Vibration above 45 mph

[yellow05]

I recently bought a 2005 Wrangler sport and it vibrates 45 mph+. The vibration starts to smooth out around 60 mph but it never goes away. Under 45 it doesn't happen.

It is sitting on eagle racing wheels that are 17" x 11.5" (I eyeballed the width with a tape measure) with falken wild peak AT3s (32" x 11.5") that are 9 years old but still have good tread.

NOTE: I'm not sure how far off the speedometer reading is compared with stock wheels.

The vibration sounds and feels the same every time I drive it. I suspect it to be a balancing issue or that the wheels themselves are too wide. Here is a picture.

 

[Tronner]

Too many variables to make a guess as to what could be causing your issue. I would start with tires, regardless of how good they look, 9 years is old for a tire. Check your U joints on your driveshafts, front + Rear + Axle Shafts. Check ball joints and hub bearings. Check bushing on control arms, trackbars, etc. Check it all out, if it is loose or crumbles to bits in your hand, you have found part of the issue. Start with tires.

 

[yellow05]

Too many variables to make a guess as to what could be causing your issue. I would start with tires, regardless of how good they look, 9 years is old for a tire. Check your U joints on your driveshafts, front + Rear + Axle Shafts. Check ball joints and hub bearings. Check bushing on control arms, trackbars, etc. Check it all out, if it is loose or crumbles to bits in your hand, you have found part of the issue. Start with tires.

Gotcha, thanks for the help.

 

[AaronPaul]

Over time, tire balancing can degrade, especially with tires that are 9 years old. An imbalance at highway speeds could easily cause the vibration you're feeling. I recommend getting the tires rebalanced, particularly if they haven't been done recently. I would start there but as the other commenter noted, 9 years is a hell of a long time for tires no matter how good they may look.

 

[Duck Doctor]

Do you feel the vibration in the steering wheel or in the floorboards?

 

[yellow05]

Do you feel the vibration in the steering wheel or in the floorboards?

Floorboard and I'm going to replace the wheels and tires mostly because the wheels are too wide for the tire I want to run.

 

[yellow05]

Over time, tire balancing can degrade, especially with tires that are 9 years old. An imbalance at highway speeds could easily cause the vibration you're feeling. I recommend getting the tires rebalanced, particularly if they haven't been done recently. I would start there but as the other commenter noted, 9 years is a hell of a long time for tires no matter how good they may look.

I plan on replacing the wheels along with the tires because I don't need an 11 inch-ish wide wheel for a 32x11.5 tire.

 

[Tronner]

Floorboard and I'm going to replace the wheels and tires mostly because the wheels are too wide for the tire I want to run.

Vibes in floor boards can be both driveline and tires. Trust me, a full inspection of every bushing is worth it, including the body mounts.

 

[yellow05]

Vibes in floor boards can be both driveline and tires. Trust me, a full inspection of every bushing is worth it, including the body mounts.

I'm going to see if it's the tires by swapping my girlfriend's wheels onto my car in a couple days. If that doesn't work I'll go to a reputable shop and have that stuff checked out.