1. Welcome to Tacoma World!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all Tacoma discussion topics
    • Communicate privately with other Tacoma owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

Tire size question for 18 inch wheel

Discussion in 'Wheels & Tires' started by Drock42, Sep 7, 2009.

  1. Sep 7, 2009 at 12:50 AM
    #1
    Drock42

    Drock42 [OP] Well-Known Member

    Joined:
    Aug 13, 2009
    Member:
    #21142
    Messages:
    78
    Gender:
    Male
    First Name:
    Derek
    Albuquerque, NM
    Vehicle:
    09 TRD Sport 4x4
    Toytec Coilovers, LR UCAs, OME Dakar leafpacks w/5100s, 18" 951s, 285/60 TGs (6ply), Grillcraft MX upper & lower, Wet Okole seat covers, Rec-rac bike racks
    I've seen alot of "biggest tire on stock suspension" posts for 16 and 17 inch rims, but what about 18s on a stock 09 4x4 Sport Dbl. Cab? The wheels in question are 18x9 with 4.5 bs & -12 offset. I've searched and even toyed with the tire size calculator, but I haven't found anyone running 18s without a lift and the calc seems more theoretical than definitive. If I were to stick to a 17 inch wheel, I know 265/70 is the biggest I can go. But is that just on the stock wheel? What about an aftermarket one that's wider? What does that do to the fitment? If the rim is wider would going to a 275 be the way to go? Ideally, I want to go 18s with the biggest tire possible. Thanks for any help on this! I'm itching to get some new wheels!
     
  2. Sep 7, 2009 at 1:22 AM
    #2
    RelentlessFab

    RelentlessFab Tacoma offroad armor fabricating beast Vendor

    Joined:
    Feb 17, 2008
    Member:
    #4772
    Messages:
    14,195
    Gender:
    Male
    First Name:
    Eric
    Eastern side of the Sierras: Sparks, NV
    Vehicle:
    07 SR5 4x4> 03 SR5 4x4 total> 14 Crewmax TRD
    Had tons on the old Taco's.... new Tundra is pretty stock
    The width of the wheel will affect fitment somewhat, but the BS/offset is more crucial. That -12mm offset will stick the wheel/tire out a bit and therefor give a larger arc when turned L&R. I dont know alot about what sizes you can find in 18's, but some examples that should fit would be:
    265/65/18 ~ 31.5x10.5R18
    275/60/18 ~ 31x10.8R18
    285/60/18 ~ 31.5x11.2R18
    Some minor trimming and removal of the front mud flaps may be necessary with the larger of these sizes. Ideally a wheel closer to a 0 offset, or even very slightly positive offset, would be better than that -12 spec on the wheels you're looking at for trying to fit the tallest size possible. If you were wanting a wide tire, then you would want to stick to the negative, or 0 offset as a positive offset on the wheels may give rubbing issues on the UCA with a wide tire.
     
  3. Sep 8, 2009 at 11:24 PM
    #3
    Drock42

    Drock42 [OP] Well-Known Member

    Joined:
    Aug 13, 2009
    Member:
    #21142
    Messages:
    78
    Gender:
    Male
    First Name:
    Derek
    Albuquerque, NM
    Vehicle:
    09 TRD Sport 4x4
    Toytec Coilovers, LR UCAs, OME Dakar leafpacks w/5100s, 18" 951s, 285/60 TGs (6ply), Grillcraft MX upper & lower, Wet Okole seat covers, Rec-rac bike racks
    Thanks for the info! I'm thinking the 265/65/18 would be the best option. Is anyone running that size on here? If so, I'd love to see some pics. If not, I'll just have to do it and post some of my own. :cool:
     
  4. Nov 26, 2013 at 6:44 PM
    #4
    Tonyda239

    Tonyda239 Member

    Joined:
    Nov 26, 2013
    Member:
    #117387
    Messages:
    17
    Gender:
    Male
    First Name:
    Tony
    Bonita Springs, FL
    Vehicle:
    13 TRD Off-road on 20" KMC Hoss
    HIDS, LED'S, Westin Step Bars, 20" Hoss Wheels, plastidip badges.
    That is the same setup on the XSP model which the same height as a SR5 or TRD so you will have no issues. I am putting the same setup on mine with a 0 offset.
     
  5. Nov 26, 2013 at 6:45 PM
    #5
    Monster Coma

    Monster Coma Well-Known Member

    Joined:
    Jun 15, 2012
    Member:
    #80740
    Messages:
    25,781
    Gender:
    Male
    First Name:
    Corey
    Pittsburgh, PA/Houston, TX
    Sponsored by Mom and Dad
    4 year bump :woot:
     
To Top