19.5" ratio calculation help

[Fear This: Cummins!!]

Could someone tell me what the effective rear end ratio would be on my '13 DRW Aisin with 4. 10 rears and factory 17" tires would be if I were to switch to 245's in a 19. 5" wheel? I think it would be close to 3. 73's. I know a few of you on here know how to calculate this.

Thanks, Jared

 

[DAN V]

Go to 4lo.com I think that website will allow you to punch in your #'s and will tell you what you need.

 

[Wertles]

Iirc, when I switched them on my SRW, it ended up going from 4. 10 to a 3. 89.

 

[KL7J]

Could someone tell me what the effective rear end ratio would be on my '13 DRW Aisin with 4. 10 rears and factory 17" tires would be if I were to switch to 245's in a 19. 5" wheel? I think it would be close to 3. 73's. I know a few of you on here know how to calculate this.

Thanks, Jared

If you use Firestone or Toyo brands at 624 revolutions / mile versus your existing 634. 15 tires, then your effective axle ratio will be changed 1. 6% or will be about a 4. 03:1 ratio.



The difference between a 3. 73 to a 4. 10 is 9. 66%.