tight turn. I could see where I could pop a tire off the wheel if I wasn't careful. This tire scrub problem also occurs with tandum axles but not as bad. Dual tandum axles is a lot better design with less problems vs a tri-axle design. T_Bone
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