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Unread 01-19-2014, 11:50 AM   #1
Meir10
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Back space for 35" wheel

I have surched in the forum, and am not sure with the back space for my JK.
the lift is Rock Krawler Max Travel 2.5" , will put 315/70/17 wheels. Should I go for 4.5" / 4.75"/ 5" back space?

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Unread 01-19-2014, 12:14 PM   #2
RockyClymer
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4.5 is usually the recommendation for a 35 inch tire...5 will stick it way out and add even more stress to the suspension.
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Unread 01-19-2014, 01:34 PM   #3
Meir10
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Quote:
Originally Posted by RockyClymer View Post
4.5 is usually the recommendation for a 35 inch tire...5 will stick it way out and add even more stress to the suspension.
4.5 will stick it out more than 5...??
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Unread 01-19-2014, 01:55 PM   #4
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Quote:
Originally Posted by Meir10 View Post
4.5 will stick it out more than 5...??
Correct, 5" BS will tuck it further UNDER the flare, not extend it further out.

IMO- I like the look of them tucked in a bit more, but for clearance, they need to be spaced out a bit. It also depend on the wheel width, and tire itself. Some tires shoulder can actually be an inch or more wider than the same size tire with a different design.

Hoss
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Unread 01-19-2014, 04:06 PM   #5
awinski
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Quote:
Originally Posted by Meir10 View Post
4.5 will stick it out more than 5...??
yes less back spacing means the tire will stick farther out
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Unread 01-19-2014, 04:29 PM   #6
RockyClymer
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Opps...my math was backwards....yes, 5 will not be enough.
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Unread 01-19-2014, 10:42 PM   #7
Meir10
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5 is not enough, 4.5 or 4.75? any recommendations?
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Unread 01-20-2014, 06:29 AM   #8
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4.5 will give you the option later to upgrade your tie rod. Most aftermarket ends require a minimum of 4.5 for clearance.
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Unread 01-20-2014, 08:06 AM   #9
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I run 16x8" ProComps with 4" BS. With stock steering stops my 315/75-16's rub the front control arms and sway bar just enough to wear off the paint. I think that's pretty perfect. FWIW, I run an RK Max Travel Pro suspension.

This pic should give you a pretty good idea what it looks like.
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Unread 01-20-2014, 09:20 AM   #10
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Quote:
Originally Posted by RockyClymer View Post
Opps...my math was backwards....yes, 5 will not be enough.


5" is just enough.
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Unread 01-20-2014, 09:20 AM   #11
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Quote:
Originally Posted by Meir10 View Post
5 is not enough, 4.5 or 4.75? any recommendations?

If you have your pick, go with 4.5".
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Unread 01-20-2014, 11:15 AM   #12
Meir10
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Thank you guys, will go for the 4.5.
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