Several practical examples on how to work out a percentage increase should illustrate the use of relative growth calculations in various applied scenarios.

An abnormality in tire tread wear can also mimic a worn wheel bearing and this is easily checked. I assume this has been done. Another possibility could be a failed motor mount which could set up a quirky vibration. (Check the dog bone mount under the hood on the passenger side top. That’s the most common failure and easily fixed if a problem.)

For what it’s worth, I’ve had bad hearing for decades for a variety of reasons and as a mechanic I’ve had to focus more on attuning myself to the feel of a problem rather than the audible end of things. So yes, you can determine many faults by feel instead of with the ears.

Another way to check for a worn bearing is with the tire off the ground, place your hand on the strut spring. Now slowly rotate the tire. If the bearing worn, the roughness of the bearing will be transfered into the strut spring where it can be felt.

I’d go ahead and replace the half shaft that has the torn boot. It’s likely the CV joint is damaged from lack of grease and dirt and water getting to it.

One is to jack the vehicle up so that tire is off the ground. Grab the tire at the 12:00 and 6:00 oclock positions and try rocking the top and bottom of the tire in and out to check for play in the bearing. If the tire rocks that bearing is worn.

I asked my younger brother who was in town for business to drive my car tonight to see if it was making any noise. Sure enough it was. My brother said it was roaring loudly from the front end driving from 25 MPH to highway speed. More scary now since I can’t hear that and not know if it will break on me… I think this is more definite confirmation the CV axles are about to disintergate on me so I will have them replaced this week and post back on if it was the culprit.

Having now heard that it’s producing a “roaring” sound, I too think it sounds like a bearing. However, you know you need half-shafts anyway, so I’d do those first and see how it feels.

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In this example use case of our percent increase calculator, you have bought a property worth $500,000 and now its valuation has increased to $550,000 and you want to know what the percentage increase is. You divide the new price by the old price: $550,000 / $500,000 = 1.1, then multiply by 100 to get 110, then subtract 100. The final result is that your property value has increased by 10% over that time period via its gain in value to the amount of 50,000 USD.

Finally, consider an hourly pay example. If your current rate is $20/h and you are offered a 10% increase, your new hourly rate can be calculated like so: $20 + $20 * 10 / 100 = $20 + $20 * 0.1 = $20 + $2 = $22. That is an example of adding 10 percent to a number. On the other hand, if your current hourly rate is $20/h, and you are offered $22/h, what is that in percentage change? Using the formula, we get 22 / 20 * 100 - 100 = 1.1 * 100 - 100 = 110 - 100 = 10% increase in pay.

where new is the newer quantity or measure, and old is the older (or original) quantity or measure. It can be used to calculate the percentage by which one number is larger than another.

Many folks misdaignose problems as tire related when they are actually bearing and CV joint related. I think Busted is right - especially about not waiting to get this looked at.

Failed wheel bearings do indeed make noise, can sound like snow tires at high speed…As Knuckles said, you can jack up the wheels one at a time and FEEL & LOOK for play in the wheels…

First, consider an example of a salary percentage increase. Say your salary is $50,000 and you were offered a salary hike amounting to a 20% increase of your current pay. To calculate your new salary after the raise do: $50,000 + $50,000 * 20 / 100 = $50,000 + $50,000 * 0.2 = $50,000 + $10,000 = $60,000. This adds 20% to your salary.

I have a question…I have a '03 Toyota Camry with 4 cyl and auto trans. This has 118k miles. I’m wanting to know what symptoms bad wheel bearings will give. Why? I am Deaf and obviously can’t hear. I know there’s a way to test for bad wheel bearings by wheel but I’m wanting to know if can do it by feeling? Whenever I’m driving between 40-50 mph, I get a very fine humming feel on my steering wheel. I can sense if there is a wheel out of balance but this doesn’t feel like it…my steering wheel feels like a vibrating sander, you know? Just wondering if that means bad wheel bearings or something else? Thanks!

Anytime I suspect a bad wheel bearing I jack up the suspected corner of the car and try to wiggle the wheel while watching for play in the hub area. Just the wheel moving could be a sign of a bad ball joint or tie rod end, but if it’s moving in the hub area it’s the wheel bearing. If you have an infrared thermometer check the temperature of the wheels after driving a few miles. If a wheel bearing is bad usually there will be a significant amount of heat transfer to the wheel. If you check the temperature by hand be careful, I’ve seen wheels get extremely hot from a bad wheel bearing. I actually saw the hub and wheel on my father in laws truck smoking from the heat of bad bearing one time and the lug nuts were so hot I couldn’t touch them.

Sometimes a starting, or original quantity, measure, or price is known and one wants to estimate what it would become after it is increased by a given percentage. To increase a number by a percentage, use the formula:

Ok thanks for the diagnosis. Can it be determined how much it would cost to replace wheel bearings in my area (Knoxville, TN)? Should it be inexpensive? Thanks.

The feelings you describe certainly seems like a wheel bearing. However, worn-out brakes can also cause this feeling. Worn-out brakes typically feel worse when braking-however. If the feeling only seems to get worse when turning, I think you are on the correct track in assuming a bad bearing.

