Running staggered tires

[JoFotoz]

Yea..NO...not in theory..not even in practice !!

To make the transfer case/TOD work in harmony ...

...front AND rear diff need to be equal.

AND..all tire sizes need to equal.


You have a VERY limited set of options of diff gearing on the 10 & 12 bolt
Isuzu diffs.
( so..the "matching the ratio"...is not possible..you get as close as you can!)

I run 4.77's..It close! for my 35's..but could be better!

If you have different diff front to back..
...you"ll
(A) explode the TOD..
..and
(B)..grenade the transfer case...
and
(C) never get going!..at all!


Please ...do correct me if I'm wrong..
.....but I have re-geared several VX''s

I think I have this right

Jo

[VehiCrow]

Hey All,
So in Short 235/45/18 & 255/45/18
Will have different diameters.
I thought just the width would be different.
I just want to run a little bit wider in the rear then the front.

[Cobrajet]

Hey All,
So in Short 235/45/18 & 255/45/18
Will have different diameters.
I thought just the width would be different.
I just want to run a little bit wider in the rear then the front.

Definitely not the same diameter. Check a few different tire spec sheets on tirerack.com, and you can find out which tires will have the same diameter.

One I checked:
235/45/18 = 26.4"
255/45/18 = 26.7"

By comparison, the stock Bridgestone Dueler 245/60R18 is 29.7".

[Mile High VX]

285/65 18 is 32.6" diameter with a width of 11.22".

265/70 18 is 32.6" diameter with a width of 10.43".

Not sure what might be available in these sizes but the calculator I used said they were the same diameter.

[VehiCrow]

Hey guys thanks for the info.
I guess I will have to do some more digging to match diameters.
Thanks again

[mdwyer]

b) I just remembered that TOD uses individual wheel speed sensors, not drive shaft sensors, so it would still see slip and constantly engage.

I'm not sure this is true. There are wheel speed sensors, but they only feed into the ABS system. I'm pretty sure the TOD speed sensors are completely separate and only on the drive shafts, and it is only able to detect front/back differences.

Doesn't change the fact that it is probably a bad idea to run different sized tires! I'd be curious if tires the same diameter would work okay, though... I just wouldn't be curious enough to do it on MY VX.