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18 Inch Rims

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    18 Inch Rims

    I bought some 18 inch rims and got them installed but the tire profile is way 2 low for me. its 215/35ZR18.

    I was wondering how much thicker i can go with the tires without any scraping.

    #2
    On stock height , you won't have any problems with 45's.

    1993 Honda Accord LX 2004-2009
    1996 Honda Civic LX 2009-2012
    2012 Kia Optima LX 2012-2013
    2010 Honda Accord EX-L V6 2013-2018
    2007 Honda Fit Sport 2017-2017
    2018 Honda Accord EX-L 2.0T 2018-20XX






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      #3
      thanks for the help, much appreciated

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        #4
        i have 215/45/18 and still have plenty of space left, but its gonna get lowered so not going any thicker

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          #5
          what method are you going to use to lower it?

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            #6
            Originally posted by Tx_CB7 View Post
            i have 215/45/18 and still have plenty of space left, but its gonna get lowered so not going any thicker
            With a 45 side wall the difference between stock tire size is -1.406.

            when changing tire size the difference in overall wheel diameter must fall within -/+ 0.4 in of stock tire size

            A 40 series sidewall tire will be better for 18's as the overall wheel diameter is only a -0.5 difference from stock.
            Last edited by nate'sCB7; 06-08-2011, 01:36 PM.

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              #7
              on my 92 4 door a few years ago, I was running 18" tenzo R RS5's. I was using a 225/40/18. its was lowered about 2.5-3 inches and didnt rub. but i also rolled my fenders. the only reason i did was because they fronts WOULD rub if i hit a bump while turning sharp. didnt rub bad but rubbing is never a good thing



              MRT: http://www.cb7tuner.com/vbb/showthread.php?t=183959

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                #8
                45 is the proper aspect ratio for a 17" rim. On an 18" rim, that's going to be quite thick. 35 is the proper size for the rim. If that's too little tire for you, get a smaller rim.

                If you get a thicker tire, at least be prepared to have a speedometer that reads much slower than you're actually going. Get a GPS unit or something that will show you your speed, and note the difference (it will be a ratio... so it may be 5mph off when it says 30, but 10mph off at 75...) Otherwise, you'll find yourself getting speeding tickets left and right.






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                  #9
                  my speedo is already off by about 5 even with stock rims on it. i just deal with it.

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                    #10
                    Originally posted by deevergote View Post
                    45 is the proper aspect ratio for a 17" rim. On an 18" rim, that's going to be quite thick. 35 is the proper size for the rim. If that's too little tire for you, get a smaller rim.

                    If you get a thicker tire, at least be prepared to have a speedometer that reads much slower than you're actually going. Get a GPS unit or something that will show you your speed, and note the difference (it will be a ratio... so it may be 5mph off when it says 30, but 10mph off at 75...) Otherwise, you'll find yourself getting speeding tickets left and right.
                    ^ totaly agree! If its to small of a tire get smaller wheels like 16-17s

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                      #11
                      215/35/18. Same size that's in the pic in my sig. I had no issues.

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                        #12
                        You wont have any problems if you do a 2 inch drop no rubs

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                          #13
                          thanks for the info i have a drop planed for the future
                          Originally posted by integraracer24 View Post
                          You wont have any problems if you do a 2 inch drop no rubs

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                            #14
                            Keep in mind that you have to get the correct offset as well.






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                              #15
                              Originally posted by deevergote View Post
                              45 is the proper aspect ratio for a 17" rim. On an 18" rim, that's going to be quite thick. 35 is the proper size for the rim. If that's too little tire for you, get a smaller rim.

                              If you get a thicker tire, at least be prepared to have a speedometer that reads much slower than you're actually going. Get a GPS unit or something that will show you your speed, and note the difference (it will be a ratio... so it may be 5mph off when it says 30, but 10mph off at 75...) Otherwise, you'll find yourself getting speeding tickets left and right.
                              there was a thread regarding tire sizes where i was told that different sized tires/rims would not affect the speedometer, i am confused now, please help
                              http://i220.photobucket.com/albums/d...82408002-1.jpg

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