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Wheel Backspacing and Offset Info

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Old 10-27-2013, 06:43 PM   #501
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Quote:
Originally Posted by itzyoboipaul View Post
got a 2013 double cab taco

im currently running mb tko 17x8.5
-6mm offset
4.5 inch backspace
and i like how these are about half an inch out of the fenders


im thinking for xmas, i might get these

http://www.ebay.com/itm/Pro-Comp-Xtr...#ht_1716wt_904


pro comp 7089

17 x 9 inch

offset -6mm

backspace 4.75 inches

will it fit without any issues? will it look pretty much the same stance as the TKO mentioned above?
I'm running 18x9 rims with a 0mm offset. -6mm means it will stick out 6mm (roughly 1/4") from the fender more than my wheels do.
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Old 11-13-2013, 12:43 AM   #502
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Found this in some old files.... handy quick reference.

Attached Thumbnails
Wheel Backspacing and Offset Info-backspacing.jpg  
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Old 11-19-2013, 09:42 PM   #504
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I read through a great portion of this thread. Interestingly there was no specific answer supplied making it clear on the backspace that is the proper dimension when running the 285 tires. If I missed it I apologize but seemed like a lot of debate then the people asking "if this will work" post. Clearly there has to be an optimum backspace required to allow the larger tire to fit with no mods or minimal trimming.

While I agree it is so hard to tally up all the factory dimensions of the optional wheels offered by Toyota but why worry about it quite honestly being you will change them.

As I have been searching for wheels I like, it is a chore to get the information from the manufacturer about the backspacing.

With that said, does anyone have the magic numbers for a 7" to 8" wide wheel? Is it 4.5" BS that will allow the proper clearance of the UCA while not sticking out much past the fender line?
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Old 11-20-2013, 11:55 AM   #505
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You're still gonna get a multitude of answers because most lifts are gonna have different number outcomes....4.5" seems to be where a lot of guys are at though...
Quote:
Originally Posted by JAFO View Post
I read through a great portion of this thread. Interestingly there was no specific answer supplied making it clear on the backspace that is the proper dimension when running the 285 tires. If I missed it I apologize but seemed like a lot of debate then the people asking "if this will work" post. Clearly there has to be an optimum backspace required to allow the larger tire to fit with no mods or minimal trimming.

While I agree it is so hard to tally up all the factory dimensions of the optional wheels offered by Toyota but why worry about it quite honestly being you will change them.

As I have been searching for wheels I like, it is a chore to get the information from the manufacturer about the backspacing.

With that said, does anyone have the magic numbers for a 7" to 8" wide wheel? Is it 4.5" BS that will allow the proper clearance of the UCA while not sticking out much past the fender line?
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Old 11-20-2013, 11:18 PM   #507
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Quote:
Originally Posted by JAFO View Post
I read through a great portion of this thread. Interestingly there was no specific answer supplied making it clear on the backspace that is the proper dimension when running the 285 tires. If I missed it I apologize but seemed like a lot of debate then the people asking "if this will work" post. Clearly there has to be an optimum backspace required to allow the larger tire to fit with no mods or minimal trimming.

While I agree it is so hard to tally up all the factory dimensions of the optional wheels offered by Toyota but why worry about it quite honestly being you will change them.

As I have been searching for wheels I like, it is a chore to get the information from the manufacturer about the backspacing.

With that said, does anyone have the magic numbers for a 7" to 8" wide wheel? Is it 4.5" BS that will allow the proper clearance of the UCA while not sticking out much past the fender line?
At the moment, I have a 18x9 wheel with 0 offset (so should have a 5" backspacing). The tire is 305/60-18. I also have a 3" lift with LR UCAs. I have about 1/2" between the tire and UCA, and my tire sticks out no more than 1/2" from the flare.

I should be swapping to a 16x8 with 0 offset soon, and a 285/75-16 tire (very common for us around here). That should put my tire flush with the fender flare.
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Old 11-21-2013, 07:31 PM   #509
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Quote:
Originally Posted by AUF ROWD View Post
You're still gonna get a multitude of answers because most lifts are gonna have different number outcomes....4.5" seems to be where a lot of guys are at though...
I agree. The variables are endless. Final lift kit geometry, simple leveling kits, lift total height, tires are spec'd generically, wheels etc.

