Calgary Jeep Association

4x4 Related Groups => Tech Talk => Topic started by: duncan-d on October 03, 2011, 05:42:55 PM

Title: New Wheel (Rim) Help Needed (Backspacing).
Post by: duncan-d on October 03, 2011, 05:42:55 PM
I have just purchased the Toyo Open Country MT LT265/75R16 tires. I am now in the market for new steel rims. I have it down to Cragar Soft 8 16X8 with 5 inch backspacing or the Pro Comp Series 98 16X8 with 4.25 backspacing. If I went with the Cragar rims would the backspacing be OK with the wider than stock tires LT245/75R16 (any rubbing)? Also would the tires stick out too much with the Pro Comp rims? Not sure which way to go?
Title: Re: New Wheel (Rim) Help Needed (Backspacing).
Post by: hps4evr on October 03, 2011, 06:40:05 PM
what kind of jeep is it?
Title: Re: New Wheel (Rim) Help Needed (Backspacing).
Post by: duncan-d on October 03, 2011, 06:46:07 PM
It is a 2006 Jeep Rubicon.
Title: Re: New Wheel (Rim) Help Needed (Backspacing).
Post by: hps4evr on October 03, 2011, 09:05:01 PM
if you have no lift then id go with the pro comps 4.25"  backspace. they may be fine on your stock rims. any other mods?
Title: Re: New Wheel (Rim) Help Needed (Backspacing).
Post by: duncan-d on October 03, 2011, 09:47:06 PM
2 inch BB
Title: Re: New Wheel (Rim) Help Needed (Backspacing).
Post by: Raspberry on October 03, 2011, 10:15:10 PM
Personally I'd go with the rims that had less backspacing. They shouldn't stick out the tires too far, but they should prevent the tires rubbing on your suspension components should you decide to go with bigger in future. I don't own a TJ but since they make use of the same front end (more or less) as XJs and ZJs I don't think you'd end up rubbing with 265/75's with either choice of rim, but I'd still go with less backspacing to be safe.
Title: Re: New Wheel (Rim) Help Needed (Backspacing).
Post by: JackstandJohnny on October 04, 2011, 12:24:20 AM
i've got that combo (265x75on16s) with 4.25" backspacing. come over and we can mount up my spare, then you can go from there if you'd like.

bring beer. i don't wrench for free ;)
Title: Re: New Wheel (Rim) Help Needed (Backspacing).
Post by: duncan-d on October 04, 2011, 10:50:06 AM
I am really concerned about the 5 inch back spacing and not the 4.25. I would like to keep the tires within the fender flares if possible. With the wider tire and the 4.25 back spacing they will stick outside and I know there would be no rubbing. That means new fender flares. Anybody have the LT265/75R16 with a wheel that has 5 inch back spacing on a TJ?
Title: Re: New Wheel (Rim) Help Needed (Backspacing).
Post by: jeepjones on October 04, 2011, 12:14:46 PM
Who cares if they stick out a little? The wider your stance the more stable it will be on uneven terrain, rule of thumb: the higher you go- the wider you go.
Title: Re: New Wheel (Rim) Help Needed (Backspacing).
Post by: Raspberry on October 04, 2011, 02:50:04 PM
Who cares if they stick out a little? The wider your stance the more stable it will be on uneven terrain, rule of thumb: the higher you go- the wider you go.


Agreed. Its geometry 101!
 Takes up Johnny's offer and see what his spare looks like mounted to your jeep, then add three quarters of an inch in your head.
Title: Re: New Wheel (Rim) Help Needed (Backspacing).
Post by: Spinalguy on October 04, 2011, 03:11:58 PM
31.6 x11.2, i am pretty sure you could use a 3.75inch bs with them not sticking out :P
Title: Re: New Wheel (Rim) Help Needed (Backspacing).
Post by: duncan-d on October 05, 2011, 09:12:28 AM
3.75 back spacing without sticking out? How is that possible. One inch wider tire, so 1/2 inch on each side plus a change of back spacing from 5 inch to 3.75 which is 1 1/4 inch so total of  1 3/4 inch outwards. My tire are just inside the fender flares now.
Title: Re: New Wheel (Rim) Help Needed (Backspacing).
Post by: Spinalguy on October 06, 2011, 12:56:33 PM
3.75 back spacing without sticking out? How is that possible. One inch wider tire, so 1/2 inch on each side plus a change of back spacing from 5 inch to 3.75 which is 1 1/4 inch so total of  1 3/4 inch outwards. My tire are just inside the fender flares now.
i run a 32x11.50 tire on a CJ. Flares are less than a TJ. They fit great. i have 4.25bs.
i guess what i am saying is go take up on JackstandJohnny's offer. You will get a great grasp on the rims that will work