I was wondering about gear ratio's and was looking at Fritz web site, tire sizes etc, auto's with 3. 54/4. 10 etc.
A CTD with a auto and 3. 54 gears at 59 MPH is at 1600 RPM.
A CTD with 4. 10 gears at 1600 RPms is at 51 MPH, a 8 MPH loss.
Now, figuring that a 4. 10 takes 8 MPH from a CTD at 59, a 3. 73 rear ratio would take 4MPH from a 3. 54?..... ?( Approx>>>not exactly)
So would the same differance be applied
by changing tire sizes( from the chart on Fritz)
from a 265/75/16 to a 225/75/16 would lose approx 4 MPH???
The MPH Vs. RPM change the same, but one is only changing tire dia?
I want to make sure this would be in essence, the same as a gear change but not, and only a tire dia change.
Is this right or ?????
Thanks in advance.
__________________
1997 3500 Dually CC, Emerald Green 5 speed,(Comp Stand trans 5th gear upgrade )) 4:10 , Reese 15K 5th hitch, "MOPAR GUY"-BHAF, Jacob E-brake, gutted cat, Mag-Hytec rear end cover,Rancho RS 9000, KDP fixed,#11 plate,50 Gal aux tank
2000 Quad cab 4x4 auto Mag-hytec DD trans pan,K&N air filter, Knerf bars. More on order
Yes it would be the same as a gear change
A CTD with a auto and 3. 54 gears at 59 MPH is at 1600 RPM.
A CTD with 4. 10 gears at 1600 RPms is at 51 MPH, a 8 MPH loss.
Now, figuring that a 4. 10 takes 8 MPH from a CTD at 59, a 3. 73 rear ratio would take 4MPH from a 3. 54?..... ?( Approx>>>not exactly)
So would the same differance be applied
by changing tire sizes( from the chart on Fritz)
from a 265/75/16 to a 225/75/16 would lose approx 4 MPH???
The MPH Vs. RPM change the same, but one is only changing tire dia?
I want to make sure this would be in essence, the same as a gear change but not, and only a tire dia change.
Is this right or ?????
Thanks in advance.
__________________
1997 3500 Dually CC, Emerald Green 5 speed,(Comp Stand trans 5th gear upgrade )) 4:10 , Reese 15K 5th hitch, "MOPAR GUY"-BHAF, Jacob E-brake, gutted cat, Mag-Hytec rear end cover,Rancho RS 9000, KDP fixed,#11 plate,50 Gal aux tank
2000 Quad cab 4x4 auto Mag-hytec DD trans pan,K&N air filter, Knerf bars. More on order
Yes it would be the same as a gear change