In another example, say you have been approached with an opportunity for a new job and they offer you a yearly wage of $60,000 instead of your current $50,000 salary. What is the percentage increase from the difference of $10,000? We plug the numbers into the first formula above to get $60,000 / $50,000 * 100 - 100 = 1.2 * 100 - 100 = 120 - 100 = 20% increase. You can verify this using this online percent increase calculator.

where base is the starting amount (starting number) and % increase is the percentage to increase it by. The above formula would be used for a price increase, pay increase, or salary increase calculation. Let us see some concrete examples to explore how it works.

Roaring is usually a sign of a bad wheel bearing and as it get worse will usually turn into a popping or grinding noise, at this point they’re usually on their last few miles.

Use this percent increase calculator to calculate the result from a percentage increase by any amount. Easy to use as a percentage growth calculator for your salary, business, or investment. Increase a number by a percentage (add X% to a number).

The best way to test for a bad bearing is to jack up the wheel from the suspected axle side and do a manual feel test. If the properly mounted wheel can be wiggled up and down and side to side, this is a sure sign the wheel bearing has failed. If the wheel bearing is simply worn, but holding, the wheel should be removed, the brake pads removed, and the axle spun by hand. A good wheel bearing with allow the axle to spin smoothly with some small amount of resistance. If you feel any roughness in the spinning motion, the wheel bearing is probably bad.

Say you are running a small business and you have an average revenue of $20,000 per month by serving 20 customers a month, and you want to increase your revenue by 20%. How many new customers would you need? You need to multiply 20 by 20% and add 20, so that is 5 + 20 = 25. So you would need to serve 5 more customers to a total of 25 customers per month, in order to achieve revenue percentage growth of 20%, assuming that revenue per customer stays the same.

Yes, that would be the problem. In all likelihood, that joint needs repairing/replacing. Common repairs often fail (seems to be the consensus from this thread), and since you’re now feeling a humming, that implies there’s some damage to the joint itself. Your best bet, at this point, is to replace the axle with a new or rebuilt unit. Again, the consensus here is that rebuilt shafts don’t work all that well, nor last that long.

Percentage increase is a useful thing to calculate when comparing time periods, estimating growth percent (yearly, monthly, daily etc.), or comparing a new state to an old state of things, e.g. a new salary or hourly rate, versus your previous one. The formula for calculating percent increase used in our percentage increase calculator is:

Ok now…I jacked up the front of the car and did the “12:00 and 6:00” method. Both wheels are tight and snug. I did the hot wheel temperature and both wheels are cool to the touch. With that, I could have ruled out wheel bearings. Now I decided to take a look under the right front corner. And I found the CV joint boot had thrown grease from the boot all over. I think the CV joint is the culprit. Could a bad CV joint cause all this vibration and humming sound?

Roaring is usually a sign of a faulty wheel bearing, not a CV joint. If this turns out to be a wheel bearing I would suggest replacing both sides if possible

In another situation you might see a price on an item, but it doesn't have tax (e.g. VAT) included. The price is $10 and you know that there is a 20% tax, and you want to know the final price you need to pay after the price increase due to the added tax. Using a percent increase calculator you will quickly find that the final price is $12. The price increase amounts to two dollars. Or you can use our specialized VAT calculator instead.

I can confirm for you that a bad CV joint can manifest itself as a 'buzz saw" vibration in the steering wheel. As can other things.

If the right CV joint is bad, I will go ahead and replace the left one too since it probably isn’t far behind. I just would like confirmation that a bad CV joint can cause all this? Thanks for your advice!

If you'd like to cite this online calculator resource and information as provided on the page, you can use the following citation: Georgiev G.Z., "Percentage Increase Calculator", [online] Available at: https://www.gigacalculator.com/calculators/percent-increase-calculator.php URL [Accessed Date: 01 Jan, 2025].

The bottom line is that you’ve searched properly for the source of the vibration, you’ve found that you need new half-shafts, so go ahead and fix that first, then see how it feels.

I’m not sure who it was (Caddyman? Keith? Someone else?) who had a link for replacement shafts that aren’t much more than rebuilds, but seem to be much more reliable. Hopefully they’ll pop on soon and post the link for you.

Just to let you know, I’ve worked on cars for over 20 years, and most of the problems I encounter are determined more by feel than by sound. While I can hear problems in cars as they are pulled up, determining the cause of the sound almost always comes down to feeling for the problem. If you are unable to determine the cause of the vibration yourself, please let a mechanic look it over for you. The feeling your describing appears to be coming from the wheel/hub/suspension components none the less, and a failed component in this area is very dangerous and can lead to loss of control.

In another example, say you have, on average, 20 new clients per month. However, in December you got 30 new clients, and you want to tell what that is in terms of percentage growth. Of course, it is easiest to use our free online percentage increase calculator, but if you choose to do the math by hand, it is 30 / 20 * 100 - 100 = 1.5 * 100 - 100 = 150 - 100 = 50%. A growth of 10 clients represents a fifty percent increase in the number of new clients.