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

Buying used to fit 285s, what measurement ranges for 16" wheels?

Discussion in 'Wheels & Tires' started by Chickenmunga, Jan 18, 2011.

  1. Jan 18, 2011 at 1:53 PM
    #1
    Chickenmunga

    Chickenmunga [OP] Nuggety

    Joined:
    Apr 10, 2008
    Member:
    #5877
    Messages:
    6,946
    Gender:
    Male
    First Name:
    Mike
    Hillsboro, Oregon
    Vehicle:
    08 TRD Offroad DC 4x4 (read the build)
    I'm pounding away on craigslist for good deals on wheels, and I'd like to know how to measure them to fit my needs.

    -I'm moving up to 285/75/16, most likely Duratracs or BFG AT. I'm a daily driver but I like to wheel when I can
    -I want 16" wheels
    -I don't want spacers

    What measurement ranges do I need to stay within for backspacing and offset?

    For instance, I know 4.5 BS, but is that a hard factor or can I give a little one way or another?
    I noticed that backspacing and offset are related, do I need measurements for both or can I pay attention to just one?
     
  2. Jan 18, 2011 at 2:13 PM
    #2
    KPT

    KPT sees what you did there.

    Joined:
    Sep 3, 2009
    Member:
    #22227
    Messages:
    32,339
    Gender:
    Male
    Vehicle:
    09 Prerunner
    Katskin leather interior, Satoshi grille, Bilstein 5100's @ 1.75, rear leaf TSB, magnaflow exhaust, 18x9 BBS RW's, 275/65/18 Nitto TG's, black headlights, black taillights, Hella Supertones, weathertechs, EFX tri-fold tonneau, n-Fab steps
    4.5" BS has shown to be the best fit for least amount of rubbing. People with 4.25" or 4.75" tend to have more rubbing than those at 4.5".

    4.5" is a pretty common backspacing so it's not hard to find an aftermarket rim with that spec.

    Backspacing is much more important than offset. For a given backspacing, offset will vary depending on rim width.

    For instance, both of the following rims have 4.5" backspacing
    16x8, 0 mm offset
    16x9, -12 mm offset.
     
  3. Jan 18, 2011 at 2:15 PM
    #3
    KPT

    KPT sees what you did there.

    Joined:
    Sep 3, 2009
    Member:
    #22227
    Messages:
    32,339
    Gender:
    Male
    Vehicle:
    09 Prerunner
    Katskin leather interior, Satoshi grille, Bilstein 5100's @ 1.75, rear leaf TSB, magnaflow exhaust, 18x9 BBS RW's, 275/65/18 Nitto TG's, black headlights, black taillights, Hella Supertones, weathertechs, EFX tri-fold tonneau, n-Fab steps
  4. Jan 18, 2011 at 2:32 PM
    #4
    Chickenmunga

    Chickenmunga [OP] Nuggety

    Joined:
    Apr 10, 2008
    Member:
    #5877
    Messages:
    6,946
    Gender:
    Male
    First Name:
    Mike
    Hillsboro, Oregon
    Vehicle:
    08 TRD Offroad DC 4x4 (read the build)
    What about those off-size backspacing? Looking at tirerack I only see 4.55, 4.48, etc., so I'm guessing there's some leeway, then they make a 'significant' jump to 4.75" range... I don't have to worry about 4.6" for instance?


    I was worried if offset could vary wildly, looks like you say it doesn't matter. At least there's one thing less to worry about :)
     
  5. Jan 18, 2011 at 2:35 PM
    #5
    KPT

    KPT sees what you did there.

    Joined:
    Sep 3, 2009
    Member:
    #22227
    Messages:
    32,339
    Gender:
    Male
    Vehicle:
    09 Prerunner
    Katskin leather interior, Satoshi grille, Bilstein 5100's @ 1.75, rear leaf TSB, magnaflow exhaust, 18x9 BBS RW's, 275/65/18 Nitto TG's, black headlights, black taillights, Hella Supertones, weathertechs, EFX tri-fold tonneau, n-Fab steps
    There are folks who have fit 33's on 4.75" BS, it just requires a bit more trimming. So there's certainly a little wiggle room when you are talking about a difference of only 0.05" on some of those options.
     
To Top