Thanks for the pics!!! I'll have to check into some of that 2x4x3/16...

Maybe 4x5 is a little too big

 

definitly go with 3/16 i built one out of 1/8 and it is all dented and warped after a year, im gona build a new one this month heres some good links for ideas, that im gona follow.

https://www.yotatech.com/forums/f88/...ild-off-48077/
http://www.wildyoats.com/swing_out_tire_carrier.htm

 

It will depend on your type of wheeling.

I built my sliders out of 1/8" steel. It was in no way strong enough.

I have literally broken my kickouts off, not at the weld, but actually torn the metal in half. I also, this past weekend, warped my slider into the body. It didn't pull off the frame, but the front outrigger and main beam bent.

1/8" is too thin to accommodate hard hits. Moderate wheeling and protection will be fine.

I'm bumping up to 1/4".