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Thread: Backspacing for 15 x 10 inch wide rear wheels on wagon ?

  1. #1
    Member Alice87's Avatar
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    Default Backspacing for 15 x 10 inch wide rear wheels on wagon ?

    Hey box panther brethren! Been loving my wagon I purchased several months back. I’ve put over 3k miles on her and shes been treating me very well… I’m about to start upgrading several things.

    I have searched around and have not found a straight answer on grandmarq.net

    My question:

    There are a set of 15 x 10 wheels for sale near me that have 5.5 inches of backspacing (they have the right bolt pattern). Will 5.5" BS 15x10's fit the rear of my 87’ wagon without rubbing? I can handle some minor fender rolling but I dont want to have to cut a bunch out or do anything crazy.

    Anybody run this wheel BS / size on a wagon?

    I would be running 295/50R15 size tires with the original width axle, bilstein shocks and speedway 250lb rear springs.

    I apologize in advanced if this has already been answered… but I honestly have found somewhat contradictory info by searching the site… Some posters have run 15x10” wide 4” backspacing on wagons without problem while others say 4” backspacing sticks out past the fenders? I’ve read from several posters that 5.5” backspacing is ideal for a 15x10” wheel on a sedan… but I’m unsure if that applies to the wagons?

    All the best, Kyle.
    1987 slick top Wagon

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  2. #2
    Member sluggish91's Avatar
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    What I'm running on a tudor sedan:
    275/60/15 tires
    Original width K code axle
    Bilstein shocks
    15x10 , 6.25 backspacing & 1/4 in. spacer
    Rubbed on the frame as the suspension traveled without a spacer.
    Didn't need to roll the fenders.
    "Massaged" the inner fender wells slightly.
    Hope this helps, and good luck.
    1985 2-Door
    CFI, K&N Filter, 1.6 Roller Rockers, BBK Shorty Headers, Summit H-pipe, Hooker Max Flow Mufflers,
    Flex-A-Lite Electric Fan, 3G Alternator, Race Crank Pulley, Bilstein Rear Shocks, SVE Wheels, ET Streets, 3.55 Gear

  3. #3
    Member Alice87's Avatar
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    Thanks slug, it does help. I'm thinking 5.5 BS should fit without rubbing... I wont really know until I test fit them. It's an hour drive for me but these wheels will look good on my wagon so it's worth the drive.

    -Kyle
    1987 slick top Wagon

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  4. #4
    Member sluggish91's Avatar
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    Quote Originally Posted by Alice87 View Post
    Thanks slug, it does help. I'm thinking 5.5 BS should fit without rubbing... I wont really know until I test fit them. It's an hour drive for me but these wheels will look good on my wagon so it's worth the drive.

    -Kyle
    Hope you get them and they work for you. Post a picture if you do.
    1985 2-Door
    CFI, K&N Filter, 1.6 Roller Rockers, BBK Shorty Headers, Summit H-pipe, Hooker Max Flow Mufflers,
    Flex-A-Lite Electric Fan, 3G Alternator, Race Crank Pulley, Bilstein Rear Shocks, SVE Wheels, ET Streets, 3.55 Gear

  5. #5
    Member Alice87's Avatar
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    Mocked the wheels up and they are ok... seem to have a decent amount of clearance on the inside next to the frame. Honestly cant tell much until I get the 295/50r15 tires and get it on the ground. I'm gonna install the bilstein's and speedway springs at the same time as the new wheels... I'm excited to get it all installed and done, just not so excited about trying to access the top nut on the rear shocks though lol.