Its all good. Its a good thread but doubt it will answer much.
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Old 12-05-2013, 11:13 AM   #510
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The xd spy rims come in the size 18" x8.5 with a offset of +18 and a backspacing of 5.460 how much of a difference would these rims stick out from the stock TRD sport 17" rims?
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Old 12-05-2013, 05:02 PM   #511
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[QUOTE=xTACOMAx;7809836]The xd spy rims come in the size 18" x8.5 with a offset of +18 and a backspacing of 5.460 how much of a difference would these rims stick out from the stock TRD sport 17" rims?[QUOTE]
Your stockies are 7.5"
wide, with a positive offset of +30mm,,,gonna have to do some math in one the wheel spec charts on a thread on wheel specs..
Bounce around here..maybe answer some of your questions..

http://www.tacomaworld.com/forum/whe...eel-specs.html
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Old 12-27-2013, 11:16 AM   #512
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New to this site so sorry if this has already been asked.
Is anyone currently running 18x10? And if so did u have to trim or have any problems driving daily or rubbing on anything?

I want to run 18x10 on 33's with wheels that off set 24 with a 6 inch lift. I really don't want to trim it's a new taco.
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Old 12-27-2013, 11:25 AM   #513
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Quote:
Originally Posted by jefffireblaze View Post
New to this site so sorry if this has already been asked.
Is anyone currently running 18x10? And if so did u have to trim or have any problems driving daily or rubbing on anything?

I want to run 18x10 on 33's with wheels that off set 24 with a 6 inch lift. I really don't want to trim it's a new taco.
You're going to have to start cutting just for the 6" lift. You'll have to do a drop bracket kit and that requires cutting out the cross member. Unless you do a 3" suspension lift and a 3" body lift.

You mentioned 18x10 rims, and a 33" tire, but how wide of a tire? I'm currently running 18x9 -0 offset rims and 305/60 (roughly 33x12) tires with a 3" lift. I had to trim some of the inner fender flare, most of the mudflap (might as well just remove it), and chop some of the cab mount. It's not noticeable unless you're looking for it.
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Old 12-27-2013, 02:35 PM   #514
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Quote:
Originally Posted by replica9000 View Post
You're going to have to start cutting just for the 6" lift. You'll have to do a drop bracket kit and that requires cutting out the cross member. Unless you do a 3" suspension lift and a 3" body lift.

You mentioned 18x10 rims, and a 33" tire, but how wide of a tire? I'm currently running 18x9 -0 offset rims and 305/60 (roughly 33x12) tires with a 3" lift. I had to trim some of the inner fender flare, most of the mudflap (might as well just remove it), and chop some of the cab mount. It's not noticeable unless you're looking for it.
Well my main question is...The back space is recommended 4.5...is anyone running with 5.0? And if so what problems do u have?
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Old 12-29-2013, 06:14 PM   #515
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I bought some 16x9 enduros with a -12 offset, backspace of 4.53. Can I roll with my 245/75/16 for now or do i need to go bigger?
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Old 12-29-2013, 06:50 PM   #516
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Had a post a couple of days ago from a guy running 285/70-17 on 17x9 with -12 and they rub the LCA.
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Old 12-30-2013, 03:02 PM   #517
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Quote:
Originally Posted by Rich91710 View Post
Had a post a couple of days ago from a guy running 285/70-17 on 17x9 with -12 and they rub the LCA.
yeah thats why i got 16x9's im really wanting 265's . im running a 3" Old Man Emu 885's with a 1/4 poly spacer I hope i dont rub.
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Old 12-30-2013, 04:43 PM   #518
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Quote:
Originally Posted by Rich91710 View Post
Had a post a couple of days ago from a guy running 285/70-17 on 17x9 with -12 and they rub the LCA.
Rich, Im running that exact setup @ 3" with Dura Tracs(which seem rub more than other's, due to the pronounced shoulder lugs), but I cleared the LCA's no prob, had to ditch the flaps, and trim bottom inside corner plastic, with minor Cab Mount rub at full lock, installing LR UCA's this weekend so I can move the suspension to the front so I don't have to CMC...alls I need is a 1/2" to clear...
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Old 12-30-2013, 04:49 PM   #519
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Quote:
Originally Posted by jetta.the.hut View Post
I bought some 16x9 enduros with a -12 offset, backspace of 4.53. Can I roll with my 245/75/16 for now or do i need to go bigger?
If you want to go bigger I think you can run with some 265's with no prob...the -12 offset is going to pull your tire away from your suspension.
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Old 12-30-2013, 08:08 PM   #520
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would a 16x8 with 4.25" backspacing be better or worse for rubbing?
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