There are a lot of garbage calculators on the web.

Tire companies tell you how many rev/mile their tires turn. That is the
spec to use for calculating gearing. If your calculator used a raw tire
size instead then it is probably garbage.

BFG says their 195/75/14 tire is 815 rev/mile
BFG says their 215/75/15 tire is 748 rev/mile

Mark

Ralph Meyermann wrote:
> It was showing me that the only ratio difference of the two was the ring
> and pinion. The tire size is 27.8 on the bfg and 25-26 on my 195/75/14?
>
> Velma 82 1.9L AAZ td westy
> On Feb 10, 2014 1:17 PM, "Ralph Meyermann" <ralphmeyermann@gmail.com> wrote:
>
>> I was using the transaxle ratio/tire size calculator thing to make my
>> reference from. Is it not that accurate?
>>
>> Velma 82 1.9L AAZ td westy
>> On Feb 10, 2014 1:14 PM, "mark drillock" <mdrillock@cox.net> wrote:
>>
>>> Stock DK tranny and 195/75/14 tires in 4th at 3500 is 65.6 mph
>>>
>>> Stock DZ tranny and 195/75/14 tires in 4th at 3500 is 51.4 mph
>>>
>>> Stock DZ tranny and 215/75/15 tires in 4th at 3500 is 56.1 mph
>>>
>>> Mark
>>>
>>>
>>>
>>> Ralph Meyermann wrote:
>>>
>>>> Hi Volks, I may have another silly idea. I am planning on having my
>>>> diesel
>>>> ratio transaxle rebuilt with a 1st and second ratio change to a 4.13 and
>>>> 2.25 if my memory is correct to aide pulling my small fishing boat out of
>>>> the water. My silly idea is that with 215/75/15 bfg all terrains matched
>>>> to
>>>> my diesel ratio transaxle is about the same as my dk transaxle with my
>>>> 195/75/14. I was thinking that when I'm bringing the boat camping I will
>>>> run the 14" wheel package to take some load off the engine/transaxle  and
>>>> when I am not bringing the boat Ill use the big wheel package to gain
>>>> some
>>>> hwy speed? It's so crazy, it just might work??
>>>> Velma 82 1.9L AAZ td westy
>>>>
>>>>
>