Heffing wheels wont balance

[SVTFocus101]

I just put new tires on the car had it balanced three times I still get vibration at 60mph+. I didn't get any vibration before the new tire install. So what’s the freaking deal? Could it be the stupid chrome wheels on them? The dude at Discount Tire said aftermarket wheels are harder to balance.... Anyway, I hope to be getting OEM on soon.

 

[SuRrEaLNJ]

could be out of phase. the wheel has a certain amount of run out, and so does the tire, if oriented in a certain way they will either amplify the runout, or cancel it. try taking it to be balanced somewhere where they have a road force variation capable ballencer and can phase match your tires for ya

 

[SVTFocus101]

I have never heard of that before. Thanks man, I will check that out!

 

[SVTFocus101]

could be out of phase. the wheel has a certain amount of run out, and so does the tire, if oriented in a certain way they will either amplify the runout, or cancel it. try taking it to be balanced somewhere where they have a road force variation capable ballencer and can phase match your tires for ya

Just because I am curious could you explain to me what out of phase means?

 

[SuRrEaLNJ]

yea

both your tire and your wheel have a high spot and a low spot. if you put both highs together it amplifies this variation of the entire assembly.
theres a certain spot that you can mount a tire on a wheel where there will be little to no run out of the assembly, and theres a certain spot where the runout variation will be the highest
when you phase match a tire the machine measures the wheel runout, as well as the tire runout and the sidewall stifness under load, and instructs the user on how best to mount the tire on the wheel for the greatest uniformity throughout the rotating assembly, and therefore the least amount of vibration

these animations will explain it a little better than i can
CLICKY