Wider wheels on the Rear

Discussion in 'SRT Hellcat Wheels and Tires' started by Dr. Joseph P. Mulligan, Nov 27, 2014.

  1. Dr. Joseph P. Mulligan

    Dr. Joseph P. Mulligan Hellcat Member

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    I want to put a wider wheel and tire combo on the rear of my new hellcat. Im a major fan of the vapor black chrome the is on my grand cherokee srt. I want to stay with 20's. What is the largest width i can safely get on the rear tires/wheels. If I can get an 11 or 12 inch wide tire in the rear and still stay flush with the fender the same as the stock wheels/tires do it would be great...

    What is the max width???
    How do I go about Ordering the wheel and tire combo?
    Who can I order it from?
    Will a set of oem grad cherokee srt wheels accomplish this?? Front and rear???
     
  2. Coldheartid

    Coldheartid Silver Member

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    I have 22"x10.5" wheels with 295/30 ZR22 on the rear of my 2010 SRT8. When on a lift the tires barely touch the plastic inner fender. When the car is on the ground there is almost 1/2" gap in that same location. I can see no reason why a 20"x10.5" wheel will not fit.

    However,
    I believe there are some difference in the Hellcat suspension, I think I heard it was lowered 1/2" for aerodynamic reasons, better top end. Bottom line is I will wait until I get the car to check this out and then go as wide as I can.
     
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  3. X-Men Fiend

    X-Men Fiend Gold Member

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    My understanding is that SRT went with the biggest wheels they could fit, without changing the Challenger's wheel well. But, if you don't throw more than one or two petite hotties in the backseat at once, and stick to the Sport Mode for a firmer suspension than 'street' setting provides, maybe some more rubber can get squeezed under? Otherwise, it might necessitate a switch to a slightly wider, but slightly lower profile, tire, and stock width wheel? Hard to say, until some Hellcat owners start trying it, and driving on it, to see if there is any rubbin'...
     
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  4. Tammie

    Tammie SRT Hellcat Moderator Staff Member Gold Supporting Member

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    If you go to the main forum page, there is a thread on wheels and tires and even more discussion on it. Now that some Hellcats are out there, we should get some answers on this! Can't wait to find out what will work!;)
     
  5. Smoothgangsta

    Smoothgangsta Hellcat Member

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    I am new here, but contemplating the purchase of a Hellcat at some point once some of the outrageous dealer antics are under control and the market inventory increases.

    Be that as it may, I thought I would offer up these 2 website links, they have served me well in the past when trying to get a visual representation of how a new tire or wheel are going to look and fit compared to the factory setup. For me they have come in handy when trying to get an overall idea of how tires will measure up when stepping up in size and also how rim size, width and offset will be impacted between the original and a newer wheel setup.

    Tire size calculator visual -
    Tire size calculator

    Wheel and tire size comparison -
    Custom rims wheel tire packages for your ride - RIMSnTIRES.com

    Does anyone happen to know what the factory offset on the 20" Hellcat wheel is?
     
    Last edited: Dec 8, 2014
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  6. Smoothgangsta

    Smoothgangsta Hellcat Member

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    NM, I found my answer 20x9.5 18.5mm offset.
     
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  7. White Trash

    White Trash BMF Hellcat Car Club HCC Charter Member HCC National Vice Pres.

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    Contact
    Triumph Performance Wheels in So Cal.
    They are the custom wheel designer for the Fast and Furious Dodge cars.
    Bismark is the owner Pure car guy.
    Hands Down best wheels money can buy.

    WT
     
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  8. KC4

    KC4 Rookie

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    New to the forum but been enjoying my Challenger Hellcat for a few months now. Huge issues putting power to the wheels with the stock Perelli P-Zero 275/40/20 tires, although I love Perelli tires on other cars, the Hellcat has way to much power for them.

    Just installed Nitto NT555R 305/35/20 tires on the rear and I must say they hook really really well! Cost was $460 each installed and fits the stock rims. I did extensive research and 95% sure this is the biggest tire that will fit, if you want bigger you will have to get new rims. That said, I don't see any reason why 315 tires wouldn't fit, but I would do your research before.

    Second, I was planning to install Eibach pro springs that would lower the car about 1", but after installing the 305 tires I am a little worried about rubbing, in Street drive mode. I think Sport/Track modes are stiff enough to not be a problem. If you install 315's it may be even closer to rubbing if you decide to lower. As you can see, the 305 tires are slightly wider than the car fender and look great!

    The stock 275/40/20 tire is already a HUGE tire, the Nitto 305 is impressively larger!

    (I hope this ins't to many pics)

    2015-04-22 15.12.36.jpg 2015-04-23 14.39.26.jpg 2015-04-23 14.40.57-2.jpg 2015-04-23 14.41.17.jpg 2015-04-23 14.38.59.jpg 2015-04-23 14.38.42.jpg
     
    Last edited: Apr 25, 2015
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  9. MaxxMuscle

    MaxxMuscle Gold Member Hellcat Car Club HCC Charter Member

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    That looks great.Have the same set of tires sitting in my office.Now if I could just get my car in to put them on :mad:
     
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  10. KC4

    KC4 Rookie

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    I waited 60 days or so, delivered in January. Really impressive car!
     
  11. Hell-Bent

    Hell-Bent Silver Member

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    Does Eibach make anything for the Hellcat yet?
     
  12. KC4

    KC4 Rookie

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    not sure. I'm assuming the springs are the same fit across all Challenger SRT's. I will have to do some research there before purchasing. can probably reference the OEM part numbers to see if the same. will let you know if I do it.
     
  13. Titletaker

    Titletaker Hellcat Member

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    looks good
     
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  14. badash

    badash Silver Member

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    looks good
     
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  15. CO Springs Sublime Kitty

    CO Springs Sublime Kitty Gold Member

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    Tires look great, same tires I'm looking at. Did you leave the stocks on front or did you put 555s up front?
     

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