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Last Post 12/11/2007 9:44 PM by  Danno
Tire/wheel size - opinions?
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Danno
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12/06/2007 5:01 PM

    I'm rolling around some ideas, and it's too quiet around here.  So I'm soliciting opinions on the question of the day.

    Suppose you had a 3400 pound AWD street touring car, and your choices of wheel/tire size were 245/45-17 on a 17x8.5 inch wheel and 245/40-18 on an 18x8.5 inch wheel...the 17 inch combo being significantly less expensive with the same tire.  How much would you feel you were giving up by using the 45 series tire vs. the 40 series?  Enough to worry about?
     

    Andy
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    12/06/2007 7:41 PM

    I would worry more about the possible weight difference between the 2 combinations than the profile differences. The overall diameter of the 2 are within 0.1" of each other so gearing is a non issue.

     

     

    MattG
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    12/06/2007 8:23 PM

    I would consider the cost of the tires, the number and quality of different tires for each size, and the weight of each combo.....in that order.   Are these Daily driving tires or autocross only?

    Scooby Do
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    12/10/2007 3:45 PM

    18" tires are more money

    "usually" 18" wheels are more money

    Danno, if they're for the street I have a set of OEM 17's for cheap with tires?

    bumsarama
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    12/10/2007 4:45 PM
    If the choice is in regards to a "certain new vehicle"[;)], and the 18" wheels/tires are an additional/costly option, I would take the 17's. Once I take delivery of the vehicle, I would purchase my own 18's (much cheaper) and mate them with my own choice of 18" tires.  Then I would sell my brand new OEM 17's on Ebay/forums.
    Danno
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    12/10/2007 6:04 PM

    The question was, in fact, relating to a "certain new vehicle."  :)  The stock and optional wheels on the STi are both 18x8 (or possibly 18x8.5...there's some conflicting information floating about)...the BBS wheels you pay $2k more for are 7 lbs. lighter per wheel.  My thinking was that wasn't worthwhile even if they gave me BOTH sets of wheels.

    According to Tire Rack specs, the 245-45-17 and 245-40-18 are the same outer diameter, the same weight, and $70 less *per tire* in the Bridgestone RE-01R.  So I think my plan is to use the stock 18s for street tires, and see if 17x8.5 Rotas will clear the brakes.  Thanks all for the advice!


     

    Scooby Do
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    12/11/2007 8:51 AM
    What will you do with your current 17" slipstreams? Can I call dibs? If you're getting what I hope you're getting the pcd of your current wheels isn't compatible with your next car....can I have a ride in it when you get it?
    mugwump
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    12/11/2007 8:54 AM
    Definitely go with the 17's.
    Danno
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    12/11/2007 9:44 PM

    Sorry, Shawn, my brother-in-law has dibs on the old slipstreams for his WRX...

    And yes, a new STi is on the way.  I mentioned it in the STi thread over in the new car forum. [<:o)]  And there shall be rides for all who want them!

    I agree with the masses...I think the 17x8.5 gunmetal slipstreams would be an excellent match.
     

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