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  1. #1

    Default Anyone with a 2500 Suburban, please help!!

    If anyone can help answer this before I make the purchase, I would really appreciate it. The tires shops dont seem to know squat about it.

    I have an 07 4wd suburban with stock 16's on it. I want to change the wheels to 20's with a 285/55 R20 tire. Will they rub, especially when I am towing my travel trailer? Its about 7K lbs.

    Thanks to anyone that can help.

  2. #2
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    stephan's Avatar
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    Hey DP welcome to the club. A lot of your fitment success is going to depend on the backspacing of the wheels you choose, as much as the wheel diameter, tire size, diameter, circumfrence, & section width. Too much backspacing & they'll rub on the suspension, too little backspacing & they'll rub on the outside. I would google the major tire manufacturers & check their "tire/wheel fitment guides". Mickey Thompson, Dick Cepek, Tire Rack all have them & they know right up front what will & won't fit cuz they've done all the research.
    1988 Chevy C-3500 2wd (no pic)
    350 c.i. 5.7 L Stock Block, 4 Bolt Mains
    L-31 Vortec Heads, Edelbrock Cam & Intake,
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    3" susp. lift kit "shadetree"
    No rev limiter, No speed limiter lol


  3. #3

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    Welcome to the club.

  4. #4
    Sr. Engineer marko54's Avatar
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    Default

    Quote Originally Posted by dphd View Post
    If anyone can help answer this before I make the purchase, I would really appreciate it. The tires shops dont seem to know squat about it.

    I have an 07 4wd suburban with stock 16's on it. I want to change the wheels to 20's with a 285/55 R20 tire. Will they rub, especially when I am towing my travel trailer? Its about 7K lbs.

    Thanks to anyone that can help.

    My 07 2500 is leveled out and i went with 265 Duratracs. when i back out of my driveway and turn the wheel hard right, i get a slight rubbing but thats about it so not sure bout 285's.

    2007 Suburban 2500 Edge evolution CS leveled 265 goodyear Silent Armor Pro Grade Kenwood DNX6180 Nav.Radio





    OH Goody, another Pickem up truck dripping with Chrome Crap!

  5. #5

    Default

    Quote Originally Posted by stephan View Post
    Hey DP welcome to the club. A lot of your fitment success is going to depend on the backspacing of the wheels you choose, as much as the wheel diameter, tire size, diameter, circumfrence, & section width. Too much backspacing & they'll rub on the suspension, too little backspacing & they'll rub on the outside. I would google the major tire manufacturers & check their "tire/wheel fitment guides". Mickey Thompson, Dick Cepek, Tire Rack all have them & they know right up front what will & won't fit cuz they've done all the research.
    Thanks for the welcomes and responses. I have gone on a bunch of the sites and when I enter the 2500 suburban, in my year, it always tells me that I only have 16" wheel options. I dont know if its because they didnt make very many 3/4 ton suburbans in the new body style or what the deal is. I have been researching and researching, even dealing with several tire and wheel shops. Its been frustrating trying to figure it out. Hopefully more members here chime in that have the same vehicle as me. Anyway, thanks again. I appreciate it.

    ---------- Post added at 08:28 AM ---------- Previous post was at 08:21 AM ----------

    Quote Originally Posted by marko54 View Post
    My 07 2500 is leveled out and i went with 265 Duratracs. when i back out of my driveway and turn the wheel hard right, i get a slight rubbing but thats about it so not sure bout 285's.

    That looks good, do you know what the exact parts you purchased to level it and what is the benefit to leveling? I think what I need to figure out is how much bigger the actual diameter of the total wheel and tire when I change to 20" rims. I know the sidewall is lower if I am going with 285/55, but I dont know how much difference it calculates to with the bigger wheel itself.

  6. #6

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    I have 285/75 r16, roughly 33 inch, right front rubs sway bar just a little on a left hand turn. Like they said, depends on back spacing and tire size is going to be a little different being a 20 rim. Unfortunatly it cuts the final gear ratio to about a 3.42 from a 3.73. Takes away some torque

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