kumho ecsta ast out of round after 10,000 miles.......causes

This tire sounds like a hammer is hitting it. It smooths out and is quiet at higher speeds. At lower speeds it sounds like a worn out tire.

Alignment is good and car is never driven aggressively. Is something on my car causing this or are these tires junk.

Tread depth is...probably around 8 if I were to guess. Haven't measured it.

I'm pretty sure its only in the front tires

Sounds like a hammer hitting it? Any other way to describe the sound? Haha.

There is a light thumping sound at low speed.

After 10,000 miles they are acting out of round

The wheel weights are still there. I don't feel any belt separation. They feel smooth to the touch.....no obvious high or low spots

I then drove it 800 miles at 70mph.....its fine until I get into town. After the trip they got slightly louder

How sure are you that it's the tires? Wheel bearing?

I'm not 100%....but I'm 80% its not bearings. They seem solid. No play.

I had this problem before when I bought the car. The reasoning was good because the tires were absolutely shot. 1 or 2 tread depth and mismatched.

I put the kumhos on there and all was quiet. Then over time they became louder

The only reason I have not ruled out the bearing is because I don't rule out anything till I'm 100% sure through trouble shooting

I put a set of these on the front of my car last year just do me over until it got warmer and probably 10k or so into the tires I noticed I had a noise on the left side and it sounds like a bearing and I checked all my bearing and I had no play in the bearing so I decided to change the tires up and it went a way. So That may be the case for you.

I'm almost sure its the case.......

But why......a tire that lasts 10k. If that's the case kumho will be my newest 4 letter word

What did you put back on there and how is it wearing?

The AST is not the greatest tire in the world. I've had a couple sets of Kumhos in the past and they were somewhat noisy towards the end of their life (Kumho Ecsta Supra 712s and Kumho Ecsta SPTs).

If you're looking at a decent all-season tire that stays quiet, Continental ExtremeContact DWS or Kumho 4X.

I took it to a kumho dealer. He is going to flip the front tires around. The inside is cupping.

He explained to me that these e46 cup on the inside with directional tires. He told me that next time it would be better to go with non directional

My Cum Hoes were out of round when the were first installed. Never again with those cheap pieces of crap

These were feathered bad on the inside and faintly on the outside.

The alignment numbers are in spec.

Camber front-.08
Total toe .05 for the front within spec

Still feel the faint feathering now that they are switched because the outside (now inside) was slightly feathered. They were inflated to 32 PSi

The fronts are now at 35 and the backs 36

Shocks aren't leaking
We suspect bushings......will check tomorrow

They aren't out of round.....I've found they would have been from day 1 and they were not.

Car passed the bounce test as well

Originally Posted by VMRWheels

The AST is not the greatest tire in the world. I've had a couple sets of Kumhos in the past and they were somewhat noisy towards the end of their life (Kumho Ecsta Supra 712s and Kumho Ecsta SPTs).

If you're looking at a decent all-season tire that stays quiet, Continental ExtremeContact DWS or Kumho 4X.

Interesting comment that the DWS stay quiet through their service life. I've heard many others on this site complain that they get loud after about 15k. Have you had a better experience? I'm currently considering Michelin PS A/S Plus, Michelin Primacy MXM4, Bridgestone RE970AS Pole Positions, and the Conti DWS. MXM4 may not be available in the right sizes so the DWS is currently at the top of my list, but I'm REALLY worried about the noise based on what others have said here.

Anybody with comments about Conti DWS getting noisy (or staying quiet) as they age?

Well I imagine all tires will increase their noise levels towards the end of their lives, but I haven't driven on a set of DWSes long enough to know how they compare to other tires yet. My sister has them on her Civic, but they just got put on maybe four months ago or so. What I do know though is that they were very quiet as is!

The khumos were feathering on th inside. More in the front tires than the back.

I replaced the fcabs, rsm, struts, shocks, rtabs, and strut mounts with koni shocks and meyle bushings. The car is much stiffer as the konis are one turn in back and 2 in the front. Who knows?

The only way to tell now is to put new tires on it. Ill run the khumos till they are dead and replace them with conti dws. Heard good things about them.

The rear shocks were shot and the front were really soft. The fcabs were also worn. The rtabs were good but I replaced them anyway with power flex. Kept the original sport springs

anyone have experience with the spt?

Had the same problem with asset of kumho's also. Not sure what type they were it ended up finding out the inner barrel of the wheel was bent.