    Attached some photos below. The new springs weigh in at 20lbs each for the front and 12.5lbs each for the rear pigtails. The wheels weigh about 18.5lbs each... not too bad for 10" wide wheel I suppose.
    Attached Thumbnails Attached Thumbnails IMG_5713.jpg   IMG_5711.jpg   IMG_5691.jpg   IMG_5696.jpg   IMG_5698.jpg  

    IMG_5701.jpg   IMG_5699.jpg  
    1987 slick top Wagon

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  6. #6
    Member clutch47's Avatar
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    That'll be SWEEEET...
    All FORD All The Time

  7. #7
    Member Alice87's Avatar
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    I got the tires mounted & balanced, the blue paint they put over the letters is a pain to remove. Scrubbing with hot water finally got it off. I'll try and get them installed tonight and post up pics later... Of course it just started raining and it's 40 degrees out
    I'm gonna back the wagon into the garage and get started, too impatient to wait till it warms up and dries out.
    Attached Thumbnails Attached Thumbnails IMG_5787.jpg   IMG_5788.jpg   IMG_5792.jpg   IMG_5791.jpg  
    1987 slick top Wagon

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  8. #8
    Member Alice87's Avatar
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    Well they fit with room to spare!

    Its rainy and crappy outside + the wagon hasn't been washed in a decade so not the best pics... when it gets dry out ill wash the wagon and take better pics.

    here soon I'll installed the shocks / speedway springs and save up for some matching 15x8 front wheels.
    Attached Thumbnails Attached Thumbnails IMG_5801.jpg   IMG_5807.jpg   IMG_5813.jpg   IMG_5811 - Copy.jpg   IMG_5826.jpg  

    1987 slick top Wagon

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  9. #9
    Wagon Addicted Tiggie's Avatar
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    Looks like a perfect fit to me. Also makes me second guess my decision to put mine out to pasture.
    1988 Crown Vic Wagon - daily
    1990 Country Squire - weekend cruiser, former lawn ornament
    Other: 95 Ranger, 74 F250, 68 Mustang, 94 Mustang
    Sold: 1982 LTD and 1987 Crown Vic

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  10. #10
    Beater gonna beat sly's Avatar
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    How much space between the inside of the tire and the control arm?

    Only two things are infinite, the universe and human stupidity, and I'm not sure about the former. -- Albert Einstein
    rides: 93 Crown Vic LX (The Red Velvet Cake), 2000 Crown Vic base model (Sandy), 2003 Expedition (the vacation beast)
    Quote Originally Posted by gadget73
    ... and it should all work like magic and unicorns and stuff.
    Quote Originally Posted by dmccaig
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  11. #11
    Member Alice87's Avatar
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    There's about 1.5" of clearance from the frame-rail to the tire. The control arm has a decent amount of clearance; Here's a couple of pics of the inside clearance sly:
    Attached Thumbnails Attached Thumbnails IMG_5797.jpg   IMG_5809.jpg   IMG_5823 - Copy.jpg  
    1987 slick top Wagon

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  12. #12
    Member a_d_a_m's Avatar
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    Looks great. Makes me wish I'd have taken the plunge on 9 or 10" width wheels for the back...
    '91 LTD Country Squire LX | 2010 P7B | '03 Marauder

    formerly: '02 MGM, '04 MGM, '04 MGM v2.0, '04 MM, '07 P71 w/5-speed, '03 SAP P71, '04 CVLX (now in pantera77's stable)

  13. #13
    The Brown Blob 87gtVIC's Avatar
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    I like it.
    ~David~

    My 1987 Crown Victoria Coupe: The Brown Blob
    My 2004 Mercedes Benz E320:The Benz

    Quote Originally Posted by DerekTheGreat View Post
    But, that's just coming from me, this site's biggest pessimist. Best of luck

  14. #14
    Member Alice87's Avatar
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    I'm loving it. So far I've driven it about 30 odd miles and haven't gotten any rubbing at all... and that's with the sagging original springs and ruined shocks. I'm genuinely surprised as I figured it would rub a little on the outer fender lips with the waterbed suspension, but so far no rubbing at all. I'm think with the speedway spring's & bilstein's it will be fine as well.

