Yeah I don't care for my stock tires but I only have 7k on them.
Sitkneelbend, I have a 2015 1500 Sport 4x4 CC
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Here is the original place I heard it from...
Gas pedal vibration gone!!! - DODGE RAM FORUM - Ram Forums & Owners Club! - Ram Truck Forum
If you can't access the link because it's on the "z" forum just google "ram vibration in pedal" and you will get lots of hits. One forum member here solved it by using washers to take up the slack.
In another thread on the z forum they theorized the following...
"I was doing some searching and Read that people believe its a harmonic vibration coming from the engine. Some people have put silicone (black rtv) on the engine firewall side right behind where the pedal bolts on. They said that took the vibration away, giving the harmonics a place to die before getting to your foot.
I was thinking a piece of rubber mat behind the pedal would do the same thing, I may try and see if I can fix this myself, as |I do understand what they are trying to say it is.
I went to the dealer yesterday for a handle update, not even sure what they fixed, and had them look at the pedal again. A second tech said its normal... Which I just dont buy. For the price we pay for these rigs, we should not ahve any wierd vibs..."
and another...
"Hello all, I have been experiencing vibration in my gas pedal too. I looked everything over to find the source. My suspicion was the steering column mount. I believe the vibration is coming from the tires and traveling through the steering linkage and rack a pinion and resonating from the plastic mount that is holding the steering column, brake pedal and gas pedal under the dash. I was able to greatly reduce the vibration to where it is virtually eliminated. I loosened the column from under the dash and used rubber hose washers between the mount and the plastic bracket that the studs are on. There are four studs, the front two closest to the steering wheel I loosened and then removed the two nuts at the rear of the mount. I cut a slit in two of the hose washers so that I can put it around the stud on the back side of the back two column mount studs with out having to completely pull it off. I then put the hose washers on under the nuts then re-tightened all four nuts snugly. Then went for a test drive and to my pleasure the vibration in my gas pedal is about 99% gone. I hope this helps others to be able to fix there issue, as I have read about many others have had complaints about this issue for quite some time."
I think they may be on to something as I noticed a buzzing kind of vibration when I had a K&N airbox installed at certain lower RPMs.