[YesThisThingHasAHemi]

Should our parking brakes hold our cars on a steep incline, say at 45 degrees? I was surprised to have mine roll back after applying the brake. But I wondered if that steep of a hill is too much to expect.

 

[SolApathy]

There are no roads that steep lol. a 45 degree incline-- The tires would not hold lol. Steepest road in the world is 35% or 19 degrees of incline.

 

[YesThisThingHasAHemi]

I was referencing my driveway. I live on a hill - a steep hill. Haha.