Backspacing

Getting ready to pull the trigger on wheels and tires. Decided to go with the Rock Crawlers 15x10, with 33/12.5 Mud T/A. Not quite sure about the backspacing though. It has 31/10.5 now and everything clears with no problems. It has a few inches of lift, not sure exactly (New topic: How much lift do I have) as it was already lifted when I got it.
Any thoughts?
Thanks

 

The backspacing should be the same on most all aftermarket wheels. Something like 3-5/8".

If you've got a wider wheel the difference should all be to the outside.

 

I think the 15x10 AR767's are 3.75". I only slightly rub the springs at full lock...keep in mind this is with a D30 so my turning radius is sharper. The rears slightly rub the inner wheelhousing at full stuff. My tires are 33/12.50-15

 

That's kinda what worries me, that I might hit the front bumper at full lock, but like you said the D27 doesn't turn too sharp.

 

Joe - Do you have a lift? How much?

 

Used lift, roughly 2.5-3".

 

Pat: I have 15x10's chrome mods with 33x12.50 BFG MT's, a 2.5" lift with 1.5" shackles. I only hit the front springs at Full Lock. It's only slight and I see no reason to "crank out" the limit stops. It's VERY SLIGHT. I can stop it by just backing off full lock about 1/16 of a turn.

I'm happy with it!

 

Thanks Jim. I was hoping you'd chime in. Your setup is about what I'm shooting for. I just gotta figure out how much lift I got on there. What exactly does a 1.5" shackle measure to? Is that 1.5" longer than stock?

 

Thanks Mike. So the number that you see is that much more longer than the stock shackle? How long's the stock shackle? I assume that's measured hole to hole?

 

Pat: Yes, mine are 1.5" longer than stock--that net's me .75" lift. I'm really no fan of extended shackles, so someday I may go to a 0.5" shackle which would give me a 1/4" lift.

We'll see. But I'm not concerned with the interference now. NBFD! R)

P.S. If you want, I'll take a pic of my "Interference". Like I said, no big deal!

 

That would be great Jim. I'd really appreciate the pic.

 

Pat: I'll take them tomorrow morning.

Well I lied: Here they are now. Note the Small amt of damage to the tire. This is with a ProComp 2.5" lift with 1.5" shackles.

1st pic= amt of "burnishing" on the spring wrap.

2nd pic= 1.5" shackles, you can also see the "polish" on the spring wrap.

3rd pic= "Damage" to the tire on the "Large" lug. No big deal.

 

Spidertrax offers rims with a better backspace.. 2.5".. got em on the CJ with 34 X 10.50's with plenty o room to spare.. got pics on my website...


BUBBA

 

Thanks a bunch for the pics Jim. You too Scott.

 

Ordered the wheels and tires yesterday, gonna have put on tomorrow morning. I'll have pics if I can find the digital.