Tire shop (Discount Tire) said it would fit (but be widest I could fit) -no problems at all. I had a 4-wheel alignment done and the car feels better than new. The tires don't look too wide for the rim. Maybe I should drive it harder lol
That is the widest you can go, but discount tire doesn't know alot. 225 is usually the widest most go on a 7in rim. I am running 235/40/17 on a 17 x 8. Your tire size will mess up your speedo a bit. It is not really a 45 more like a 50 since the tire is wider.
Yeah if you're looking you can tell there is more sidewall but not if you arent looking for it. I had to get tires I was running on cords on all 4 Michelins and they offered this size cheaper than 215/45/17s. I only put about 100 miles a week on the car - sometimes less. I put the tires on in like February I think and only 1.8k miles since lol
I originally planned on the 235's(45 17) when i got new tires last week but due to lack of supply i went with the 225's(45 17), and i'm glad i did. I'm still kind of mixed on how i like the 225's, theres a good bit more sidewall flex at higher speed that you can feel, but lower speed handling has def. improved. Btw, did you have to put spacers in to fit?
For reference, I'm running Acura TL-S wheels on my Si and I'm lowered on HFP suspension. This wheel is the same offset as the stock Si wheel but 1" wider. I had no rubbing at all with the 235/45 tire. I'm currently running 255/40 and I'm not rubbing but it took a little bit of work to make it happen.
I slightly rolled the rears myself with a rubber mallet and a heat gun. On the front, on big bumps, I was rubbing one of the clips that hold the fender liner in place. I had to remove the clip and tuck the liner under the tab. No rubbing now. I think I could run a 265 up front but I couldn't do it with an 8" rim. I'm under the recommended range for a 255 by 1/2" now.
I have put a set of 225/45/17 tires on my stock 07 Si rims and the fit is fine (got 50k out of the original 215/45/17 tires). However, since installing the new tires, I am experiencing light steering and a tendency for the car to wander at higher speeds and not tracking straight as it used to. I have tried having the wheels aligned twice and continue to experience the same. Installation of the new, taller tires almost seem to affect the wheel caster setting; skewing it several degrees negative. However, this car (like most front-wheel drive cars) does not have a caster adjustment.
For those of you who have actually installed 225/45/17s on your Si, have you experienced the same steering described above? If so, did you find an alignment solution that corrects the straight-tracking (light steering) sensation?