To check your gear ratio without pulling the cover off of your vehicle, you’ll need to measure the circumference of each tire and compare it to the size of the driven gear. The driven gear is usually located on the differential, and its size will be listed in your owner’s manual. To get an accurate measurement, use a tape measure to find the distance around each tire at its widest point.
Once you have that number, divide it by the size of the driven gear. This will give you your final drive ratio.
- Park the vehicle on a level surface and set the emergency brake
- Place a jack under the differential and raise the vehicle until the wheels are off the ground
- Spin each wheel by hand to see if there is any resistance
- If there is, this indicates that the gear ratio is not correct
- Remove the differential cover and count the number of teeth on each gear
- Compare these numbers to determine the gear ratio
How to Check Gear Ratio on Open Differential
Differential gears are an important part of your vehicle, and if they aren’t working properly, it can cause all sorts of problems. One way to tell if your differential gears are wearing out is to check the gear ratio. To do this, you’ll need a few things:
-A tape measure
-A friend or family member to help you
-A mark or sticker to put on the ground (this will be your starting point)
First, find a level spot on the ground where you can park your car. Put the mark or sticker on the ground in front of one of the wheels, then have your helper get in the car and hold down the brake pedal while you measure from the mark to the center of the wheel hub. Write down this measurement.
Next, have your helper slowly let off of the brake pedal while you measure from the mark to the center of the wheel hub again. Write down this second measurement. Finally, divide The first measurement by The second measurement – This is your gear ratio!
Ideally, you want a gear ratio between 2.73 and 3.42.
Credit: www.moderndriveline.com
What is the Easiest Way to Determine Gear Ratio?
There are a few different ways that you can determine gear ratio, but some methods are more accurate than others. The most accurate way to determine gear ratio is to use a Gear Ratio Calculator. This tool takes into account the number of teeth on both the ring and pinion gears to give you a more precise answer.
Another way to determine gear ratio is by using a formula. This method is not as accurate as using a calculator, but it will still give you a general idea of your vehicle’s gear ratio. To use this method, you need to know the number of teeth on both the ring and pinion gears.
Once you have this information, you can plug it into the following formula:
Ring Gear Teeth / Pinion Gear Teeth = Gear Ratio
For example, if your ring gear has 30 teeth and your pinion gear has 10 teeth, your gear ratio would be 3:1.
You can also determine your vehicle’s gear ratio by counting the number of rotations that the driveshaft makes in one complete revolution of the wheels. To do this, put your vehicle in neutral and jack up one of the rear wheels so that it is off the ground.
How Do You Check Gear Ratio by Turning a Tire?
There are a few different ways that you can check your vehicle’s gear ratio by turning a tire. The most common way is to use a tool called a “gear ratio calculator.” This tool is available online and in many auto parts stores.
You will need to know the size of your tires, the number of teeth on your ring and pinion gears, and the revolutions per mile (RPM) of your drive shaft. With this information, the calculator will be able to tell you what your gear ratio is.
Another way to determine your gear ratio is by using a tape measure.
First, find out the circumference of your tire by measuring it from one end to the other (across the tread). Next, divide this number by 3.141592654 (pi). Now take this resulting number and multiply it by the number of teeth on your ring gear.
Finally, divide this last number by the number of teeth on your pinion gear. The resulting answer will be your gear ratio.
One last way to determine your vehicle’s gear ratio is quite simple but requires some basic math skills.
Start by counting how many times the drive shaft turns in one mile.
How Can You Tell the Difference between a 3.73 And a 4.10 Gear Ratio?
If you’re not sure what gear ratio your car has, it’s probably because the sticker with that information is long gone. Or, if you just bought a used car, the previous owner may have removed it. Fortunately, there are a few ways to figure out your gear ratio without too much trouble.
The easiest way is to simply look up your car’s make, model and year online and find the factory gear ratios. However, this won’t work if your car has been modified or if the previous owner changed the gears.
Another way is to jack up one of the rear wheels and spin it while counting how many times the driveshaft turns.
Then, count how many times the wheel turns. The first number is your drive (ring) gear ratio and the second number is your axle (pinion) gear ratio. For example, if the driveshaft turns 3 1/2 times for every one turn of the wheel, then you have a 3.50:1 drive ratio.
To get your final gear ratio, divide the ring gear by the pinion gear like this: 3.50/1 = 3.50 finalgearratio .
How Do I Find Out What Gear Ratio My Car Has?
If you’re wondering how to find out what gear ratio your car has, there are a few ways you can go about it. One is to look up your car’s specifications in the owner’s manual or online. Another is to physically measure the circumference of each tire and divide that by the number of teeth on the driven gear (i.e. ring gear) inside the differential.
Doing this will give you your car’s overall gear ratio.
Keep in mind that there are different gear ratios for different purposes – engine RPMs, fuel economy, acceleration, etc. – so it’s important to know what you’re looking for before beginning your search.
Once you have an idea of what gear ratio you need or want, finding it should be a relatively simple process!
Determining Rear Gear Ratio Without Removing Cover
Conclusion
If you’re wondering how to check your vehicle’s gear ratio without pulling the cover, there are a few things you can do. First, if you have an automatic transmission, you can put it in neutral and then look at the odometer. The reading on the odometer will tell you what your current gear ratio is.
If you have a manual transmission, you can also put it in neutral and then use a tape measure to measure from the center of the drive shaft to the center of the rear axle. The number of inches that this measurement is will tell you your current gear ratio.
