No.
If I understand that question correctly, you can not put a 16" tire on a 15" rim.
No you can not.
NO, that is very dangerous.
No. Even if you were able to stretch the tire on the rim, it will cause damage to the tire.
No. Even if you were able to stretch the tire on the rim, it will cause damage to the tire.
Nope. the "15" is the size of your rim. 15". So a tire with a 15" opening wont fit a 16" rim. but you can put larger tires on the 15" rim.
You can put a 15" or a 16". You can check with a GM dealer's service center about tire sizes, but the Gran Sport has 16" wheels.
no, you'll need a 16" rim
No... The tire is to big and would not "bead" on the rim correctly.
14" rim: 185/65/14 15" rim: 195/55/15 16" rim: 205/45/16 17" rim: 205/35/17 I recommend you stick with 14" or 15" rims.
You must have the same inch tyres as rims. You can however change the profile of a tire to give you more lift You can not put a 16" tire on a 15" rim. You can put 15" rims on instead of 16" if they will fit over the brakes.