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What is max tire size I can put on stock 16x7 rims?

Discussion in 'Cherokee' started by SpartanRouge, Jul 3, 2018.

  1. Jul 3, 2018 at 11:51 AM
    #1
    SpartanRouge

    SpartanRouge [OP] Member

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    2003 Grand Cherokee Larado I6 4.0 2WD
    2003 GC 2x4 lifted 2.5' front and 2' in rear with spring spacers only.

    I have stock size rims 16x7 and i am wondering without considering wheel bite what is the maximum size of tire (width and height) i can put on these rims without worrying about them popping off or screwing with the dynamics.

    then i would like to know if anyone with the same lift kit as me ( or anyone who has a clue), what is the max size of tire i can put on WITHOUT any wheel bite or shaving bumpers or fenders.

    I am also considering putting 1" spacers between the rims and rotors to bring them out a bit because i feel like the wheels are tucked a bit too far into the fenders, especially in the rear, but im afraid that might screw with the alignment, which i JUST fixed with 4 adjustable ball joints and a headache of trying to get it straight on the aliment rack.

    Its only 2x4 and my baby wagon so i dont want crazy mudding tires, just nice, QUIET, semi-mean looking, ALL terrain tires... that are large of coarse.
    I did find a picture of a GC with stock rims with massive tires on it but i couldnt figure out what size they were and i think it was lifted a bit higher than mine anyway
     
  2. Jul 3, 2018 at 12:48 PM
    #2
    Prerunner1982

    Prerunner1982 Well-Known Member

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    Don't know about height as I have not messed with lifting a Grand.
    However for width the general rule is the tire should not be more than 4" wider than the wheel.
    So for you a tire that is 11" wide or less.
     
    Last edited: Jul 4, 2018
    Bob likes this.
  3. Jul 4, 2018 at 8:00 AM
    #3
    Awrench

    Awrench Well-Known Member

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    BE sure the tire shop , explains and performs - reprogramming the computer for new tire size.
    Should be FREE with install.
     
    JKBob 25 likes this.
  4. Jul 4, 2018 at 3:03 PM
    #4
    SpartanRouge

    SpartanRouge [OP] Member

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    Thank you prerunner! Is that a general rule for safety ? As in not popping off rim or something? And so with my 7” wide (if I go with traditional sizing) I can do like a 275 / 65-80 R16?

    Awrench, I work at my family owned shop so I’m going to order and put on the tires myself, we never do custom work which is why I’m asking and I wouldn’t be able to reprogram the computer / speed sensor. Is it really that important? I know the speedometer will be a little off but it wouldn’t damage anything right?
    I put slightly bigger size tire on my 96 Saturn sl2 a long time ago and I’ve tested the difference between the speedometer and GPS estimate cruising speed. But I haven’t had any transsmission issues.
     
  5. Jul 4, 2018 at 3:26 PM
    #5
    aggrex

    aggrex Well-Known Member

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    Tuffy>AEV>TTO>JW>STech>EVOcage>MagnaFlow>SpiderTrax>RockHard>TF>SpringTail>67design>Bolt>GPCA>Curt>
    Larger tires will have an affect not only on speedometer accuracy but may affect shift points from AT
     
    JKBob 25 likes this.
  6. Jul 4, 2018 at 9:29 PM
    #6
    OFFGRID

    OFFGRID Well-Known Member

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    Houston
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    Howell fuel injection, header, HEI distributor, TH350, NP208, SOA lift with YJ springs in the front & GW springs in the Rear. AMC20 with G2 1 piece chromos trussed, Dana 30 with G2 chromos and 760x ujoints and MM Stainless Hubs, Geared 4.56. Tom Woods shafts, Metal cloaks, Caged, 37" Toyo MTs.
    Each tire is different based on the manufacturer. You have to look at the specs supplied by the manufacturer and you can fudge a little. I used to put BFG ATs 33x11.50x16s (285x75r16) on my 16x6in wheels on my work trucks and they did fine. Super swamper makes a 34x11x16 designed for a 6-9in wide wheel.
     
  7. Jul 5, 2018 at 10:25 AM
    #7
    Awrench

    Awrench Well-Known Member

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    WHY does the business not do the WHOLE job - do it right?
    Do you just install and leave the customer uninformed.

    Here is an income stream and a needed service - some training and a professional scanner - you will be da tire swap guru.... likely training is free with a speedo correcting scanner. I will bet the tire journals have addressed this...
     
  8. Jul 5, 2018 at 11:56 AM
    #8
    aggrex

    aggrex Well-Known Member

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    Tuffy>AEV>TTO>JW>STech>EVOcage>MagnaFlow>SpiderTrax>RockHard>TF>SpringTail>67design>Bolt>GPCA>Curt>
    Perhaps it's a potential liability issue....for example Costco warehouse tire policy gives the tire manager the ability to refuse installation of non-OEM wheel+tire combos.
     
    JKBob 25 likes this.
  9. Jul 5, 2018 at 2:03 PM
    #9
    Awrench

    Awrench Well-Known Member

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    Sorry gang - this don;t mention issues to customers ruins my buzz, erases my mellow, - BUT I get paid to fix the BS so why do I care.... IDK.

    Your computers are not kind they know too much!
     
    JKBob 25 likes this.
  10. Jul 5, 2018 at 7:07 PM
    #10
    JKBob 25

    JKBob 25 Well-Known Member

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    Yup....had that issue. Desk guy said they could not replace tires on after market wheels...that they installed with first tires purchased thru them. The Manger later tracked me down and based on the fact they installed the after market wheels the first time. Did do the tire swap on those wheels. My opinion. Dumb ass stupid crap.
     
    aggrex likes this.

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