Vibration issue found?

"HammerheadFistpunch" (hammerheadfistpunch) 01/19/2016 at 11:16 • Filed to: Tires, Cruisin'

0

32

So the cruiser has developed a bad vibration issue; its not the bearings, its not the driveshafts, its not the brakes. I can’t pin it down, but maybe I just found a huge clue.

Take a look at the pattern formed from a drive in the wet this morning. The edges of the shoulder blocks specifically. This tire and from what I can see only this tire, seems to be experiencing a block issue consistent with belt shift of stretch. Confirmed upon feeling the alternating different heights of the blocks. Hmmm. I started suspecting the tires after riding in my friends truck with a similar noise issue. In fact he has his hub bearings replaced on the same suspicion. I wonder if this is a bad batch or if it was damaged running too low a pressure at too high a speed. most interesting.

crowmolly > HammerheadFistpunch 01/19/2016 at 11:23

0

If it dries up maybe you can try the chalk test.

Eberle-Hills-Cop > HammerheadFistpunch 01/19/2016 at 11:24

0

Slightly related, but what are your thoughts on those tires?

uofime-2 > HammerheadFistpunch 01/19/2016 at 11:26

0

That is weird!

you should be able to take it to a tire shop and at least confirm if the tires have become unbalanced.

if all the weights are all still in place than you know something hinky has happened. Maybe if you un-mount one you’ll be able to see something inside

HammerheadFistpunch > Eberle-Hills-Cop 01/19/2016 at 11:27

0

up until this issue they’ve been flawless. Though I have noticed that their winter performance drops off considerably with wear. They take a beating like you wouldn’t believe too, this tire has a chunk missing near the wheel lip and another one has a few minor cuts but not once have I have a flat or issue.

HammerheadFistpunch > uofime-2 01/19/2016 at 11:29

2

I’ve had them balanced umpteen times, they always come out fine, I think that the tread blocks are slapping down in alternating sequence. The old tires that came with this truck had the same issues, it was deemed a belt failure and when I put these tires on it went away. I guess its back. Bummer.

uofime-2 > HammerheadFistpunch 01/19/2016 at 11:33

0

What a strange failure and to have it reoccur. How long since you got the new tires?

HammerheadFistpunch > uofime-2 01/19/2016 at 11:34

1

about 25-30k miles. Its probably related to low tire pressure running or just the sheer weight of the truck.

TheHondaBro > HammerheadFistpunch 01/19/2016 at 11:39

0

Do you regularly rotate your tires?

uofime-2 > HammerheadFistpunch 01/19/2016 at 11:40

0

Ok, so it’s not a quick failure. it makes some sense that running low pressures could cause this sort of distortion.

Kinda sad that it wasn’t considered when the tires are constructed, but off-road engineering tends to be a lot of trial and error.

HammerheadFistpunch > TheHondaBro 01/19/2016 at 11:41

0

I do indeed, about every 7500 miles at most.

Future next gen S2000 owner > HammerheadFistpunch 01/19/2016 at 11:51

1

Camber and alignment issues?

Scalloping/Feathering

Scalloping, which some techs call ‘feathering’, is when all the tread blocks on one shoulder develop a wear pattern in which one block edge is worn lower than the other, leaving a set of raised edges on the leading or trailing edge of each block. Scalloping can be difficult to see sometimes, but can be diagnosed by laying a gloved hand lightly on the tread as the wheel spins (by hand) on the balancer. Scalloped tread blocks will produce an unmistakable ‘flutter’ as you brush your fingers over the raised edges.

Scalloping is generally a sign of incorrect camber, often indirectly caused by an impact that knocks the alignment out, and can be thought of as the start of shoulder wear. It’s possible to catch it early enough that if you correct the alignment, the tire might “wear back in” to a more normal pattern over time.

http://www.tirereview.com/diagnosing-irr…

HammerheadFistpunch > Future next gen S2000 owner 01/19/2016 at 11:55

0

its possible that the camber is out since the axle service requires the trunnion bearings to be removed...but I had it aligned twice after so its hard to say. Right now that tire is on the rear axle with no adjustments.

wiffleballtony > HammerheadFistpunch 01/19/2016 at 11:59

0

1.5 psi off?

