Converting triaxle to spread axle

I've got a line on alot of cheap tri axle 53' flatbeds and I'm wondering is there is a standard axle spread spacing on those where removing the center axle would make it a legal tandem spread?

 

The standard setup is 10 ft 4 in.

Some trailers are 8.2

 

Standard spread is 10ft 1 inch

 

Find the weight and measures chart for your state or states you run. I think 10ft 2in gets you 40k and as your spread goes down in length so does the weight

 

You're right. 2 inches.

 

8.4 is 38
9.3 is 39
10.2 is 40.

If you're 8.3 or less. 34.