According to automobile-catalog the following wheels may also be compatible:
Standard tire size for 2013 Mazda 6 2.5 SkyActiv-G i-ELOOP:
Standard tire size: 225/45 R 19 W
Tire width (mm): 225
Tire sidewall factor: 45
Rim size (in): 19
Total wheel diameter (mm / in): 685 / 27
Alternative tire sizes with +3%/-2% total wheel diameter:
(WARNING: any wider tires could not fit the fenders and arches, always check it earlier (!) and in most cases you will need new rims, of course)
Rim size (in): 19
Alternate tire size: 225/45 R 19
Total wheel diameter (mm / in): 685 / 27
Percentage diameter difference to the original (%): 0
Rim size (in): 19
Alternate tire size: 235/45 R 19
Total wheel diameter (mm / in): 694 / 27.3
Percentage diameter difference to the original (%): 1.3
Rim size (in): 19
Alternate tire size: 245/45 R 19
Total wheel diameter (mm / in): 703 / 27.7
Percentage diameter difference to the original (%): 2.6
Rim size (in): 19
Alternate tire size: 245/40 R 19
Total wheel diameter (mm / in): 679 / 26.7
Percentage diameter difference to the original (%): -0.9
Rim size (in): 19
Alternate tire size: 255/40 R 19
Total wheel diameter (mm / in): 687 / 27
Percentage diameter difference to the original (%): 0.3
WARNING: wide tire!
Rim size (in): 19
Alternate tire size: 265/40 R 19
Total wheel diameter (mm / in): 695 / 27.3
Percentage diameter difference to the original (%): 1.5
WARNING: wide tire!
Rim size (in): 19
Alternate tire size: 275/35 R 19
Total wheel diameter (mm / in): 675 / 26.6
Percentage diameter difference to the original (%): -1.5
WARNING: wide tire!
Rim size (in): 19
Alternate tire size: 275/40 R 19
Total wheel diameter (mm / in): 703 / 27.7
Percentage diameter difference to the original (%): 2.6
WARNING: wide tire!
Rim size (in):19
Alternate tire size: 285/35 R 19
Total wheel diameter (mm / in): 682 / 26.9
Percentage diameter difference to the original (%): -0.4
WARNING: wide tire!
Rim size (in): 20
Alternate tire size: 235/35 R 20
Total wheel diameter (mm / in): 672 / 26.5
Percentage diameter difference to the original (%): -1.9
Rim size (in): 20
Alternate tire size: 245/40 R 20
Total wheel diameter (mm / in): 704 / 27.7
Percentage diameter difference to the original (%): 2.8
Rim size (in): 20
Alternate tire size: 245/35 R 20
Total wheel diameter (mm / in): 680 / 26.8
Percentage diameter difference to the original (%): -0.7
Rim size (in): 20
Alternate tire size: 255/35 R 20
Total wheel diameter (mm / in): 686 / 27
Percentage diameter difference to the original (%): 0.1
WARNING: wide tire!
Rim size (in): 20
Alternate tire size: 265/35 R 20
Total wheel diameter (mm / in): 694 / 27.3
Percentage diameter difference to the original (%): 1.3
WARNING: wide tire!
Rim size (in): 20
Alternate tire size: 275/35 R 20
Total wheel diameter (mm / in): 700 / 27.6
Percentage diameter difference to the original (%): 2.2
WARNING: wide tire!
Rim size (in): 20
Alternate tire size: 275/30 R 20
Total wheel diameter (mm / in): 673 / 26.5
Percentage diameter difference to the original (%): -1.8
WARNING: wide tire!
Rim size (in): 20
Alternate tire size: 285/30 R 20
Total wheel diameter (mm / in): 679 / 26.7
Percentage diameter difference to the original (%): -0.9
WARNING: wide tire!
Rim size (in): 20
Alternate tire size: 295/30 R 20
Total wheel diameter (mm / in): 685 / 27
Percentage diameter difference to the original (%): 0
WARNING: very wide tire!!
Rim size (in): 20
Alternate tire size: 305/30 R 20
Total wheel diameter (mm / in): 691 / 27.2
Percentage diameter difference to the original (%): 0.9
WARNING: very wide tire!!
Rim size (in): 21
Alternate tire size: 245/35 R 21
Total wheel diameter (mm / in): 705 / 27.8
Percentage diameter difference to the original (%): 2.9
Rim size (in): 21
Alternate tire size: 245/30 R 21
Total wheel diameter (mm / in): 680 / 26.8
Percentage diameter difference to the original (%): -0.7
Rim size (in): 21
Alternate tire size: 275/30 R 21
Total wheel diameter (mm / in): 698 / 27.5
Percentage diameter difference to the original (%): 1.9
WARNING: wide tire!
Rim size (in): 21
Alternate tire size: 285/30 R 21
Total wheel diameter (mm / in): 704 / 27.7
Percentage diameter difference to the original (%): 2.8
WARNING: wide tire!
Tire sizes Mazda 6 2.5 SkyActiv-G i-ELOOP (2013 since early-year 2013 for Europe )