Since it has been attached since the purchase of a new car, it cannot be compared with the case where it is not attached.
You can drive normally without slowing down on a curve on a downhill.
Therefore, if the car in front is a light car or a one-box, it will catch up immediately.
Those two cars always slowed down a lot before the curve on the downhill.
We recommend that you install this part if you drive on a mountain pass on a daily basis.

●Osaka Prefecture Gonta-san (Atenza/GJ)