Then, after a couple weeks, still felt like they could be better, so I was headed on a road trip to Florida and stopped by a Discount Tire in Stockbridge on my way out.they said "Tires were out of balance significantly".had them rebalance them.got about 2 miles down the road, here we go again.so, found my sweet spot at about damn near 90mph and got to Jax Florida. I initially got the tires and wheels mounted by Discount Tire.didn't like balance, took it back. The other potential issue, is that if you were to have this special balancing done, you could never rotate your tires.wow, tire shaving? yeah, thats pretty extreme. Most likely if it fixed their issue, it was because the real problem didn't get caught when they were balanced the first time. The other potential issue, is that if you were to have this special balancing done, you could never rotate your tires. This removes tread however, and I can't recommend it for 99.999% of issues, but every once in a while it is a viable option. There is one on-vehicle thing that works great, even for heavily out of round tires and that is on-vehicle shaving of the tires. Again, thanks for the eat info!Most likely if it fixed their issue, it was because the real problem didn't get caught when they were balanced the first time. So, the high speed thing is sham? There is no benefit to balancing on the car with all the other spinning components like hubs and rotors factored in? Some people on the net have sworn by it to fix their issues, even folks with slightly bent wheels? But then again, we all know if it is on the internet, its gotta be true lol. I did see them use the five finger simulator thing also. The road force did not detect an out of round tire or a defect, but like you said, it may not catch it. Thats some great feedback.thanks! i am getting my rotors handled tomorrow by my mechanic and see if that fixes my brake pulsation as well as non braking vibration.the slight vibration comes and goes, its really strange. In some instances, I have seen warped rotors cause a vibration even though the brakes have not been applied. The simulator has 5 cone shaped fingers that simulate the force of 5 lug nuts pushing on the wheel lug holes. The proper way when having this sort of problem is with the appropriate sized cone on the spindle behind the wheel and tire, and a 5 finger simulator on the front. It is also very important that the wheels/tires are being mounted to the machine properly. Neither are very fun to do with low profile tires, so many techs are reluctant to do it, but, thats how you get results. Sometimes its a matter of switching a tire from wheel to wheel, sometimes its a matter of turning the tire on the wheel its on. The road force machine mentioned above (Hunter GSP9700 and its variants, 9710, etc) are very good at finding these tire issues, though it is only as good as the tech using it. This can lead to the tire slipping around the wheel. Extra is used on low profile tires to make them easier to install and less likely to be damaged. One other potential issue I have seen is that when a tire is mounted, a soapy, water based lubricant is used to mount the tire. Also, I've seen problems getting very low profile tires mounted completely and properly on the wheels. Just because they are new doesn't mean they are good. That being said, however, I would bet your problem is tire related. Some vehicles are very sensitive to over sized wheels and tires. Just because it spins faster doesn't make it any less balanced, however, it may make an imbalance more noticeable. If a tire/wheel assembly is balanced at 30 mph, it is also balanced at 60 mph. All balancers spin at relatively the same speed. There is also no such thing as a high speed balance. I have proven this theory many times when co-workers argued against me. The reason a balancing machine is calibrated is because it makes it more accurate in where it tells the technician to put the weight. the farther the weight is away from the center, the more it affects the balance, thats why wheels and tires are balanced off the car - because the stuff that stays on the car just doesn't matter.Ĭalibration on a machine is not something that can just randomly be off. Sadly, they don't come from rotors that are out of balance - the weight is too close to the center and doesn't affect shake unless it is very very far out of balance. Vibrations can come from all sorts of things, including rotors. I'll give you a few years of experience here to help ya out. Just because the machine says the tires are fine doesn't mean that they are. On the car balancing = waste of time and money.
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