Nope. the R15 and R16 are the size of the rim on the vehicle. they are not interchangable and must be the same.
No the rim and tire are too big.
the most nearest should be 275/65x15
The tire sidewall will list the max pressure. Check the owners manual or the driver door jamb sticker for the correct pressure for a vehicle
No, you cannot directly replace a tire size 215/75R15 with 205/65R15 because they have different dimensions. The 215/75R15 tire is wider and has a taller sidewall compared to the 205/65R15, which can affect the vehicle's handling, speedometer accuracy, and overall performance. It's essential to consult your vehicle's specifications or a tire professional to ensure compatibility and safety when changing tire sizes.
Maybe, depends if you have the clearance for the wider tire
What would cause a grinding noise after a tire is replaced and the brakes are not worn?
No, that would cause the speedometer to be off as there would be 1" difference in diameter. You can replace 215/55-16 with 235/50-16 which would both be 25.3" in diameter. You must keep the diameter as close as possible to the same 25.3" diameter as the OEM tire.
A bubble on a tire is caused by damage to the tire. It looks like a bump on the tire and should be replaced.
As soon as practical. It will have a slow leak until it is replaced. Don't remove it! Your tire will go flat and you will be stuck.
Definitely no.
Yes, that is reasonable.
This happened to me once - - have you checked the air pressure in the spare tire?