Inthe tire comparison table above, you can see a detailed calculation of the size difference between 225/50 R17 and 245/45 R17 tire. The calculation results are presented in the form of visual infographics, on which tire with Inthe tire comparison table above, you can see a detailed calculation of the size difference between 215/45 R17 and 205/50 R17 tire. The calculation results are presented in the form of visual infographics, on which tire with size 215/45 R17 is on top, and tire with size 205/50 R17 below. Both in the table and in the graph, the tires are 22545-R17 tires are 1.52 inches (38.5 mm) larger in diameter than 205/40-R17 tires and the speedometer difference is 6.1%. The225/45/17's have a average outside diameter of = 25.0. The 215's vary from stock the thickness of a hard book cover. The 225's vary the thickness of a penny. Not much difference. The 225's are wider by only .4 of a inch. However, 215's can save you up to $100 when buying 4 new max performance tires. Theload range will also be much lower. 225/45R17 is 6.62% smaller then 225/55R17. If you want to use 45 series without changing the rims you will need 255/45R17 and this is still 2.65% smaller and for 45 series this should be the widest tyre they have. The correct size is to use 18" and 245/45R18 which is almost same as your 225/55R17. 5xNa7V3. 22545-R17 tires are 0.29 inches (7.3 mm) larger in diameter than 205/60-R15 tires and the speedometer difference is 1.1%. 22545R17's would definitely handle better than 215/50R17's since they are wider & lower profile (0.5" less in diameter) but 225's are really too wide for the TSX stock wheel 17x7. I went 225/50R17's which Also the online application calculates the difference in real speed and speedometer readings if the difference between tire 205/50 R16 and tire 205/45 R17 is significant. If you want to compare other tire sizes, then select their sizes in the drop-down fields and click on the green button. 215/45 R17: 205/50 R17: 205/50 R15: 225/45 R17 vs245/50 R17; vs 215/50 R17; vs 205/50 R17; vs 235/50 R17; vs 245/40 R19; vs 235/65 R17; vs 255/55 R17; vs 205/65 R16; vs 225/55 R18; vs 255/45 R17; vs 215/65 R17; vs Irun 225/45/R17 for winter. No need to mess with the tune. Hey I’m from Mass too with Altimax tires on 17x7 inch wheels, haha. I got the 205/50 because it’s the same diameter as the stock wheels, but to be honest, I probably should have gone with the beefier 225/45. Even with the 50 profile it’s not a whole lot thiccer than the 18

215 50 r17 vs 225 45r17