momo

Is it possible to use a normal deep drive socket to replace spark plugs or does the socket have to be magnetic?

Say for example, I have a car with 15 inch wheels and I installed 17 inch wheels, how would it affect the car? Also, what difference would it make in terms of what tyres need to be used? From what I’ve heard it can affect the speedometer and also gearing may need to be altered.

Can anybody please explain to me how a hydraulic handbrake works and also what is the difference between a normal handbrake and hydraulic handbrake.
Thank you