The V is a speed rating for the tire of 149 mph. The R just means Radial construction.
NO, rim size is incorrect.
Yes , you can replace a 205 50r 16 with a 205 60 r 216. You must replace in pairs, not a single tire.
Yes, you can
depends on what rims you have. 195/70R14 - steel 14" rims with hub caps 205/60R16 - alloy 16" rims with 5 straight spokes 215/50R17 - alloy 17" rims with 5 diagonal spokes
Yes it can.
The '70' tire is higher, but marginally. Should work on same car.
205/60r16 205/60r16 205/60r16
The tire is taller
Of course you can.
No, it will not.
No, this is not an acceptable swap.
Depending on the market and options, the 2010 Mazda 3 2.5 can be specified in the following tyre sizes:195/65R15 (6Jx15 wheels)205/55R16 (6.5Jx16 wheels)205/50R17 (7Jx17 wheels)