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Yes, that is a pretty good substitute.
No they are different heights (65 and 75 mm) and different rim sizes, 17 and 15 inch diameter respectively.
No you can't, otherwise tires can touch fender and cause serious crashes
Can you replace 205/65/R15 with 205/75/R15
You must mean 205/70-15 as there is no 206 size. The answer is no, as you will be going to a tire that is over 5% larger in diameter. Your speedometer will be off 3 mph. You can however substitute a 215/65-15 or a 195/75-15
The 225/55 tires are wider and shorter in sidewall height, so the height would be fine but you'll need to see if the width works without scraping.
yes
without wide fender: 15 x 6.0 JJ - Steel/optional Aluminum (P235/75 R15) with wide fender: 16 x 7.0 JJ - Aluminum (P255/70 R16)
Yes.
No, this is a very bad swap. Your speedometer will read 55.2 mph and a true 60 mph. You're handling, braking, and ride will be adversely effect. You would have to go with a 185/75-15 tire in order to have an acceptable substitute in a 75 series tire. If your vehicle is 65 series tires installed from the factory there is no way you should go to a 75 series tire. You can go to a 70 series tire if you install size 195/70-15 which is an acceptable substitute.
The 225/55 tires are wider and shorter in sidewall height, so the height would be fine but you'll need to see if the width works without scraping.
Yes