Basic questions about the NA

Good morning together, I’ve been the proud owner of a 91er US-Miatas since this week and have a few general questions for the professionals among you – What tire size/light size do you drive and how does it affect the performance? My Miata currently has 185/50?/R15…but they are already 13 years old and have to be renewed accordingly. If I want to drive 195er or 205er now, does this have a negative effect on the driving characteristics? does it say “if necessary”? – Do your Miatas beep even if the ignition/motor is on and the doors are open? Mine has a small pen on both doors, if it is not pressed, it beeps terribly. No it is not the light Can you put that out somehow? – Are there any steering wheels (Momo, Sparco, etc.) MIT airbag for the Miata “Performance”? – What is the exact name of the hoses left of the throttle flap? Are these the “water hose throttle flap to the oil cooler” (Beze ilmotorsport)? I’ve read many articles about it with many different opinions, so I’m sorry if one or the other question has been asked before. Thank you very much.