I hate to dissappoint you but posting on every tire thread around the forum asking if different sizes fit probably isnt going to get you any answers considering very few people have gone with larger tires and have experience to give feedback if they even run the sizes you are asking for. The model is still relatively new (just hit its 4th year)with a growing userbase on the forums but nowhere near as massive as like a mazda3 forum which has over 15 years of production including a performance segment. I try to help as much as I can based on my experience with tinkering but we cant cover all bases.
All I can suggest is use a tire calculator site and do some comparisons and measurements of the car and available room with stock tires and see what the calc gives you in numbers for the new tire based on stock/current. I use this for my cars since I had an old tacoma back in the day yet still applies to most cars based on its algorithm but you can find others too. I cant stress the point to do measurements yourself and to not believe people in the internet that give you a "probably" answer without seeing proof of their words.
https://www.tacomaworld.com/tirecalc
That being said I think youll have more trouble with rubbing with that 215/60/18. I ran the number in comparison and while we cant use the sidewall height numbers since its different naturally for 16 vs 18 size wheel, the overlay says its slight larger than this guy's 215/70/60 who said hes already hitting the fenders and has the black plastic trim popping out. If you are really hurting for front clearance the lift kit thread from earlier will guide you to front spacers but only the front will work. Rear spacers will not work. Its not the best option but probably a more reasonable route if front clearance is an absolute must.
https://www.tacomaworld.com/tirecalc?tires=215-70r16-215-60r18
https://www.cx3forum.com/forum/mazda-cx3-owners-check-area/10585-greetings-nyc.html