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Old 09-14-2012, 12:56 PM   #1
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Might be a stupid question but.....

If I have 31 x 10.5 tires on steel rims.. How do I know if I can fit 33 x 12.5 tires on the same rims?... If I can at all.. Thanks!

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Old 09-14-2012, 01:00 PM   #2
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What size are the rims? Width most importantly.

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Old 09-14-2012, 01:03 PM   #3
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I know they are 15's but I dot know how to figure out the width
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Old 09-14-2012, 01:06 PM   #4
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I'm assuming these are aftermarket wheels? Do you know what kind?

Do you have one handy? Check the rim for a size or part number stamped on the wheel itself.
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Old 09-14-2012, 01:11 PM   #5
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Quote:
Originally Posted by RubiCobra
I'm assuming these are aftermarket wheels? Do you know what kind?

Do you have one handy? Check the rim for a size or part number stamped on the wheel itself.
Unfortunately I don't know what kind, they came with it already on the jeep, I can't find any markings on them.. I could take a picture if that would help
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Old 09-14-2012, 01:47 PM   #6
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Well since you have 10.5's now I would bet you have 15x8's

You can technically put 12.5's on those. Although I would go with 10" wide rims for 12.5's
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Old 09-14-2012, 01:48 PM   #7
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We love pictures

Take and post
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Old 09-14-2012, 02:07 PM   #8
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Here ya go
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Old 09-14-2012, 02:31 PM   #9
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Yep your good.. should be good on the bs also. to verify though do this. 3.75-4in is what you want

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Old 09-14-2012, 02:48 PM   #10
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Quote:
Originally Posted by XJ Knight
Yep your good.. should be good on the bs also. to verify though do this. 3.75-4in is what you want
Okay thank you
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Old 09-14-2012, 02:54 PM   #11
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Quote:
Originally Posted by XJ Knight
Yep your good.. should be good on the bs also. to verify though do this. 3.75-4in is what you want
I came up with 4.25 there
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Old 09-14-2012, 03:07 PM   #12
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You'll be fine. if you get any rub at all which I don't think you will at full lock either way with the 12.5in wide tires a simple washer in the steering stops will fix it.
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Old 09-14-2012, 04:06 PM   #13
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Quote:
Originally Posted by XJ Knight
You'll be fine. if you get any rub at all which I don't think you will at full lock either way with the 12.5in wide tires a simple washer in the steering stops will fix it.
Yeah I'm not worried about rub because I will be lifting it when I go to 33's I just was checking if my rims will fit with 12.5's
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Old 09-14-2012, 05:16 PM   #14
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Yeah I'm not worried about rub because I will be lifting it when I go to 33's I just was checking if my rims will fit with 12.5's
Was not refrencing rub from tire hight but from tire width. Lift does not effect whether you rub or not from a tires width, wheel back spacing is what applies to that
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Old 09-14-2012, 05:21 PM   #15
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Quote:
Originally Posted by XJ Knight
Was not refrencing rub from tire hight but from tire width. Lift does not effect whether you rub or not from a tires width, wheel back spacing is what applies to that
Yeah I gotcha. Appreciate it sir
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Old 09-14-2012, 05:23 PM   #16
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No problem
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Old 09-14-2012, 06:02 PM   #17
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Originally Posted by Blsport7 View Post
Unfortunately I don't know what kind, they came with it already on the jeep, I can't find any markings on them.. I could take a picture if that would help
Just in case you wanted to know, those wheels you have are cragar soft 8s
And there should be markings on the inside of the rim saying something like Made in USA 15x8.0 wide j.j. DOT CT&W.
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Old 09-14-2012, 06:22 PM   #18
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Quote:
Originally Posted by fourty4magjr
Just in case you wanted to know, those wheels you have are cragar soft 8s
And there should be markings on the inside of the rim saying something like Made in USA 15x8.0 wide j.j. DOT CT&W.
Cool! Thank you! But unfortunately it looks like I need new rims if I want 33 x 12.5s :/
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Old 09-14-2012, 06:39 PM   #19
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Ohh why you think you need new wheels? 15x8's with 3.75-4.25in of bs is perfect
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Old 09-14-2012, 06:45 PM   #20
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XJ KNIGHT is that you in the avatar, if it is, I think I was married to your sister?
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Old 09-14-2012, 06:49 PM   #21
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Quote:
Originally Posted by XJ Knight
Ohh why you think you need new wheels? 15x8's with 3.75-4.25in of bs is perfect
Really? I was just going by what rubicobra said about the 10inch rim with 12.5s
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Old 09-14-2012, 06:57 PM   #22
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XJ KNIGHT is that you in the avatar, if it is, I think I was married to your sister?
haha not me.. Im a relaxed lazy drunk. That guy is a intense, posibly angry drunk
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Originally Posted by Blsport7 View Post
Really? I was just going by what rubicobra said about the 10inch rim with 12.5s
For anyone who airs down for offroading a 8-9in wide wheel is what is recomended for a 12.5in wide tire as it will hold the bead the best. A 10in wide wheel will work but it's not ideal or recomended unless your 4x4 is just a mall crawler. You can air down with that wide of a wheel but not to a optimal level in most terrains.

So in the end your set. Enjoy the new tires, post pics when you get them
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Old 09-14-2012, 07:26 PM   #23
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Quote:
Originally Posted by XJ Knight

For anyone who airs down for offroading a 8-9in wide wheel is what is recomended for a 12.5in wide tire as it will hold the bead the best. A 10in wide wheel will work but it's not ideal or recomended unless your 4x4 is just a mall crawler. You can air down with that wide of a wheel but not to a optimal level in most terrains.

So in the end your set. Enjoy the new tires, post pics when you get them
Cool thanks man. Will do!

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