15x8 or 15x7 Rims

06 KJ Sport · **Posted:** Fri Feb 08, 2008 9:11 pm

I am going to put some new steel rims on my Libby, but I cannot deciede wether or not to go with 15x7 or 15x8's.
Can some of you guys post pics of your jeeps with either of the two, preferably looking head on so that I may see how much the tires stick out.

Thanks a Ton

KJKev · **Posted:** Fri Feb 08, 2008 9:19 pm

Remember, it's not only how wide the wheel is, you need to have the correct backspacing.

KJKev

06 KJ Sport · **Posted:** Fri Feb 08, 2008 9:22 pm

Than I need pics of all the different backspacing's as well :roll:

The rim is wider though between the 7 & 8 :?:

tommudd · **Posted:** Fri Feb 08, 2008 9:25 pm

also may be important as to what size tire you are planning on running, some sizes require a wider (say 8 inch ) rim that a narrow tire. Just a little bit more info as to what you are planning, for instance a 30X9.50X15 would do good on a 7 inch, but a 31X10.50 X15 would do better on an 8 inch ,

1300ZUK · **Posted:** Fri Feb 08, 2008 9:44 pm

Make sure the 15's fit over your brakes first

and 7" rims.

KJKev · **Posted:** Fri Feb 08, 2008 11:50 pm

Thats one reason I stayed with the 16's.
With 15's you get a few more tire sizes and they can be a bit cheaper, but I wanted to stay with the bigger. Bigger is better...right?

Plus, getting pix of all wheels with different backspacing would be impossible. Not all wheels will fit the Liberty.

I can get you the part number of the wheels I bought.

From the Summit Racing website.

Cragar Soft 8 Wheels
Wheel, Soft 8, Steel, Black, 16 in. x 7 in., 5 x 4.5 in. Bolt Circle, 4 in. Backspace, Each

These wheels make the tires stick out just a bit from the fender flares.
KJKev

dieselenthusiast · **Posted:** Sat Feb 09, 2008 1:22 am

Is the factory rim 7" wide?

tommudd · **Posted:** Sat Feb 09, 2008 2:04 am

Yes factory is 7

CCKJ03 · **Posted:** Sat Feb 09, 2008 11:59 am

Question...Backspacing and offset is one in the same...correct?

I here people use those words interchangeabley however, when people talk of offset they usally refer to + or - (i.e. +12 or -12). When talking backspace people usally just say 3.5 inches or 4 inches.

Do I have this right?

tjkj2002 · **Posted:** Sat Feb 09, 2008 12:05 pm

CCKJ03 wrote:

Question...Backspacing and offset is one in the same...correct?

I here people use those words interchangeabley however, when people talk of offset they usally refer to + or - (i.e. +12 or -12). When talking backspace people usally just say 3.5 inches or 4 inches.

Do I have this right?

Yes and no,sort-of and not really------this will explain it better-----
https://rsracing.com/tech-wheel.html

CCKJ03 · **Posted:** Sat Feb 09, 2008 12:15 pm

Another question...So what is a avg backspacing for KJs?

dieselenthusiast · **Posted:** Sat Feb 09, 2008 12:22 pm

tjkj2002 wrote:

CCKJ03 wrote:

Question...Backspacing and offset is one in the same...correct?

I here people use those words interchangeabley however, when people talk of offset they usally refer to + or - (i.e. +12 or -12). When talking backspace people usally just say 3.5 inches or 4 inches.

Do I have this right?

Yes and no,sort-of and not really------this will explain it better-----
https://rsracing.com/tech-wheel.html

Troy, this is what I got when I tried to open the website, “There is a problem with this website's security certificate. The security certificate presented by this website was issued for a different website's address. Security certificate problems may indicate an attempt to fool you or intercept any data you send to the server.” :shock:

So is this safe to open? I don't want to open a can of worms!

tjkj2002 · **Posted:** Sat Feb 09, 2008 1:16 pm

dieselenthusiast wrote:

tjkj2002 wrote:

CCKJ03 wrote:

Question...Backspacing and offset is one in the same...correct?

I here people use those words interchangeabley however, when people talk of offset they usally refer to + or - (i.e. +12 or -12). When talking backspace people usally just say 3.5 inches or 4 inches.

Do I have this right?

Yes and no,sort-of and not really------this will explain it better-----
https://rsracing.com/tech-wheel.html

Troy, this is what I got when I tried to open the website, “There is a problem with this website's security certificate. The security certificate presented by this website was issued for a different website's address. Security certificate problems may indicate an attempt to fool you or intercept any data you send to the server.” :shock:

So is this safe to open? I don't want to open a can of worms!

Try this link and go to wheel tech.The link I posted is for a seperate web page for R&S racing.

https://rsracing.com/menu-tech.html

No message comes up for the above link.

tjkj2002 · **Posted:** Sat Feb 09, 2008 1:17 pm

CCKJ03 wrote:

Another question...So what is a avg backspacing for KJs?

OEM BS is 5.5".

CCKJ03 · **Posted:** Sat Feb 09, 2008 4:27 pm

So, the less the backspacing...the more the tire will extend past the fender flare or well (?).

tjkj2002 · **Posted:** Sat Feb 09, 2008 4:31 pm

CCKJ03 wrote:

So, the less the backspacing...the more the tire will extend past the fender flare or well (?).

yep

CCKJ03 · **Posted:** Sat Feb 09, 2008 5:32 pm

Thanks for helping me figure that out...

cmohr · **Posted:** Sun Feb 10, 2008 9:21 pm

G'day Matey,

Have a look here http://www.lostjeeps.com/forum/phpBB3/vie ... hp?t=25985 and follow the link to some pics. Also, there is another lad over here in Oz that has just put on the same rims and is running 30/9.5/15's. Heres a link to that http://www.ausjeepoffroad.com/forum/sho ... hp?t=74875.

cmohr

06 KJ Sport · **Posted:** Mon Feb 11, 2008 1:05 am

Thanks for all of the help. Now I just have to choose what rims to get and tires to match!

racnee · **Posted:** Tue Feb 12, 2008 6:41 pm

15" rims would be better right? more rubber. and less weight. ?

15x8 or 15x7 Rims

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