Quote:
Originally Posted by golemslord
Hi,
I recently notice a vibration/pulsation in the gas pedal starting from a very low speed (to highway speed). It is more noticeable when just resting the foot on the pedal. When I shift it to neutral, the problem is still there. The car drives very smoothly and I do not notice any vibrations elsewhere aside from the pedal
The wheels and tires were mounted for a month or so without problems until recent weeks. I have tried installing hub centric rings but no luck in fixing the issue.
However, the vibration sometimes disappears for a very little bit when driving on very smooth pavements.
Any suggestions on what I should do? I was thinking of getting the tires balanced next in hopes of solving this mystery.
Tires are Falken Azenis FK510 with 80% tread. Both the wheels and tires are around 1 year old
Thank you
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You have taken some good steps and understand your frustration. There might still be a few things worth checking, starting from cheaper to more expensive checks since you mention vibration while rolling (I assume) in neutral.
IMO, balancing is very important. I've had cars with heavy vibration, which I thought was mechanical, but due incorrect balancing (balance only on one side of the wheel). The issue can also be aggravated by tires that get damaged by potholes or tires left flat or with low tire pressure for extended periods of time during storage (might not be your case), deforming tire. You might be able to pick up wheel and or tire deformation looking at wheel/tires from different angles while they are being sped up on the balance checking machine. These issues might not be fixed by balancing alone.
You might also look into wheel bearings. They wear out slowly, which might make diagnosis difficult due to the gradual change. Bad conditions and potholes can accelerate wear and damage them in a hurry. I happily replaced my front wheel bearings around 80k, but left the rears on for nearly 120k, which was a mistake. It all starts with noise, but can easily transform into noise + vibration given the wear level. This can easily confused with tire / wheel related problems and should not be overlooked.