Full Answer
What does the gear and tire size chart show?
The chart lists the gear ratio and tire diameter to easily guide your purchase into the correct size application. Please note that if your vehicle is equipped with an electronic speedometer, the vehicle will have to be reprogrammed for the gear and tires sized. Having the speedometer read accurately is important both on and off the road.
How many times does the driveshaft rotate to turn the tires?
NEW! - Need help with this calculator? Check out the new comments section below! Your axle gear ratio determines how many times your driveshaft rotates for every full tire rotation. For example, a 3.73 gear ratio requires 3.73 driveshaft rotations to turn your tires once around.
What is the correct gear ratio for my car?
Most cars and trucks with low rear end ratios will take a 15 tooth drive gear. There are two driven gear housings, one for 34 through 39 tooth driven gears and one for 40 through 45 tooth driven gears.
How do you determine the rear end ratio of a tire?
In effect your tire has two diameters. To determine your rear end ratio, raise both tires off of the ground, turn both tires at the same time one complete turn, at the same time count the turns of the drive shaft, this is your ratio. Variables such as the vehicle’s axle ratio and tire diameter affect the accuracy of the speedometer.
What is the best gear ratio for 33 in tires?
While 4.56 is ideal for 33" tires and 5-speed transmission, the 3-speed auto's lack of an verdrive makes 4.10 the best all-around street and offroad ratio.
What is the best tire size for 3.73 gears?
With 3.73s, you would need to use a 30" max tire, and with 4.10s you would use a 33" max tire height.
Are 3.73 gears good for 33 tires?
With 3:73 gears and 33" tires you are fine.
Can 3.73 gears handle 35s?
You will be fine. Just gonna lose mpg and slow your truck down. I have run 35s with 3.73s and no issues at all. In fact, my recent Plat had a 4-inch lift, heavy 34.5 inch Nitto Trails, and 3.55 gears, and ran great!
Can you run 37 inch tires on 3.73 gears?
37s on 3.73s will do more damage than good. You'll definitely need to regear to 4.88s or 5.13s. You'll also want to have a front D44 or beef up the D30 if that's what you have.
What gear ratio do I need for 40 inch tires?
For those huge 40 inch tires, 4.56 gears would be much better than 4.10. Actually, if you want to keep the RPM vs speed the same as the factory setting with those 40 inch tires, you would need something like a 4.90 gear ratio.
How do you gear a Dana 44?
0:0553:01How To Re-Gear a Dana 44 - YouTubeYouTubeStart of suggested clipEnd of suggested clipWay. Take an old cone that you cut off your other bearing use that as your press that way yourMoreWay. Take an old cone that you cut off your other bearing use that as your press that way your bearing spins freely doesn't get damaged. Press it.
What's the difference between 373 gears and 410 gears?
4.10s are going to accelerate faster and decelerate faster on lift. However the trade off is greater fuel consumption per mile driven and higher engine speed per given road speed. In basic terms the 4.10s will feel quicker and 3.73 will feel faster.
Should I Regear my Jeep?
Regearing your Jeep is a crucial step in adjusting the size of your tires since improper gearing can result in more stress being transferred to the axle. In all likelihood, when you left the lot in your new Jeep, your drivetrain and gearing were set to provide a balance between torque and speed.
How many tooth drives does a truck have?
Most cars and trucks with low rear end ratios will take a 15 tooth drive gear. There are two driven gear housings, one for 34 through 39 tooth driven gears and one for 40 through 45 tooth driven gears. Look at the bottom of the speedometer face for the numbers 940, 960, 1000, or 1020.
How to determine rear end ratio?
To determine your rear end ratio, raise both tires off of the ground, turn both tires at the same time one complete turn, at the same time count the turns of the drive shaft, this is your ratio . Variables such as the vehicle’s axle ratio and tire diameter affect the accuracy of the speedometer.