masterquiles

Hi all,

Just got a certified 2009 TL with Tech. Overall happy with the car, specially the stereo and power.

I am a little concern with a light vibration on the steering when doing normal acceleration. I can tell is not balancing as it goes away when the gas pedal is free. Also, on a concrete highway I can notice a vibrating thump when going over the highway lines that divide the concrete. It almost feel like the tires are over inflated (they are not).

Is this is normal? Or should I take back to the dealership? I'm worry they will not be able to replicate the symptoms.

dragonwang

I'm guessing it's one of the mounts, engine mount or strut mount? Regardless, it's not normal...I'd say take it back to dealer while it's still under warranty.

Edward'TLS

Check the front end alignment. It may be off.

dragonwang

Usually alignment will not cause vibration, just left or right pull when steering wheel is at Top Dead Center. I may be wrong though...

jovTL507

So has anyone find out what the vibration is.. ive noticed some also and wanting know if some found the problem.. i see lots or forums about this..

Nick Tiger

2007 TL > having same problem, switched wheels but no difference.

Pseudomaniac

iTrader: (1)

Cross rotated the tires yet?

eazy

iTrader: (8)

wheel & tire balanced?

Nick Tiger

When I picked up the car 6 weeks ago the dealer had replaced the tires as the old ones had seen it's days, the new Sumitomos HTR A/S PO1 m+s were balanced as per the dealer, I don't think they can be
cross rotated because there is an arrow pointing in one direction.

Edward'TLS

Unless the tires specify which is the outside face and have directional arrows, they can be unmounted from the rims and cross-rotated.

2010_Type_SH

Front end vibration can be caused by several different things.

Questions you want to ask yourself to determine what the problem may be:

1) Does it vibrate only during:
acceleration - Check tires or mounts.
at all speeds - Check for bad suspension part
certain speeds - Check for bad tires or bent wheel.
just when you are braking - Check for warped rotors.

Tire balancing issue can sometimes be the tire itself. have the dealer show you that each wheel is zeroed out. In extreme cases they can 180 the tire on the wheel. However if the tire doesn't balance out chances are at times the tire itself is out of round.

Nick Tiger

Thx 2010; I haven't really noticed it in detail, but shall do all the checks you listed.

Pseudomaniac

iTrader: (1)

Sumitomos on a TL? Well, so much for ride quality.

Nick Tiger

I guess you haven't had too much experience with these tires, should give it a try, you would surprise yourself

Nick Tiger

2010 SH > Not only on acceleration - Tires/Wheeels and Mounts - Good;
At all speeds - Any particular suspension part ?
When bracking - Not any different.

Pseudomaniac

iTrader: (1)

Dear Ride quality,

Check back in 15,000 miles.

Sincerely,

A guy that has commuted 90 miles a day for the last 12 years.


----

Dear ride quality,

How many luxury manufacurers deliver their automobiles from the factory with Sumitomo tires as an option?

None? Oh, okay.

Thanks,

The market