Skip the auto shop - Our mechanics make house calls

Q: bouncing feeling when going 40-43mph goes away after that speed

asked by on

Around 40-43 mph my 2005 dodge ram 1500 starts to feel like it's bouncing would be the best way to word it. I feel a vibration in the pedals but not much. I mainly feel it in the seat when I am going the certain speed. I have checked the shocks for leaks and nothing, don't have the right tools to take them off. The U joints in the front and back are also good, wheels have proper air pressure and new wheels and tires that are balanced, wheels do have a 10mm offset, started happening about 6 months ago before i got new wheels but 6-8 months after i got new tires, the tires i got are bigger, went from a 245/65/r17 to a 285/70/r17. Mainly feels like its coming from the rear end.

My car has 84500 miles.
My car has an automatic transmission.

Hi there. If the tires are that large and the wheels have that configuration, then you may need new shocks. The factory shocks are not made for this size of tire and wheel. I have also seen this offset cause some serious bearing problems. The axle bearings and hub bearings need to be checked for any excessive play. If there is any, then they need to be replaced. Worn engine and transmission mounts will also cause this. If you want to have this looked at, consider YourMechanic, as a certified mechanic can come to your home or office to diagnose the vibration to pinpoint any adjustments that are needed.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Ac compressor turning on and off

Hello. If the compressor is turning on and off fairly quickly then that means that there is still a pressure issue. It can be caused by low refrigerant or high pressure. It can also be caused by a bad A/C...

Q: My blower motor and interior lights quit working. How do I fix it?

Hello - first thing to check would be blown fuses. These 2 components are on separate circuits. The blower motor also has a relay which should be checked. If the fan works on the High/Max position, but not other speeds,...

Q: I accidentally got synthetic oil instead of regular motor oil and only put in quart and a half. Will it mess up my engine?

Hi there. Today's synthetic oils are much different than in years past, so accidental mixing like you've described is not as damaging to the engine as in years past. However, I would recommend having the oil changed sooner rather than...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...