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Discussion Starter #1
Does anyone have any pics of their car with 235/45/17 or 235/40/17? I was looking for a second of of tires and rims. I found a nice set of 17x8 at tirerack. I like to run a wide with tire. I currently am running 225/45/17 on the stock si rims, and i love the way they sit on the rim. The tirerack rims are an inch wider so i was thinking about go to 235 width, but was sure about fitment. So wanted to see if anyone else has them and if their any issues with running tires that wide. thx:coffee:
 

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im running 235/45/17 and dropped with sportlines and when i hit big bumps i rub..but thats pretty much it
 

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You will find most members use 225/45-17, but as the their previous post, there are some that run 235/45-17. Let me point out that not all same size tires are equal. Meaning that sizes may vary from brand to brand. Since you are considering a rim from Tirerack, I would call them and ask about the fitment for your desired needs. Plus, since I have purchased rim/tire packages from them, I have received great prices and excellent service along with well packaged shipping (never had to return anything). If you buy your tires locally, like Discount Tire or and other national brand, they will be happy to "test fit" a tire for you if you are a serious buyer.
 

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racerx78 said:
they have a 45mm offset. And i'm leaning more towards 235/45.
I have the same offset on my Traklites & I'm eventually going to upgrade from the OEM 215/45's to 235/45's.
 

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I'm running Bridgestone RE-01R 235/40/17 on stock wheels (+45) with stock suspension.

Everything fits and runs perfect. Best street tires IMO as long as you don't mind only getting 15k miles out of them.

I'm planning to upgrade to Enkei RPF1 17x8 +35 sometime in the future with the same tires.
 

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Discussion Starter #10
SImefly said:
I'm running Bridgestone RE-01R 235/40/17 on stock wheels (+45) with stock suspension.

Everything fits and runs perfect. Best street tires IMO as long as you don't mind only getting 15k miles out of them.

I'm planning to upgrade to Enkei RPF1 17x8 +35 sometime in the future with the same tires.
Got any pictures of your setup?
 

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There is no advantage to running a 235/45-17. It's tall for the civic, heavier than a 235/40-17, and has almost identical tread width.

You will have no problems with a 235/40-17 or 225/45-17
 

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Discussion Starter #12
thedamaja said:
There is no advantage to running a 235/45-17. It's tall for the civic, heavier than a 235/40-17, and has almost identical tread width.

You will have no problems with a 235/40-17 or 225/45-17
over all 235/40 is shorting than stock height wheel 215/45, and that can affect my speedo and mpg negitively. I've done that before and my mpg was crap afterwards. So thats why i wanted the 235/45. Its not much heavier and i don't plan on lowering my car anytime soon. Also the 225/45 i have on the stock rims look perfectly match as far as width, so i know it will be off if i go to a 17x8 wheel.
 

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I bet your MPG is worse with a 235/45-17. You have a larger contact patch and rotating mass. It will also effect your speedo even more than a 235/40-17

Here are the calculated overall diameters of the stock size & 235/xx-17 tires
215/45-17 OD of 24.6"
235/40-17 OD of 24.4"
235/45-17 OD of 25.3"

Now not all tires in these sizes end up with these exact measurements.(The stock Michelins actually are 24.6" ) The difference from stock to 235/45-17 is .7" vs 235/40-17 which is only .2" You could actually shop around and find some 235/40 that are 24.5" OD

The last thing to consider is that a 235/40-17 is measured on a 17x8.5" wheel so mounting it on a 17x8" wheel like you plan would produce an OD almost spot on with the stock OD.
 
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