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Some notes to help:

215 means 215mm width, and since 2.54cm = 1 inch this means it's about (rounding off) means an 8.5" wide tire. Still though it would work a little more is recommended.

The 50 in your #'s means the height of the sidewall is 50% of the width, so ~ 107.5mm height. You can vary the width and height as a %age if you match up the actual result and don't go too crazy. For example a 225 / 45 / 17 tire would be 101.25mm height. Shorter, but not drastic. 235 / 45 / 17 is even better at 105.75mm height.

I think you can do 235 / 45 / 17 at that offset but it's been a while so I'd read backwards and check for people who have run it or go re-read the first post in this thread to be sure.


Thanks for clearing this up. Must have mis-typed in the calculator when I was figuring out what width wheels a 215 would fit.

-Alex
 

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Will 17x8 fit my 2004 Mitsubishi Eclipse Spyder GTS I have 17x7 factory rims on my car now. The rims I want are only one inch wider. I don't really want to do any mods to the car to get the rims to fit. I prefer just to put the rims on the car. Please let me know if these 17x8 will fit my Eclipse without mods, thanks
 

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Is it bad that I've been running 225/45/18 on my eclipse (2003)for a year now? She seems to handle well. Should I drop her to 215/45/18? She had 225/40/18 when I bought her but they got fat knots and nobody had that size.
 

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Your speedometer will be a little slow compared to normal, but not a huge difference. Using the tire size comparison, 215/45-18 would be closer to stock. It's 0.6% difference compared to 2.0%.
 
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