Diff Ratio's & tyre size

[Razorback81 Advanced Member Find all posts View Profile Close Razorback81]

how many different diff ratio's are there in a 120 series?

i know mine a 3.9 in a D4D manual

what is in the auto?

what is in the KZ manual
and the KZ auto

and the petrol auto
and the petrol manual



the reason for the questions are
i am shortly needing new tyres and currently have a set of 265/65/17 Dunlop Grandtrek's (Road use as new) & 265/70/17 Cooper AT3 (well used)

changing tyre sizes from 265/65/17 to a 265/70/17 knocks the fuel economy around and is harder to get off the line
then it doesn't like being in 6th

a 245/70/17 is very close to the 265/65/17 (real close)

as i am constantly towing 1st gear is a tad to high to get the whole deal going without being harsh on the clutch when on any incline

i have thought about either 4.1 or 4.3 ratio

thanks James

[mjrandom Out of control poster! Find all posts View Profile Close mjrandom]

Razor I have the old brochures on my computer. This is what they show:





It seems odd that the 1KD standard keeps the same ratios so it might pay for someone with one to check the manual.

That is all that is in the brochure. The 150 brochure does not include those specifications so that will need to come from the manual as well.