Size in LEGO
42030 in Hauler build. Length 52cm, width 17cm, height 22,5cm. Body, tires, warning beacon. I used a ruler on mine.
42114 in Hauler build: Length 60 or 61cm, width 23cm, height 22cm. Body, mirrors?, warning beacon?.
How about IRL?
42030 Hauler IRL. Length 10 218mm, width 2 859mm, height 3 451mm. Body, tires, exhaust pipe. Cabin roof 3 318mm.
42114 Hauler IRL: Length 12 225mm, width 3 884m m, height 3 852cm. Body, tires, cabin roof.
A25F: Unloaded machine with 23.5 R25.
A60H: Unloaded machine with 33.25 R29.
So I would guess the scales of the machines are not the same in LEGO.
No B model for 42114? Interesting model, but economy might very well sadly say: Pass. Cheaper non technic models taking the priority.
/edit: The 42030 in Hauler mode has 1 axle less than the IRL machine.