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post #1 of (permalink) Old 01-01-2004, 06:18 PM Thread Starter
 
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Backspacing?

Hey all! Looking to run 31's on the Kick soon, after another inch or so of lift.

I'm wondering about what backspacing i'll need on the wheels..... I have a line on some cheap 15x8's with 3.5" BS. Will this be enough?

[img]images/graemlins/40BEER.gif[/img]
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post #2 of (permalink) Old 01-01-2004, 07:08 PM
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Re: Backspacing?

I dont really know the answer in this case, but something to keep in mind. Less backspacing keeps the tires off the frame or leaf springs (in a sammi) but actually make it worse in the wheel well area down by the rockers. It's a delicate balance.

This is kinda hard to understand. I did a drawing in CAD to prove it to someone a while back.

This is viewing it from the top.

Blue: tire
Yellow: wheel mounting surface
White: represents the wheel well

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post #3 of (permalink) Old 01-01-2004, 07:38 PM Thread Starter
 
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Re: Backspacing?

I'm aware of the inner fender trimming that will be required. Only 10 mins with a grinder.

The problem I have right now is with rubbing on the frame. Its very slight, but with the larger and wider tires....
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post #4 of (permalink) Old 01-01-2004, 11:08 PM
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Re: Backspacing?

Backspacing issues can be fun , I wish I'd never went to the 2" backs on these 8" rims on the Sami . With the 12.5" wide Swampers the arc that the wheel turns makes it pretty hard on the arms , and it's very hard to keep the axle placed correctly to miss the front bumper and the tub . Instead of a wheel turning on an axis it swings in a large arc making clearance issues even worse . Centered rims on a wider axle would work out better ....
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post #5 of (permalink) Old 01-02-2004, 06:25 AM
 
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Re: Backspacing?

I am not sure how much lift you are running but I ran 31x10.5 on 15x8's with 3.75" backspacing and still had to trim back the insides of the front fenders.. I ran a 3" Calmimi body lift and the old 2.5" Procomp suspension lift.
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post #6 of (permalink) Old 01-02-2004, 10:53 PM Thread Starter
 
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Re: Backspacing?

I'll be running 2.25" of suspension lift.... and I don't go rockcrawling, so flex isn't an issue, so neither will be much rubbing at the top.

I know that i'll have to trim the inside of the fender near the footwell.... I know someone who ran 31's stock, and that was the only trimming that he had to do....
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post #7 of (permalink) Old 01-03-2004, 06:38 AM
 
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Re: Backspacing?

I have a brand new set of 2" back spaced 8" rims that are powder coated that I will take $100 plus shipping for.

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post #8 of (permalink) Old 01-03-2004, 07:18 AM
 
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Re: Backspacing?

mark, sent you a pm. i am really interested in your rims!
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