Hi everyone, I am interested in learning about weight-limited carriers. I have a few questions that I'm hoping someone can answer.

1) Can anyone tell me what kind of rims and tires are typically run for 18-wheelers that run at the 80,000 lbs limit? (e.g. 22.5x8.75 and 11R22.5?)They are both common sizes.

2) Can anyone comment on the pros and cons of running a 22.5 x 8.25 rim vs. a 22.5 x 9.00? When would one rim be more advantageous than the other?helps control the tire width and how much bulge the sidewall will have. Similar to different width in a car. The 8.25 will hold the beads in more and keep it narrower.

3) I've heard of a 22.5 x 11.75 rim, that's kind of an oddball size. Can anyone tell me what applications would fit a 22.5 x 11.75 rim?sounds like a floatation steer tire

there is also the 24.5 size tires as well.
for the rims the aluminum type are best due to weight reduc. the steel rims weigh more and tend to cause problems with trying to scale say a 45600lb load. w/ full tanks of fuel etc.