!!!!!!!!!!!!!!!!! Steering wheel shaking with new tires, HELP !!!!!!

I just installed 2 new tires on the front of my New Yorker, since I had a
gash on one of the old ones and couldnt get it fixed. After taking it to the
shop and had the tires mounted and balanced, now it sakes in between 40 and
50 MPH. other than that, it is fine. I don't think it can be balancing, coz
it'll shake at what ever speed, am I right?
Should I take my car back to them, or can it just be the new Yokahama tires
starting to break-in ? Thanks.

 

If it's not a out-of-round tire or balance problem, a bent (usually
steel) wheel can cause that. Best way to check is have the tire shop
unmount the tires and carefully watch the wheel rim edges for any
detectable side-to-side and up-down motion while it spins on the
balancing machine.

Also make sure no suspension components are worn/loose.

Good luck.

Bill Putney
(to reply by e-mail, replace the last letter of the alphabet in my
address with "x")

 

An out of balance axel can cause that too

 

Just to add to my first post, my car was rining perfectly fine before my
flat. And it does not have a steel rim, it has custom/aftermarket
"fiberglass" rims. Thanks.

 

Then it sounds like it must be bad tires, bad balance, are imporper istallation.

Try rotating the tires around and see if the nature of the shake changes -
certainly if the new tires are the problem and you move them to the rear, the
steering wheel shake will go away and tell you if the new tires are the
problem. If the steering wheel still shakes with the new ones on the rear, then
the problem is not the tires.

Bill Putney
(to reply by e-mail, replace the last letter of the alphabet in my address with
"x")

 

If you had a blowout [e.g. torn tire, not just a "flat"] you could
have easily damaged [bent] the rims, especially a fiberglass one!

Also, a small garage might have done a static "balancing", not a
dynamic balancing and the new tires "might" have a side to side
balance issue, not just an axial balance issue.

A blowout could also have affected your front end alignment. Take
it to a front end shop.

And as a previous poster said, check the
rims - if bad they'd have to be replaced, AFAIK. - RM

 

I've had tire shops completely screw up a balance job before. Sometimes
it may be the balancing machine out of calibration, sometimes operator
error. And sometimes, a wheel weight comes off because it wasn't
installed correctly. I'd take it back and have them check the balance,
and if its not that I'd guess a defective tire. Tires don't need to
"break in" but sometimes they have internal flaws that make them wobble
the steering wheel.