How do I tell what gear ratio my Vin is?
How to Find Out the Gear Ratio With the VIN Number
- Find the VIN of your vehicle. It can be found on the sticker on the inside of the driver’s side door or on a stamped metal plate embedded in the dashboard above the steering wheel.
- Identify the VDS section, the fourth through eighth digits of the VIN.
What is a 3.31 axle ratio?
Consider that with a 3.31 axle ratio, the driveshaft turns 3 1/3rd times for every revolution of the rear wheel. With a 4.30 ratio, it turns 4 1/3rd times for every revolution of the rear wheel. The numerically higher gear ratio (in this case, 4.30) increases wheel torque and improves acceleration from low speeds.
How do you find the gear ratio on a spinning tire?
Rotate the marked tire one revolution while counting how many times the driveshaft rotates. eg, If your driveshaft made 3 3/4 revolutions, that would determine a 3.73 gear ratio. If you get approximately 2 3/4 revolutions, you have a 2.76 gear ratio.
How do you determine the gear ratio on a spinning wheel?
The number of driveshaft rotations will help you determine your rear axle ratio. For example, if it turned 3 and a half times, it’s a 3.50:1 ratio. If it turned 4 and a quarter times, it’s a 4.25:1 ratio. For better accuracy, turn the wheel 20 times and divide by 2 for your rear axle ratio.
Do front and rear axle ratios have to match?
Final drive ratios must be the same. A diff doesn’t have a ratio and is always the same, ie, One wheel stopped, the other side twice the speed. All diffs are the same. Any difference in final drive ratios front to rear will cause failure unless a centre diff is running the DIFFERENCE of speeds.
What gear ratio do I need for 31 inch tires?
Gear Ratio And Tire Size Calculator
| 3.31 | 4.27 | |
|---|---|---|
| 30″ | 2410 | 3109 |
| 31″ | 2332 | 3008 |
| 32″ | 2259 | 2914 |
| 33″ | 2191 | 2826 |
How much does tire height affect gear ratio?
generally 1 inch in tire diameter eqauls 1/10 gear ratio, so a 1 inch shorter tire would put the gearing at 2.83.
Do taller tires affect gas mileage?
For example, larger tires decrease your fuel economy because they are heavier, while smaller tires increase fuel efficiency. Bigger tires also have a higher rolling resistance than smaller tires which means they require more resistance and effort to get them rolling.
Will taller tires lower rpm?
Yes. A larger tire has a greater circumference. So the wheel turns fewer revolutions to go the same distance as a smaller tire.