[Festus2]

While a single, long 5 ft length of 2x8 might sound like a good idea, I think most folks use two shorter length boards to accomplish the same thing and put one short board under each wheel. The problem with one long board is storage and weight.

I use cedar because it is light and withstands rot. I cut my lengths long enough so that the tire just sits on it with a bit of overhang. I also have cedar lengths of 1x8 since, in some cases, one side doesn't need to be raised 2 inches. These short lengths are stackable, easily stored in the back of the PU and lightweight.

Some folks might have a different system but these work for me. I also have the yellow lego pieces but prefer to use the wooden boards.

I always raise both axles the same amount.