Yes you can
yes
Yes they will.
225/75-16 or 255/65-16
Yes they will fit but if you crank the steering all the way you rub a little depending on the tire tread.
Replace the tire
Yes , you can replace a 205 50r 16 with a 205 60 r 216. You must replace in pairs, not a single tire.
The best idea to replace a tire which has a whole in it is to replace it with a new one. Reason as to why you should replace it because the tire can wear out and blow out sooner with a whole in it.
Yes you can
Generally requires removing and dismounting the tire, replace TPMS sensor, remount tire, balance tire, re-install tire to vehicle, do the relearn tire position procedure.
You can not replace just the tire pressure sensor on a Boxster. You will need to replace the whole sensor. The sensor is located inside the tire assembly.
somebody help with this qauestion please. yes or no
Yes, it is possible.