okay, here's what the VIN plate says:
FRONT~ 13,000lbs Tires~ 12R22.5 Wheels~ 22.5X8.25
DRIVE~ 22,000lbs Tires~ 12R22.5 Wheels~ 22.5X8.25
AUX~ 10,000Lbs Tires~ 12R22.5 Wheels~ 22.5X8.25My question:
Is a 12R 22.5 tire (as spec'd on VIN plate) shorter than a 11R 22.5?
The 11R is definately too tall; rubs on the tag position.
The design of the bus makes it look
as though the tag should be a shorter tire, since there is no wheel well inside the bus above the tag like there is on the drive axel & front axel. However, the VIN plate does show same size tires all the way around. Maybe less wheel travel on the tags?
This is a puzzle for me; I don't understand these tire sizes. Is it possible that the PO put on different (taller) tires so as to change gear rato?
Again, the bus currently has 11R 22.5 tires on front & drive axel; the tags are 10R 22.5. If I put a 11R 22.5 tire on the tag position, there is serious clearance issues with the height of the tire. Is a 12R the same height as a 10R? Seems odd to me.