Jump to content
Mopar1973Man.Com LLC

  • Welcome To Mopar1973Man.Com LLC

    We are a privately owned support forum for the Dodge Ram Cummins Diesels. All information is free to read for everyone. To interact or ask questions you must have a subscription plan to enable all other features beyond reading. Please go over to the Subscription Page and pick out a plan that fits you best. At any time you wish to cancel the subscription please go back over to the Subscription Page and hit the Cancel button and your subscription will be stopped. All subscriptions are auto-renewing. 

Odd Vibration

AH64ID

By AH64ID
in 3rd Generation Dodge

 Share

Recommended Posts

  • Staff
AH64ID

AH64ID

Posted
  • Staff
Posted

I am pretty sure I know what it is but wanted to get y'all's opinion as well.

 

I drove from outside Challis to Kuna, ID yesterday. The first 55 miles was dirt and then the next 170 miles of pavement everything was smooth as butter. Speeds up to 80+ at short times but cruising (if you can call it that on mountain roads) at 55-70 for a lot of it. Came to a stop at the intersection of 17/55 and got onto 55 and noticed a bouncing that was the worst at 35-40 mph. It smoothed out a little by 55-60 but I didn't push it past 60.

 

There is no vibration below 30-35 and rpms have no effect (i.e. lug in a tall gear or 3K in a lower gear). 

 

I am thinking a tire might be delaminating but unsure. It is definitely on the rear axle area as I feel it more in my seat than my feet and nothing thru the steering wheel. The transfer case lever is moving laterally up to 1/2" at 35-40 mph. My 6yo was in the back seat and said she felt it behind her without prompting. I told her I thought we might have a bad tire and she said, yup its the back ones I can feel it bouncing. 

 

Pressures were good, tires weren't hot, but the drivers side rear is wearing a little funny. They are my KM2's and the soft lugs makes the outside lugs wear faster from cornering (not a BJ issue as my M608z's wear dead even). Now I noticed that there is contact on the tire between the lugs (they are nearly worn out anyhow). 

 

So.. thoughts? 

 

I am going to go have them checked today on a balance machine. 

Link to comment
Share on other sites
Wild and Free

Wild and Free

Posted
Posted

Pretty common for our vehicles driving gravel roads all the time if they are really dry and dusty, rims fill up with dust and when stopped all the dust dirt falls to one side of the rim and then causes a vibration, same goes when we get a lot of rain and drive gravel, surprising how much dirt builds up in the rim, I just wash out the inside of the rims and good to go again in most cases.

Link to comment
Share on other sites
flagmanruss

flagmanruss

Posted
Posted

When I picked up my used (former lease) Avenger just over a year ago, it drove perfect.  Within a few months it felt like I had a slight out of balance tire...  slight & not consistant.   Recently, I had a more serious shimmy in the steering wheel (flat was on the rear).  They found a broken belt on the driver's front.  They offered to rotate the tires to put it on the rear where it would be felt less until I got them replaced.   

So I'm shopping tires now.  

IMHO, the current trend to low sidewall tires is bad for consumers.  Wife has gone through a lot of busted tires on her Hundai Accent.  She had been buying from the dealer but they would not warentee the tires, not even the ones she bought after the OEM failed so she went somewhere they WOULD give road hazzard.      

Link to comment
Share on other sites
  • Staff
AH64ID

AH64ID

Posted
  • Author
  • Staff
Posted

Turns out there was a broken chord in the drivers rear. The put the spare (5th tire of the same on) and away I went with a smooth driving truck. 

 

A set of 4 new Cooper S/T Maxx will go on tomorrow in 255/80R17.

 

That makes 2 chords damaged within 1,000 miles of each other (thou 11 months apart) on the same stretch of road. I guess the tires are worn out. 

  • Like 1
Link to comment
Share on other sites
  • Staff
AH64ID

AH64ID

Posted
  • Author
  • Staff
Posted

I do. I run those for most of the year and run the 17's during hunting season. 

 

This was on my 255/80R17 BFG KM2's. They are 6 years old and down to about 5/32" so it was replacement time. I put so few miles on them these days (~1000-1300/yr) that I was hoping to eek one more season out of them... oh well. 

Link to comment
Share on other sites
  • Staff
AH64ID

AH64ID

Posted
  • Author
  • Staff
Posted

1000 to 1300 a year. I have never had anything to drive that little. Maybe in 3 1/2 years after I retire. If I get to that low a mileage Mike might beat me back from the moon.

That's just on those tires...

Thats actually a little low now that I really think about it I think 2K is a better average. They are 6 years old and have 22K on them (5 tire rotation) and I ran them full time the first year.

Link to comment
Share on other sites
dripley

dripley

Posted
Posted

That's just on those tires...

Thats actually a little low now that I really think about it I think 2K is a better average. They are 6 years old and have 22K on them (5 tire rotation) and I ran them full time the first year.

Guess I saw the 1300 and forgot about the other tires.

Link to comment
Share on other sites
  • Staff
AH64ID

AH64ID

Posted
  • Author
  • Staff
Posted

BFG was the only option for 255/80R17 in 2009.

 

All in all, despite only getting 22K miles out of 5 of them, they held up to some serious abuse. The road we elk hunt on is no joke and that was their main purpose in life starting in 2011. But when the Coopers came out last year I set my sights on them.

 

Dad showed up to elk camp with a set of brand new KM2's in 255/80R17 so we will have a decent comparison. The KM2's saved his bacon more than once in deep snow with a horse trailer an no chains, so hopefully the S/T Maxx's do just as well.

Link to comment
Share on other sites
  • Staff
AH64ID

AH64ID

Posted
  • Author
  • Staff
Posted

The new tires  are on and the truck is very smooth and quiet.

 

I had couteract balance beads put in, same as my 19.5's, and the tires don't feel like an aggressive tread at all up to 75.

 

The new tires have a date stamp of 3315 which means they are only about 7 weeks out of manufacturing which isn't bad at all.

  • Like 1
Link to comment
Share on other sites
dorkweed

dorkweed

Posted
Posted

The new tires  are on and the truck is very smooth and quiet.

 

I had couteract balance beads put in, same as my 19.5's, and the tires don't feel like an aggressive tread at all up to 75.

 

The new tires have a date stamp of 3315 which means they are only about 7 weeks out of manufacturing which isn't bad at all.

:piwwp:

Link to comment
Share on other sites
 Share
Go to topic listing
×
×
  • Create New...