4.6 diff versus 4.3

[TheFlyingBadger]

Yeah, I think I understand what you are trying to explain. You get less of an engine brake with 35" than with 31" on a given gear and steep angle down a hill. I think the reason is 35" goes further on the ground per turn of the wheel than 31", making the engine braking slightly less effective.

Correct..

RB30, 1st Gear, Std Low Range @ 2500rpm

Diff Ratio	Tire Size	Speed (km/h)
4.375	31	12.63
4.375	35	14.26
4.625	31	11.95
4.625	35	13.49
4.880	31	11.32
4.880	35	12.79
5.130	31	10.77
5.130	35	12.16

RB30, 1st Gear, 43% Reduction Low Range @ 2500rpm

Diff Ratio	Tire Size	Speed (km/h)
4.375	31	8.92
4.375	35	10.07
4.625	31	8.44
4.625	35	9.53
4.880	31	8.00
4.880	35	9.03
5.130	31	7.61
5.130	35	8.59