HammerheadFistpunch > wiffleballtony 01/19/2016 at 12:00

0

more like 20. It may have been due to running too fast at low PSI

Future next gen S2000 owner > HammerheadFistpunch 01/19/2016 at 12:00

0

I’m at a loss then.

Fun story time.

I brought my car in for an alignment a few weeks ago. The tech was going to give me a four wheel alignment for camber and toe on a 2004 Mustang GT, which has a solid axle. I kinda laughed in his face, that probably wasn’t very nice of me.

TheBloody, Oppositelock lives on in our shitposts. > HammerheadFistpunch 01/19/2016 at 12:01

0

I’ve come to the realization that I need to get a second set of more road orintated tires for my Landie, MT/R’s are just too knobbly for driving regularly on the road.

Edit: Also I have the same tires as you do, 265/75/16's right?

HammerheadFistpunch > Future next gen S2000 owner 01/19/2016 at 12:02

1

Its best that techs be reminded to use their brains from time to time.

HammerheadFistpunch > TheBloody, Oppositelock lives on in our shitposts. 01/19/2016 at 12:04

0

These feel and sound like MT/R’s

wiffleballtony > HammerheadFistpunch 01/19/2016 at 12:15

0

Are you insane man, have you not seen the video?

vicali > HammerheadFistpunch 01/19/2016 at 12:26

0

Cupping/feathering is usually a symptom of a bad alignment/ worn suspension bits, rather than a problem with the tires.. Although I have heard of people hating on duras..

HammerheadFistpunch > vicali 01/19/2016 at 12:34

0

Could be bad camber, I will need to check into it. it COULD have been caused when my spindle was bad...given that only one tire is affected

BLCKSTRM > HammerheadFistpunch 01/19/2016 at 12:46

0

I’ve read that the sidewalls aren’t engineered to handle the amount of heat generated from running low. Which I think would be especially true when you air down regularly, despite them engineering the tire to be aired down.

Sorry to hear it.

HammerheadFistpunch > BLCKSTRM 01/19/2016 at 12:48

0

I try and keep it safe and below 40 mph in the 18-20 range and no faster than 25 in the 15-18 range, but who knows. I also try and feel the sidewalls when aired down to check for heat buildup and they seems to have never been overheated. My new theory is that the tire was damaged when my spindle went bad, given that its only one tire that seems damaged. I will swap in the spare tonight to see if it helps.

vicali > HammerheadFistpunch 01/19/2016 at 12:54

0

Rotate them around and see if your vibe is gone.. but the problem is probably still there.

HammerheadFistpunch > vicali 01/19/2016 at 12:57

0

I think its the one tire... I will check tonight.

TheBloody, Oppositelock lives on in our shitposts. > HammerheadFistpunch 01/19/2016 at 13:13

0

The spacing is pretty wide for an all terrain.

vicali > HammerheadFistpunch 01/19/2016 at 13:13

0

If it’s dry out you could chalk those shoulder lugs and drive around the block. That would give you an obvious look at whats happening.

I had widetrack radial baja’s cup really bad on the front of my old truck, you could see just looking at them like this.. New balljoints fixed it.

HammerheadFistpunch > TheBloody, Oppositelock lives on in our shitposts. 01/19/2016 at 13:15

0

They were deadly quite new, its only recently they’ve become unbearable like this.

HammerheadFistpunch > vicali 01/19/2016 at 13:16

0

Well I know my trunnion bearings are good and they should be in alignment (had it aligned twice) so im guessing it was when my wheel bearings/spindle went bad. or just a bad tire.

TheBloody, Oppositelock lives on in our shitposts. > HammerheadFistpunch 01/19/2016 at 13:24

0

I think it may have to be a Goodyear thing, when my previous set of MT/R’s were on their last legs. They sounded like I was rolling down the road on Super Swampers.

bryan40oop > HammerheadFistpunch 01/19/2016 at 19:40

0

“I wonder if this is a bad batch or if it was damaged running too low a pressure at too high a speed. most interesting.”

Nope, just a goodyear tire.

Rufant v1.0 > TheBloody, Oppositelock lives on in our shitposts. 01/20/2016 at 02:03

1

I do this. My first set of BFG’s lasted for ever, but at about 1/2 way worn, they were noticeably worse off road. But they still have 20k miles of wear left in them. So for the price of a set of steel wheels, I now roll with one set for normal road driving, which for most of us is 90% of what we do. It keeps the off road set nice and sharp on the tread blocks.