Nope mirrors are inexpensive
Driving without a heat shield may damage the car. It can damage the car by melting any gaskets (rubber hoses), and electrical wires close to it.
Yes, the plastic tinting material will prevent the shattered glass from flying around the car and injuring the occupants while at the same time limiting damage to the car.
Just normal 4x4 driving won't damage anything. If you drive for a long distance with the diff lock on though you could damage tyres and at high speed could be dangerous,
no it will not damage your car, but it will waste alot of fuel
small particles detached from the driving band can damage inner side of muzzle brake like corroded aluminum.
YES
Risk
More than likely, yes. The car was the responsibility of the person driving it at the time of damage, regardless of the circumstances. You are NOT liable for any part of the damage (including deductible) as long as you are driving with your friend's permission. No, you are not responsible for the damage.
If you are driving their car and hit their car, then their insurance will pay for the damage on both cars. If you are driving your car and hit their car, then your insurance will pay for the damage on both cars.
insurance
Yes, as long as there is no damage to it
Very bad idea. engine damage will result.