How Much Backspace????

terryd · Jan 25, 2007

98 XJ. 2" of lift right now. wanna run 31/10.50 on 15" rim. upgrade to 32/10-12.50's later. what rim width and backspacing would you purchase for this application?? pics of each if you got 'em handy!!!

Bent · Jan 25, 2007

There is plenty of info here if you do a quick search. I ran 31 x 10.5 on my stock rims (5.5 bs) with no trouble. There was a little rubbing on the LCA at full lock but nothing that caused any trouble.

nnvaxj · Jan 25, 2007

4.5 backspace works well for me, with 31-10.5 on budget boost. i used ford exploder wheels, same bolt pattern, 4.5 backspace. tires are about even with the outside edge of flare. no rubbing on control arm.

cal · Jan 25, 2007

I ran 32x11.5 on stock 15x7 wheels for a year. they were close to they were close to the leaf springs and rubbed the lca's at full lock, but it was never a problem.

Later I changed them out to 15x8 wheels with 4.5" backspacing and it was WONDERFULL. Now I run 35x12.5's (well, 315/75/16) on 16x8 wheels with 4.5" backspacing and still have no problems.

djblade311 · Jan 25, 2007

x2 on 4.5

xjjeepthing · Jan 26, 2007

I run Crager 15x8 wheels with 4.75" BS and 31/10.50R15 MTR's No issues at all.

docchaynes · Mar 8, 2007

%&#* , I'm confused now. If the stock rims are backspaced 5 1/2 " wouldn't that put them further from the LCA or rear leaf than less backspace?

And the stock 5 spoke steelies: 7" or 8"?

90Blue_XJ · Dec 15, 2007

docchaynes said:
%&#* , I'm confused now. If the stock rims are backspaced 5 1/2 " wouldn't that put them further from the LCA or rear leaf than less backspace?

And the stock 5 spoke steelies: 7" or 8"?

No, the backspacing is the amount of wheel width that extend into the wheelwell. The more backspacing you have the less clearance you will have with the rear leaf spring perches and the LCAs in front when the wheel is turned to the side.

Most stock wheels are 7" IIRC.

Russ Pottenger · Dec 15, 2007

Mikeforte,

You answered a post 9 months old.

canadian_xj · Dec 15, 2007

pottenger said:
Mikeforte,

You answered a post 9 months old.

That's awesome.......!

How Much Backspace????

terryd

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Bent

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nnvaxj

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cal

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djblade311

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xjjeepthing

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docchaynes

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90Blue_XJ

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Russ Pottenger

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canadian_xj

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