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Old 06-02-2005, 02:37 PM   #1 (permalink)
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Question Wheel Backspacing

I have a 2000 Jeep Wrangler Sahara all stock for the time being. I want to add a 3 inch body lift, 33X12.5R15 BFGoodrich Mud Terrain tires, and 15x10
Pro Comp 1079 series rims. So, what backspacing would i need on my 15x10 rims in order for the tires to stick out from the wheel fenders? Note: the Sahara fenders are wider than the Wrangler Sport fenders. Also, with a 3" body lift, will there be a large gap between the body and bumper?
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Old 06-02-2005, 03:00 PM   #2 (permalink)
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better put on the nomex suit dude...
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Old 06-02-2005, 03:06 PM   #3 (permalink)
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There is a new 5" body lift kit out now. That will clear those 33's better. I'd do with 1.5" backspace if you can get it. If not get 2" wheel spacers and you'll be fine. Remember when you go with a big tire like 33's you'll need to regear the jeep. I would do with 5:38 gears. You can do one axle at a time, but I'd start with the rear first. Remember the trail will be way eaiser with those 33's




















































must be dumb fuct thursday
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Old 06-02-2005, 03:10 PM   #4 (permalink)
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Quote:
Originally Posted by mcg30stjude
I have a 2000 Jeep Wrangler Sahara all stock for the time being. I want to add a 3 inch body lift, 33X12.5R15 BFGoodrich Mud Terrain tires, and 15x10
Pro Comp 1079 series rims. So, what backspacing would i need on my 15x10 rims in order for the tires to stick out from the wheel fenders? Note: the Sahara fenders are wider than the Wrangler Sport fenders. Also, with a 3" body lift, will there be a large gap between the body and bumper?

Do you know how to add and subtract ?
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Old 06-02-2005, 03:22 PM   #5 (permalink)
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Look, I know what backspacing means and am looking at some 15x10 pro comp rims w/ 3.6" backspacing....I just want to know if this will be sufficient for the tires to stick out a bit from the fenders before I purchase them on ebay.....Simple question....
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Old 06-02-2005, 03:25 PM   #6 (permalink)
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find out the backspacing on your current wheels, and voila there's your answer.
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Old 06-02-2005, 03:27 PM   #7 (permalink)
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Quote:
Originally Posted by mcg30stjude
Look, I know what backspacing means and am looking at some 15x10 pro comp rims w/ 3.6" backspacing....I just want to know if this will be sufficient for the tires to stick out a bit from the fenders before I purchase them on ebay.....Simple question....

The mall police may cite you for that infraction.
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Old 06-02-2005, 03:28 PM   #8 (permalink)
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No they won't stick out at all. Better look for 12" wide rims if that is your goal...

Did you read the Jeep forum FAQ??
/forum/jeep-hardcore-tech/281516-official-jeep-talk-faq.html
Or this one?
/forum/jeep-hardcore-tech/241603-read-before-posting-you-newbie-fawkers-aka-j-t-m-s.html
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Old 06-02-2005, 03:32 PM   #9 (permalink)
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if you know what backspacing is, and you have a tape measure, you can answer your own question with minimal head scratching.
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Old 06-02-2005, 07:57 PM   #10 (permalink)
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Don't let these guys give you a hard time. . .they are assholes.

Just go and get some 7" backspaced wheels and 1.5" wheel spacers. Don't forget to get the reduced trunions to compensate for the +/- offset that the new wheel/spacer combo will create. And the first guy was right, you need Nomex liners for the lug studs because of the extra force of the larger wheels. As far as gearing, the 5.38s would be OK, but you can't get anything like that in your front axle. Go with 5.38s in the rear and 4.88s in the front. Just adjust your airpressure accordingly if you decide to put it in 4wd. If the shop aruges, just do it yourself. It isn't that hard to set up gears with a 1.125" socket and a flat bladed screwdriver (you might need a piece of schedule 40 pipe too)
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Old 06-02-2005, 09:12 PM   #11 (permalink)
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Old 06-02-2005, 11:16 PM   #12 (permalink)
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Holy crap... you guys are actually taking it pretty easy. I thought this guy was gonna get completely crucified.


MJc30tjduds or whatever... go here------> Just for you!
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Old 06-03-2005, 04:43 AM   #13 (permalink)
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Quote:
Originally Posted by OldGreen
Don't let these guys give you a hard time. . .they are assholes.

Just go and get some 7" backspaced wheels and 1.5" wheel spacers. Don't forget to get the reduced trunions to compensate for the +/- offset that the new wheel/spacer combo will create. And the first guy was right, you need Nomex liners for the lug studs because of the extra force of the larger wheels. As far as gearing, the 5.38s would be OK, but you can't get anything like that in your front axle. Go with 5.38s in the rear and 4.88s in the front. Just adjust your airpressure accordingly if you decide to put it in 4wd. If the shop aruges, just do it yourself. It isn't that hard to set up gears with a 1.125" socket and a flat bladed screwdriver (you might need a piece of schedule 40 pipe too)
sure...give him all of the answers.

only other option is to stack washers behind the wheels. Just make sure you use red locktite on the lug nuts
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Old 06-03-2005, 10:15 AM   #14 (permalink)
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Sorry, I was in a giving mood.
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Old 06-03-2005, 11:06 AM   #15 (permalink)
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there is a place called newbie questions... i think its thataway>>>>>>>>>>>>>>> r

and lets think about this...

how about you walk outside, look at where you body is in relation to the bumper and imagine it being three inches higher...

may i subtly remind you that
this is a forum for more "extreme" modifications, i know that sounds corny but its the best way to put it thanks and have a nice day
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Last edited by currupt4130; 06-03-2005 at 11:08 AM.
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Old 06-03-2005, 11:19 AM   #16 (permalink)
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Quote:
Originally Posted by mcg30stjude
I have a 2000 Jeep Wrangler Sahara all stock for the time being. I want to add a 3 inch body lift, 33X12.5R15 BFGoodrich Mud Terrain tires, and 15x10
Pro Comp 1079 series rims. So, what backspacing would i need on my 15x10 rims in order for the tires to stick out from the wheel fenders? Note: the Sahara fenders are wider than the Wrangler Sport fenders. Also, with a 3" body lift, will there be a large gap between the body and bumper?
Heres the straight up no bullshit answers.

Screw the 3" body lift. Thats just plain stupid. Look at what happened to his guys 2" in an accident. Put on a real suspension lift and at most a 1" BL.

If you want to air those tires way down to rock crawl go with 15x8 rim to hold the bead better. Or get some beadlocks with the 15x10 rim. However seems your just after looks so ignore the above.

Backspacing wise 3 3/4" is what you need. You go higher than 4 and you will rub on a full turn with 12.5 tires. You go too much lower and you will wear your wheel bearings out prematurly from having weight that far out.

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