i know this might be a stupid question but garages usually lift the front or rear of a car to test the rear/front brakes respectiveley.

Will this damage the differentials or is it ok under certain speeds?

cheers for any help

 

If you check your manual which came with the car it actually shows this being done in there... you just have to lift the opposite end of the car that is not on the rollers with axles stands etc...

Still don't like the idea myself though..