Thread: Changing Ratios

Originally Posted by Mr Whippy

I am planning on putting 265/75 tyres on my Td5. I would like to get my gearing similar to what it is with standard tyres.

I have done a bit of searching and found that I cannot fit a defender transfer case.

Can I fit the gear set from defender? Which is better, change diff ratio or transfer?

I have done it again. This was supposed to be in D2 forum. Mods please move. Must be old age setting in

Are you sure the Defender transfer case will not fit? I have a mate who put a Deefer tfr case into his D2 - straight swap, no drama's.

I run 265/75's (and have done for 11 years on a D2 and now D2a) and have not changed the gearing. Slight loss of power and harder on brakes but I like the lower cruising rpm's and lets face it, we do a lot of cruising in the vast country of ours.

That being said, I run two sets of tyres - one set with standard tyres.

I have D2 TD5 with a small lift and remap. After changing tyres from 235/70/R16 to 235/85/R16 it looks like some horses in engine has died. No problems on highways, but a bit hard on clutch when take off, and a bit too fast in low range in harder offroad. With auto-gearbox, it will be much less visible.
As I'm planing to fit air lockers, I'll also change the diff ratios from stock 3,54 to KAM 3,8 (or Ashcroft 3,75). Some gyus here has fited GBR 3,9, but all has developed a whine noise after some years of use.