    For an all season tire, these grip pretty decent. There's this up hill stop light in town where I always get some wheel spin when its wet; today I got zero wheel spin. Nice improvement overall for sure.
    1987 slick top Wagon

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  15. #15
    Beater gonna beat sly's Avatar
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    Yeah... that fits really well. Also, you shouldn't get any rubbing without riding the bump stops. Lots of room up inside those wheel wells. At least if the sedans are any clue.
    Attached Thumbnails Attached Thumbnails Flex1a.jpg  

    Only two things are infinite, the universe and human stupidity, and I'm not sure about the former. -- Albert Einstein
    rides: 93 Crown Vic LX (The Red Velvet Cake), 2000 Crown Vic base model (Sandy), 2003 Expedition (the vacation beast)
    Quote Originally Posted by gadget73
    ... and it should all work like magic and unicorns and stuff.
    Quote Originally Posted by dmccaig
    Overhead, some poor bastards are flying in airplanes.

  16. #16
    Member Alice87's Avatar
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    Damn sly, that pic makes me feel better about it lol.

    The sun came out for a bit and it dried out some. Still haven't washed the wagon but here’s a few more pics of the stance anyway:
    Attached Thumbnails Attached Thumbnails IMG_5860 - Copy.jpg   IMG_5857 - Copy.jpg   IMG_5855 copy.jpg   IMG_5854 copy.jpg   IMG_5833 copy.jpg  

    1987 slick top Wagon

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  17. #17
    Member sluggish91's Avatar
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    Looks good, big car needs big wheels.
    1985 2-Door
    CFI, K&N Filter, 1.6 Roller Rockers, BBK Shorty Headers, Summit H-pipe, Hooker Max Flow Mufflers,
    Flex-A-Lite Electric Fan, 3G Alternator, Race Crank Pulley, Bilstein Rear Shocks, SVE Wheels, ET Streets, 3.55 Gear

  18. #18
    Member Alice87's Avatar
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    Well it's time for an update... I’ve been stuck at home due to this covid-19 crap. DFW has been taking it fairly seriously so all non essentials are being grounded.

    The silver lining is I’ve been able to focus on the wagon a bit more. A few weekends ago I installed the speedway springs and bilstein shocks on all 4 corners. I also installed some new lower HD ball joints since the control arm was out of the spindle.

    Its hard to tell from my crappy pics... but the car sits much more level than it did before:





    Since I lowered it I did get a tiny bit of rubbing on the inside fender against the upper side wall. I used a hammer to clearance the inner fender and it seems to be fine now. I can take pics of where I clearanced... it only rubbed on hard cornering and when going over huge speed bumps. Regular driving it was fine.

    It was a pita to do the front end to say the least. Hammering on the spindle to get the balljoint popped out was without a doubt the worst part of the job. The back was very easy in comparison. I was worried about the top shock nut spinning with the shaft... but the shaft stayed in place making it a breeze. Well not exactly a breeze it was just less of a pita than the front lol.
    Anyways it was well worth it to say the least. The car handles and rides so much better!
    Attached Thumbnails Attached Thumbnails IMG_6082 - Copy.jpg   IMG_6113.jpg  
    Last edited by Alice87; 04-24-2020 at 05:50 PM.
    1987 slick top Wagon

    Search "photobucket embed fix" to remove watermark from photos

  19. #19
    Member Alice87's Avatar
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    Next project will be replacing all the steering. I purchased just about everything: Steering gear box, inner/outer tie rods/sleeve adjusters, rag joint, pitman arm, idler arm, power steering pump/ return hose/supply line. I think i may be missing somethings but for the most part im completely redoing all the steering. All the original stuff is just knackered beyond their useful days.

    I also got a set of matching 15" x 8" soft 8's with 4.5" of backspacing for the front... I got them mocked up but haven't taken any good pics yet.

    With the mods I have planned for the wagon, I need to start a build thread already!

    -Kyle
    1987 slick top Wagon

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  20. #20
    The Brown Blob 87gtVIC's Avatar
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    Looking good. Will look amazing with the matching fronts.
    ~David~

    My 1987 Crown Victoria Coupe: The Brown Blob
    My 2004 Mercedes Benz E320:The Benz

    Quote Originally Posted by DerekTheGreat View Post
    But, that's just coming from me, this site's biggest pessimist. Best of luck

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