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Unread 09-30-2013, 08:21 PM   #1
TheBootlegger
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1995 YJ Wrangler 
 
Join Date: Aug 2013
Location: Montreal, QC
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Spacers or adjusting steering stops?

Hello all,

I recently bought 33x12.5x15 MT tires and I know a bunch of people are against spacers and I was suggested to adjust the steering stops instead of widening my tracks. I have no idea what my rims size is other that its 15"x??".

So question 1: Is there a way to calculate the depth of my rims and the backspacing?

2: Up to what width can you roll no spacers without rubbing? Any one riding with the same size tire as mine without spacers?



I know i'm not giving a lot of info but thats all I got, so thanks for any useful comments! (or unuseful who am I to judge lol)

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Unread 09-30-2013, 09:00 PM   #2
Joe Dillard
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Join Date: May 2004
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Backspacing:

http://www.4wheelparts.com/tire-whee...ckspacing.aspx

Not all tires are created equally.

EG: All 33's are not 33" tall. Some are closer to 32's while some are taller than 33". Plus, the 12.5" widths are not the same, especially when coupled with a narrow wheel like a 15x7. The narrow wheel will allow for the same exact size tire to be able to be ran on a different sized wheel without rubbing due to the narrower wheel even if the backspacing is exactly the same.
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Unread 09-30-2013, 11:08 PM   #3
fratis
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You can manually space your wheel outwards and see how much it takes before the rubbing is alleviated. 1/4" and its easier to adjust the stops. More then that and you might want spacers.
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Unread 09-30-2013, 11:26 PM   #4
Dake
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Id just start add washers under the stops and see how much it cuts down your steering. Id try this first spacers are not cheep.
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Unread 10-01-2013, 12:53 AM   #5
bill8bud
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It should not take much to add washers for spacers. Mine took two very thin washers to limit my steering with 33s.
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Unread 10-01-2013, 03:42 AM   #6
SeanB95YJ
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stock YJ wheels are 15x7, and the backspacing is somewhere around 5"

if you look at tire manufacturer specs, most if not all will say a 7" wheel is too narrow for a 33x12.5 - though in real life, some people run them with no noticeable issues at all.
most mfrs will call for a wheel 8-10" in width for that tire.

on to the other issue of backspacing and rubbing on a wide tire. I'm currently running stock wheels with 31x10.5 tires and I rub slightly at full lock. For me, it's far enough at the end of the turn that I don't bother with adjusting the steering stops - if I hear/feel it rub, I just back off the wheel a little. if I were running a 12.5 on the same wheels I'd definitely have to do something about the backspacing because I feel adjusting the stops for that combination would lose too much turning radius.

you CAN run spacers and in reality, if you get a decent spacer and they are torqued properly upon install (and loctite is used on the studs holding the spacers on) you'll be just fine. the nay-sayers will often comment how a spacer adds leverage to the wheel and will shorten the life of your bearings... true to a point, but no more leverage than using a wheel with less backspacing.

but for about the same cost as a set of decent spacers, you can get a set of brand new set of steel wheels in 15x8 with about 3.5 - 3.75" backspace and be ahead of the game as you'll now have a proper size wheel for the tires you've got mounted
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[FONT="Comic Sans MS"][COLOR="Blue"]Sean B. - Schenectady, NY - 95 YJ, 350/700r4/NP241, JB Shorty SYE, 8.8 rear, 2" BDS, 1" homebrew shackles, Daystar 1" BL, TJ flares, 35x12.50 General Grabber AT2 on 15x10 Bart D-Truckers, Polyshield polycarbonate windshield, HD over/under crossover steering
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Unread 10-01-2013, 10:43 PM   #7
TheBootlegger
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I believe my wheels are 15"x8" with no offset. The infos you guys gave me are pretty useful so thanks!
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