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Topic Review (Newest First)
03-22-2013 10:38 PM
Steelman
Quote:
Originally Posted by TJDave View Post
I used to run the exact same Toyo's. 33x12.5x15. They are a very heavy tire. I had them on cheapo black steelies. 15x8 with 3.75 backspacing. When I went to 35's, I put them on alloy wheels. Lighter, and stay balanced better. I would suggest going alloy wheels.
Agree 100000%! I was amazed how much heavier a steel wheel was compared to the alloy ones I now have!
03-22-2013 10:12 PM
Patrick H
Quote:
Originally Posted by Full Spool View Post
I'm just saying the spacers weren't a factory option.
Oh, OK. Go watch your movie..
03-22-2013 09:37 PM
Full Spool
Quote:
Originally Posted by Patrick H View Post
The Canyons?
12.50's on 5.5 BS with 1.25 spacers would clear just fine I'd think. That's only 1/2" more back space than your 3.75 BS
I'm just saying the spacers weren't a factory option.
03-22-2013 09:36 PM
Full Spool My last point then it's back to watching this stupid zombie movie.

Keeping the offset closer to 0 is going to keep the ball joints closer to wheel center which will reduce steering component fatigue. 10" wheels on 12 inch tires makes the wheels more prone to damage from rocks.
03-22-2013 09:25 PM
Patrick H
Quote:
Originally Posted by Full Spool View Post
But what size tires originally came on those rims. You move up to 33' or 35' on those wheels and you would have to set the steering stops to where you need a parking lot to turn a circle.
The Canyons?
12.50's on 5.5 BS with 1.25 spacers would clear just fine I'd think. That's only 1/2" more back space than your 3.75 BS
03-22-2013 09:22 PM
Full Spool
Quote:
Originally Posted by Patrick H View Post
Why would someone buy new wheels that didn't have the back space they wanted?
I ran 1.25" spacers on my stock Canyons @5.5" back space, so the 4" back space wheels gave me 1/4" less back space than that setup.
But what size tires originally came on those rims. You move up to 33' or 35' on those wheels and you would have to set the steering stops to where you need a parking lot to turn a circle.
03-22-2013 09:17 PM
Patrick H
Quote:
Originally Posted by Full Spool View Post
Unless you buy a 12" wide rim with 3.75 backspacing. Then a heavy duty steering damper would be on the menu.
As far as the wheels themselves go.............................................
03-22-2013 09:10 PM
Full Spool
Quote:
Originally Posted by Patrick H View Post
Exactly, which is why for our application, offset isn't generally a concern. Pick your wheel width, and pick your back space.
Unless you buy a 12" wide rim with 3.75 backspacing. Then a heavy duty steering damper would be on the menu.
03-22-2013 09:07 PM
Full Spool
Quote:
Originally Posted by Patrick H View Post
Why would someone buy new wheels that didn't have the back space they wanted?
They didn't investigate before they bought? Or maybe they upgraded to curry steering and it didn't have the clearance.

Anyway, it's good discussion.
03-22-2013 09:07 PM
Rude Dog Ok so $62.00 wheel delivered, not bad... Even better if no sales tax. I've seen some black wheels @ $55.00/Wheel, but then there's tax, shipping, or both. There's basic black steel wheels used/sold in the racing industry that are reasonable in price in many off-sets. Not sure exactly which offsets "they" offer? Likely offsets in increments of 1/2 "& 1".
03-22-2013 09:06 PM
mdutton What about 8" vs 10" wide rim for 33 x 12.50 x 15 tires
03-22-2013 08:58 PM
Patrick H
Quote:
Offset is gonna change between a 8" rim and a 10" rim, if the back spacing is to stay at 3.75"
Exactly, which is why for our application, offset isn't generally a concern. Pick your wheel width, and pick your back space.
03-22-2013 08:55 PM
Melvin
Quote:
Originally Posted by Patrick H View Post
That's fine. That should be the offset for an 8" wide wheel with 3.75" back space.

