215-45x17
17
215
45
625,3
1908,915215
1964,437886
523,8577346
0,078475336
7,847533632
205-35x19
19
205
35
626,1
1911,357454
1966,95116
523,1883748
0,001279386
0,127938589
I we should have 19" on the CT instead of 17" it would need 205/35/19 instead of 215/45/17.
With 215/45/17 you need 523.86 revolutions to get you 1km
With 205/35/19 only 523.19 to drive same distance.