No
no
If the tyres would not be round they will not move.
Front tyres 30psi Rear tyres 34ps1 Fully loaded 5 passengers with luggage Front tyres 30psi Rear tyres 38psi This is for Tyres 185/60/R15
how does friction help car tyres?
Assuming you're talking about the tyres... The tread on the tyres channels water away from the wheels - allowing the tyres to grip the road better than if the tyres were completely smooth.
because if the tyres are of metal the will slip
Normal pneumatic tyres do not work correctly without air. Run flat tyres do, so do solid tyres.
There are many retailers and websites that can offer customers scooter tyres for sale. Some of these companies that offer scooter tyres are Scooter Tyre Store, My Tyres and National Bike Tyres.
The advantages of using Continental tyres are that they are cheaper than some other tyres. Another advantage of using Continental tyres can be that they last longer than some other tyres.
They emit a bit of latex dust from the tyres wearing down a bit of outgassed organics from plastic parts and some heat.The support structure (manufacturing plants, power generation sections and petroleum production for the plastic bits and mining waste for the metal and battery problems may have emissions like any other created product.
The Airbus A380 has 22 tyres. Two smaller 'auxiliary' tyres at the front and twenty tyres in the main gear.
under-inflated tyres