Gear Ratio question
Thread Starter
Junior Member
Joined: Dec 2022
Posts: 1
Likes: 0
Gear Ratio question
i have a 2019 f150 with the 3.5 ecoboost. Currently has 3.55 gears and the 10 speed transmission. im adding a 6' and 37s and am debating between 4.56's and 4.88's. anyone with a 10 speed on 37's regear to 4.88 and feel it was too much?
Senior Member
Joined: Nov 2017
Posts: 6,637
Likes: 1,292
From: Washington
There's a bunch of calculators out there. Put some numbers in then change the tire size. Then change the ratio and see what gets you back to where you started. Requires some thinking. No offense. Higher speed means slower acceleration and vice-versa.
https://spicerparts.com/calculators/...rpm-calculator
https://spicerparts.com/calculators/...rpm-calculator
5 Year Member
Joined: Apr 2016
Posts: 3,675
Likes: 1,721
From: Georgia
Tire Size Comparison
Plug in the numbers then scroll down and click on "gear ratio calculator."
Looks like 4.10's will give you a comparable ratio with the bigger tires.
Plug in the numbers then scroll down and click on "gear ratio calculator."
Looks like 4.10's will give you a comparable ratio with the bigger tires.
5 Year Member
Joined: Oct 2011
Posts: 4,028
Likes: 1,083
Tire Size Comparison
Plug in the numbers then scroll down and click on "gear ratio calculator."
Looks like 4.10's will give you a comparable ratio with the bigger tires.
Plug in the numbers then scroll down and click on "gear ratio calculator."
Looks like 4.10's will give you a comparable ratio with the bigger tires.
