225/45/R17s or 235/40/R17s
Senior Member
True Car Nut
Joined: Jun 2004
Posts: 3,459
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From: Glendale, AZ
Yes, that is true.... however, the difference between 101.25 and 94 may be negligible on the road. Perhaps you should get more opinions on the real-world effects of shortening the sidewall. I only say all this because you would definitely get better handling and response from a 235, and it may be worth the small sacrifice in ride quality. Just my two cents 
Junior Member
Posts like a Ricer Type-R
Joined: Aug 2002
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It'* a tradeoff, but honestly, the 235'* have the same sidewall height as the 225'*.
Let'* not get confused here. The ASPECT RATIO is the percentage of tire width that makes up the sidewall. The only way to SHRINK your sidewall height while keeping the same rolling diameter is to increase wheel diameter.
225'* and 235'* on 16'* will have the same actual MEASUREMENT of sidewall height assuming you keep the same overall diamter. Even though the aspect ratio is different.
235/55 is damn near the same as 225/60. But you get a better width. More contact patch with the road/track.
Let'* not get confused here. The ASPECT RATIO is the percentage of tire width that makes up the sidewall. The only way to SHRINK your sidewall height while keeping the same rolling diameter is to increase wheel diameter.
225'* and 235'* on 16'* will have the same actual MEASUREMENT of sidewall height assuming you keep the same overall diamter. Even though the aspect ratio is different.
235/55 is damn near the same as 225/60. But you get a better width. More contact patch with the road/track.
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