And now new comer, Audi A3 Sports Back 2011 model is at hand. Strange tire noise while straight run is the problem, that accompanies with periodic noise and vibration.
I performed the wheel alignment scaling as usual obtaining the datum below.
Front: Total Toe 10.67 min---Slightly out of standard value 0 to 10 min.
Rear: Total Toe 45.90 min---Far from Standard value 10 min.
Thrust Angle>Plus 13.10 min---Out of European Vehicle Safety Standard plus minus 10 min
So, I performed correcting procedure utilizing LASER Beam measuring device as followings.
Front: Total Toe Zero---Standard value for Golf 7 GTI.
Rear: Total Toe 10 min---Standard value For Golf 7 GTI.
Thrust Angle>Zero---Ideal Median
(Both scaling and adjusting procedures were performed in the condition of 60 kg weight burdening on driver's seat.)
Keeping tire pressure at 2.3 kp for front and 2.1 kp for rear, 100 km distance running wiped out strange tire noise. And EPS center position calibration by 360 degree right and left 360 degree precisely then keep the marked center position at over 35 km/h established incredibly stable straight running.
EPS calibration system is some good way to deceive ill-wheel alignment, but fundamentally, establishment of correct wheel alignment is a key to make the vehicle "Fun to Drive".
When the vehicle is jack upped, another safety weight support is the best way to keep yourself alive! Be sure! Jack moves and car falls down!
Remember, an aged famous Porsche service mechanic went away under his favorite car, it's a miserable story happened several years ago.
As for pollen filter in dashboard, filter itself is so made to be destroyed when removed , delicate and fragile paper is half cut at side wall intentionally. If it is reused, no mold smell and no hole are the indispensable requirement, any way this tiny paper-craft for replacement at 5,000 yen is too much?
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