Yes, you are correct. I have 17" on the truck.
I don't understand why they are putting these big tires on the new trucks.
I have been looking at a new truck. One just like mine has went to 18" tires. Can't get it without them. So until something changes on that issue I will be driving what I have.
How much high in the nose is your rig? 5 in. clearance is the bare minimum.
You will have watch pretty carefully if you get into any situation where the ground is suddenly not level.
When you change from 15 to 16 to 17 to 18 and larger rim size your circumference of the tire does not change unless you change tire size 75 to 85 to 33 to 305 etc
When you change from 15 to 16 to 17 to 18 and larger rim size your circumference of the tire does not change unless you change tire size 75 to 85 to 33 to 305 etc
I went from 15 to 16 on the trailer and it raised my trailer enough to level everything out.