Biggest wheel/tire combo under a 68 Charger?

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  1. RonnieK

    RonnieK Member

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    Hi all,

    Got a 68 Charger I'm just about finished up with. Last piece is the rear-end and I'm looking at wheels and the biggest ET Slick on a 15" wheel possible.

    Does anyone know if a 28x10 on a 15'' wheel will fit under there? What's the biggest tire you've put under your 68 Charger? No tub modifications have been made, just put disc brakes on it.

    Also found a video that advertises a tire/wheel simulator. Looks like an arm off a flange that mounts to the rotor, literally measures everything from offset to backspace. Anyone have any of these for sale or know where I could find one?

    Thanks in advance! New to the site. Excited to chat B-Bodies with y'all! Hoping to get 12's out of my Charger.

    269591856_5296741993686656_6359820931392728126_n.jpg
     
  2. Superbeemike

    Superbeemike Well-Known Member

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    I believe the Charger wheel wells are very similar to the Coronet/SuperBee. I’m running 15x10’s with 5.5 bs and a 295/50R15 tire. My tire is 26.5 tall with a 12” section width and 10” tread width. My car is lowered 1” with a block. No rubbing unless under hard cornering loads, then the inside edge rubs the wheel house. I did add a 1/4 billet spacer since I track my car and had a slight rub in the corners. I wouldn’t be too concerned about what you’re trying to fit. Here’s a link to my build.
    -Mike

    https://www.forbbodiesonly.com/mopa...s-and-road-courses-my-super-bee-setup.220738/
     
    Last edited: Jan 23, 2022
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    • 33 IMP

      33 IMP FBBO Gold Member FBBO Gold Member

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      I've got a 10.5x28 slick on a 62 savoy, and I KNOW the charger wheelhouse is bigger. Same tire/wheel combo fits easily on my 69 rr.
      Just get the backspace right, should be no problem at all .
       
    • Hey-O

      Hey-O FBBO Gold Member FBBO Gold Member

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      Welcome from Missouri!!
       
    • davek

      davek FBBO Gold Member FBBO Gold Member

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      welcome to the site,can you post some more pics of the charger please we love pics.
       
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      • 68sprtsat383

        68sprtsat383 FBBO Gold Member FBBO Gold Member

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        Welcome
         
      • Zeppelin264

        Zeppelin264 Well-Known Member

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        5.5" backspace is the magic number for the larger tires. I run a 275/60/15 with a 4.5" backspace rim and it works fine.
         
      • 65Bel

        65Bel FBBO Gold Member FBBO Gold Member

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        Welcome to FBBO Ronnie!! Post more pix of your project if you will ...
         
      • polywideblock

        polywideblock FBBO Gold Member FBBO Gold Member

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        G, day from Australia:welcome:
         
      • ckessel

        ckessel Well-Known Member

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      • Carcinogen

        Carcinogen Well-Known Member

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        Ive run 295/50-15.

        But be aware like mentioned they can rub while cornering, add a big bump/dip while cornering at high speed can rub hard enough to throw you sideways.
         
      • Budnicks

        Budnicks You Can Just Thank Me Later FBBO Gold Member

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        Welcome to FBBO

        there's probably 1,000+ posts here that cover tire fitment
        check-in the Racers Hangout & Resto-Mod & Pro Touring
        Forums also

        good luck

        I run 15" P295/50/15s Radial T/A on a 68 RR on the rear
        appr. 28" tall 12+" girth
        no rubbing issues ever (P245/60/25 front)
        most B-bodies 1968-70 can fit a lot of tire

        IIRC I had N50/15s (Biasply) 29"x11" Tread, appr. 12.5" girth
        on my old 68 Charger
        on 10" Crager S/S with IIRC 5.5" BS, way back when

        I have ran 315/60/15 M/T Sportsman Drag Radials on my old 68
        near 30" (29.?) diameter on a 15x9" wide wheel 5.25" BS
        no rubbing ever

        ride height can make a huge difference too
        if it's lower you could have clearance problems
        with the upper outer (inside) portions
        of the inner rear wheel-wells/tubs
        IMO with a stock tub, the biggest issues are the hump in the
        'top outside portions" of the inner wheel wells
        But;
        the right wheel offset/BS is critical

        old photos 68 RR P295/50/15 Radial T/As
        68 RR 295-50-15 Radial TA rear Tire #2 leaf clearance.JPG

        68 RR 295-50-15 Radial TA on Edelbrock 15 x 9.5in w-5in BS outer lip clearances.JPG
         
        Last edited: Jan 23, 2022
      • hunt2elk

        hunt2elk FBBO Gold Member FBBO Gold Member

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        295/50's are 26.5" tall. You must be thinking about 275/60's, they are 28" tall.
         
      • 33 IMP

        33 IMP FBBO Gold Member FBBO Gold Member

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        You can ask what others have done, and we will help as best we can, but..... our BEST advice is to do your own measuring. These old mopars vary, and we don't know what has been done to your car, or how it sits (stance). All that stuff affects what fits.
        If you have a fairly large tire on it now that fits, you can use it to gauge how much more you can add, and what backspace you need. And Budnicks is ABSOLUTELY right, getting the backspace right is CRITICAL. If the wheel is in the right place, that is the first step to getting the most tire under the car.
        Find out what backspace you need, (the disc's on the back will have an effect) find a wheel you like with that backspace, then decide how much tire you can put on it.
         
      • cdr

        cdr FBBO Gold Member FBBO Gold Member

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        I had 15x10 4 7/8 BS, with 325 50 15 MT Drag Radial, rolled outer wheel well, only rubbed on the hump that in made into the outer well when hitting a large bump, caused no damage or marks on the tire, also when turning into my sharp,steep drive way it would just touch the inner wheel house, put a rear sway bar on it & that cured that, now have 390 45 15 M&H , only hits on a large bump, still NO tire damage, this is the 325 50 15 , the bottom is the 390 . 92225829_2927939300598093_8899167310984511488_n.jpg
         
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        • HD539

          HD539 FBBO Gold Member FBBO Gold Member

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          Welcome from Washington State.
           
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