What Backspacing for 15x7 Procomp Rockcrawler Rims???

2mopar_diesels · **Posted:** Sat Feb 20, 2010 3:30 pm

Looks like another deal I had worked on For getting an LJ Unlimited Rubicon fell through. So I've decided to just upgrade the rims/tires to 31" Duratracs on 15x7 black rockcrawler steelies and keep it a while longer. So, with the setup listed in my sig, what's a better choice for rim backspacing? I can get them in either 4.5" or 3.75" Pics from those running these kind of rims with both bs would be great.

RED_KJ_666 · **Posted:** Sat Feb 20, 2010 3:32 pm

4" is Ideal from what I've been told. Also what I have ordered Cragar soft 8's. The soft 8's are also cheaper.

2mopar_diesels · **Posted:** Sat Feb 20, 2010 3:44 pm

RED_KJ_666 wrote:

4" is Ideal from what I've been told. Also what I have ordered Cragar soft 8's. The soft 8's are also cheaper.

Well, 4Wheel Parts doesn't offer these in exactly 4"bs, so would 1/4in. matter that much if i go with the 3 3/4 or should I get them with 4.5"bs you think?

RED_KJ_666 · **Posted:** Sat Feb 20, 2010 3:59 pm

I think 4.5" of backspacing will cause them too rub pretty badly at full lock. 4wheelparts may not show them online but they should be able to order them in for you..... If ProComp still makes them in 15x7 4"BS. I'm pretty sure that they no longer are manufacturing anything in 15x7. Check out there website.

http://www.procomptires.com/truck-jeep- ... wlers.aspx

Prospect62 · **Posted:** Sat Feb 20, 2010 6:35 pm

I'd stick with at least 4", if not 4.5".

3.75" sticks out too far IMHO, and looks really dumb. I think most guys go with 4", that's what I have.

cmohr · **Posted:** Sun Feb 21, 2010 9:31 pm

I think you have to go with 3.75. as I believe the 4.5 still hits the steering knuckle.

I have 15x7 with 3.5 and run 31/10.5/15 Mickey Thompson MTZ's and thats Excellent.

DirtyKK · **Posted:** Sun Feb 21, 2010 9:37 pm

you could get the 4.5 and space em out to 4 if the 4 is unavailable. like its been said though ask or search around and they may be able to acquire sizes other then whats listed.

2mopar_diesels · **Posted:** Mon Feb 22, 2010 10:33 pm

Nope, I called and thats all they carry. Looks like the wheels with 3.75" bs will be the ones I order.

dieselenthusiast · **Posted:** Tue Feb 23, 2010 2:29 am

RED_KJ_666 wrote:

4" is Ideal from what I've been told. Also what I have ordered Cragar soft 8's. The soft 8's are also cheaper.

X2, that's what I have..............

2mopar_diesels · **Posted:** Thu Feb 25, 2010 4:36 pm

Well, I ordered the rims w/3.75"bs and Wrangler Duratrac tires yesterday!!! I will also have them put a Detroit TruTrac in the front diff. Have next Wendsday set for the install. Definitely will have a full review along with some before and after pics for you guys to ogle over when it's complete!!!

Rims

Tires

dieselenthusiast · **Posted:** Thu Feb 25, 2010 11:32 pm

Post plenty of pics!

tommudd · **Posted:** Fri Feb 26, 2010 12:23 am

You'll like the Duratracs, great tires

2mopar_diesels · **Posted:** Fri Feb 26, 2010 2:53 am

tommudd wrote:

You'll like the Duratracs, great tires

Thats what I'm hoping for. Only thing I didn't like about them is they seem to not have as deep a tread depth as other M/T's......18/32 vs. 20-21/32 on other tires in it's category. Oh well. Gotta cut corners/costs somehow in order to sell a tire like this so cheap compared to it's competition.

What Backspacing for 15x7 Procomp Rockcrawler Rims???

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