CT4-V 4BW lurching when entering driveway.

[TheTacoLoco]

Hi all,

Just purchased a 2022 CT4 BW (auto) last weekend. I'm having loads of fun with the car but have one odd issue that I'm having trouble diagnosing and so I'm turning to y'all to help.

When driving over my driveway entry curb, I enter with a right turn at a slowish pace at about a 45 degree angle. When the second (front left) wheel contacts the curb the car jolts/lurches significantly. It almost feels like stalling a manual transmission car.

I just reproduced it a few times on camera, and nothing seems to be making contact with the curb (besides, you know, the tires).

Any thoughts? Is this expected behavior?

Thanks!

 

[jbawden]

The Alpha chassis is so rigid it will usually lift one of the rear wheels when you approach your driveway apron at an angle, particularly if the angles are acute like you can get with older streets or one that has been paved a bunch of times. Naturally the wheel in the air momentarily upsets the drive motion until the diff can correct and send power to the wheel not hanging in the air.

 

[TheTacoLoco]

Thanks for this response! This totally makes sense and validates the slight wheel slip sound I perceived when playing back the video I took.

Appreciate your help!