I'm having a vibration problem with my Mazda 6 when i reach at 110km/hr but the steering wheel stay still..My wheel alignment is perfect.My rims also are in good condition...Some technician told me that it's because of my rims & tires are not suitable for my car .I dont know if it's true but i would greatly appreciate if someone can give me some hints before i bring it again for another check-up. please

 

Ah, I think you have to be a little more specific in order for us to try and help you.

1. Do you have pictures of your car and wheels?
2. What brand/size/off-set are they? Offset is the most important thing here.
3. Can you feel the vib in the seat of your pants? (Ususally a rear wheel issue.)
4. Have the wheels and tires been balanced properly, and then been rechecked recently?
5. Have you tried reinstalling the factory wheels/tires?

 

Sorry for the late reply,i was out for holiday.

1.Please see the picture,my car looks the same but with additional spoilers.I hope that suits your requirement.
3.Yes,i can feel it..i also feel it on the door & feet.
4.Yes it's been balanced but not check yet.
5. The tires & rims was the same when i got this car.

Thanks for the help..Happy new year

 

Since you're running OE wheels (in all aspects, correct to the vehicle) and I assume that they aren't bent I wonder if you picked up a bad tire. Sometimeseven new tires can be out of round causing all sorts of strange phenomenons. In your case, the likely tire would be on the rear of the car. If you rotate them, the vibration should then be felt in the steering wheel. You might try that?

The stock tires that came w/a Honda I once owned were like that. They caused a slight, livablevibration at speed, but really shook the car hard when the brake pedal was hit. We chased brake problems in that car for 2 years before finally replacing the tires, and voila! Problem solved.

 

Try rotating the tires and see if the vibration moves with the tires. I've found that if you don't rotate the tires regularly on the 6, that the rears will feather on the inside edge (due to designed negative camber in rear suspension) and cause a vibration. My wife's car had developed a very heavy vibration and upon inspecting the tire tread I found the problem. Replaced the tires and the vibration is completely gone.

 

I have greatly reduced the amount of neg camber in my 3 and am much happier for it. I don't know why they designedit w/up to 2*/side?? That's a lot for a street car, and as SST said, it makes for bad wearon the rear tires too.

 

It's really a big help the inputs you guys giving me,atleast the technician won't rip me off again when i bring my car for service...They tell you crazy stuff once their income is low.


So it means mostly of the vibration problem i have is from the rear tire..Shall i change my tire with the different type?or can you give me what tires is best to eliminate the vibration considering i will still be using the same rims.

Also,i forgot to tell you that one time i hit the brake so bad that a lot of smoke came out.I almost had a collision,a dumb guy cut me off and we were about 50 meters away from the intersection.Does it contribute vibration also?but before that vibration was present already.

 

You're talking about "flat-spotting" a tire. Yes, that can have a huge effect on vibration, but since you state the problem already existed, probably not in your case.

I think what we are saying to you is that from what you've told us it is likely that the vibration is from the rear tire(s.) But rotating them to the front (LR>LF, RR>RF, RF>RR, LF>LR) would be a good way to find out for sure.
If you recently bought new tires and that's when the problem began, then you have a faulty tire. It happens and the tire companies realize this and will usually replace the bad one(s)w/o incident.
It's not the "type" of tire that causes problems, but the quality. In your case it sounds to us like a bad one made it past quality inspection.

 

Hey,I got the problem fixed..I changed 2 new tires and rotated the 2 old ones as per your advice.

The 2 tires have flat spot and even though it was kinda new,still i changed it.The vibration really ticked me off.

However,i got additional question to ask.When im driving andpause on a stop light,i need to shift the gear on neutral because a small vibration comes.Can you provide me possibilities why it does like that?

 

If you're not moving at all down the road, the only thing that would induce a vibration would be the engine. Maybe check the engine mounts (open hood and rev engine, look for excessive movement of engine from side/side) The engine will normally move some, but not a ton. If you have a broken motor/tranny mount, this could contribute to a vibration.

Maybe change the spark plugs as well (could have one that is slightly fouled) causing the engine to run rough. It's a cheap repair to make.