Cool. I will be ordering up the set I was looking at. Thanks.
03-22-2013 08:55 PM
Full Spool
Quote:
Originally Posted by Melvin View Post
And also the -19 offset? Is this what I should run? Or is there a better offset?
Offset is gonna change between a 8" rim and a 10" rim, if the back spacing is to stay at 3.75"

-19mm = -.75 inches

so it's saying the mounting surface is .75 off center on an 8" wheel, which equates to about 3.75' of back spacing if you calculate in the thickness of the wheel.
03-22-2013 08:50 PM
Patrick H
Quote:
Originally Posted by Melvin View Post
And also the -19 offset? Is this what I should run? Or is there a better offset?
That's fine. That should be the offset for an 8" wide wheel with 3.75" back space.
03-22-2013 08:49 PM
Patrick H
Quote:
Originally Posted by Full Spool View Post
It's kinda funny when people buy rims with 4.5" backspace, then buy wheel spacers.
Why would someone buy new wheels that didn't have the back space they wanted?
I ran 1.25" spacers on my stock Canyons @5.5" back space, so the 4" back space wheels gave me 1/4" less back space than that setup.
03-22-2013 08:48 PM
Melvin And also the -19 offset? Is this what I should run? Or is there a better offset?
03-22-2013 08:46 PM
Melvin So then will the 3.75 back spacing work with the Toyo Open country mts that I mentioned?
03-22-2013 08:34 PM
TJDave I used to run the exact same Toyo's. 33x12.5x15. They are a very heavy tire. I had them on cheapo black steelies. 15x8 with 3.75 backspacing. When I went to 35's, I put them on alloy wheels. Lighter, and stay balanced better. I would suggest going alloy wheels.



03-22-2013 08:27 PM
Full Spool
Quote:
Originally Posted by Patrick H View Post
I went with 4" back space. Plenty of clearance for 12.50's
It's kinda funny when people buy rims with 4.5" backspace, then buy wheel spacers.
03-22-2013 08:22 PM
Patrick H
Quote:
Originally Posted by Full Spool View Post
The wheel offset is the difference between the mounting surface at the brake side of the rim compared inside to outside. -19 means the wheel is has more out, than on the inside.

Bump steer comes into play when the mounting surface strays from center of the rim.




Back space is needed to clear the tie rod ends and other components.
Jeep wheel usually sell with two different back spacings, 3.75 and 4.5

To get tie rod clearance the 3.75 with an 8" rim is the best bet.
I went with 4" back space. Plenty of clearance for 12.50's
03-22-2013 08:21 PM
Patrick H
03-22-2013 08:16 PM
Full Spool
Quote:
Originally Posted by mdutton View Post
So what is the difference between offset and back space in regards to rims?
The wheel offset is the difference between the mounting surface at the brake side of the rim compared inside to outside. -19 means the wheel is has more out, than on the inside.

Bump steer comes into play when the mounting surface strays from center of the rim.




Back space is needed to clear the tie rod ends and other components.
Jeep wheel usually sell with two different back spacings, 3.75 and 4.5

To get tie rod clearance the 3.75 with an 8" rim is the best bet.
03-22-2013 08:06 PM
mdutton So what is the difference between offset and back space in regards to rims?
03-22-2013 08:04 PM
Full Spool
Quote:
Originally Posted by Patrick H View Post
Simply converting the measurement of offset won't directly give you the backspace. Offset and back space are two different things.
Gosh damnit, you gonna make me calculate that foreign language...
That's why I sent him to an american institute like quadratec.
03-22-2013 07:55 PM
Patrick H
Quote:
Originally Posted by Full Spool View Post
I guess you could convert from metric. or google procomp series 98..
Simply converting the measurement of offset won't directly give you the backspace. Offset and back space are two different things.
03-22-2013 07:53 PM
Full Spool
Quote:
Originally Posted by Melvin View Post
Its 250 for a set of 4 wheels. How do I know what back spacing the wheel has? These just say offset is neg 19
I guess you could convert from metric. or google procomp series 98..
03-22-2013 07:47 PM
Melvin
Quote:
Originally Posted by Full Spool View Post
One wheel for $250? The wording on that posting is deceptive.

I'd get the procomp series 97 or 98, with 3.75 backspacing from quadratec, or see if your local shop has them. They are a dime a dozen and it's the same shit, different chinese distributor.
Its 250 for a set of 4 wheels. How do I know what back spacing the wheel has? These just say offset is neg 19
03-22-2013 07:30 PM
Full Spool
Quote:
Originally Posted by Melvin View Post
I'd get the procomp series 97 or 98, with 3.75 backspacing from quadratec, or see if your local shop has them. They are a dime a dozen and it's the same shit, different chinese distributor.
03-22-2013 07:15 PM
tjwood29 I am running 33x10.5xr15 on my tj and I have more than enough room. I was told on the thread I posted that 4 backspacing is good for running 10.5 and 12.5.
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