need some help with info
Thread Starter
Senior Member




SL Member
Scion Evolution
Joined: Jun 2004
Posts: 2,726
From: Over there
ok I am not going to give out too much info as of yet, but I may be working with a company on getting some wheels to fit on the 1st Gen, xB. I will say they are kinda a copy of a "JDM" wheel that not too many people have. that and I am still in the "talking faze" of things right now.
they use backspacing, not offsets, so I have no idea what would fit on our cars. can someone help me out with this?
here is what they already make the wheel in.
of what they already make, which ones would work?
Backspace
Size Min Max
15x4 1.625 Only
15x6 3.50 Only
15x7 3.50 4.50
15x8 3.50 5.375
15x10 3.50 7.50
15x12 3.50 7.75
15x14 3.50 7.75
16x7 3.25 4.125
16x8 3.25 4.75
16x9.5 3.25 6.75
17x7 3.25 4.125
17x8 3.25 5.125
17x9.5 3.25 6.625
17x11 3.25 7.75
18x7 3.25 4.00
18x8 3.25 5.125
18x9.5 3.25 6.75
20x8 3.25 5.50
.
20x9.5 3.25 7.125
they use backspacing, not offsets, so I have no idea what would fit on our cars. can someone help me out with this?
here is what they already make the wheel in.
of what they already make, which ones would work?
Backspace
Size Min Max
15x4 1.625 Only
15x6 3.50 Only
15x7 3.50 4.50
15x8 3.50 5.375
15x10 3.50 7.50
15x12 3.50 7.75
15x14 3.50 7.75
16x7 3.25 4.125
16x8 3.25 4.75
16x9.5 3.25 6.75
17x7 3.25 4.125
17x8 3.25 5.125
17x9.5 3.25 6.625
17x11 3.25 7.75
18x7 3.25 4.00
18x8 3.25 5.125
18x9.5 3.25 6.75
20x8 3.25 5.50
.
20x9.5 3.25 7.125
Here's a backspace to offset chart.

Also, how to calculate:
* First, measure the wheel’s backspace
* Measure the wheel’s overall width from outside rim edge to outside rim edge
* Divide the wheel width figure by 2
* Subtract the resulting figure from the Backspace measurement
Example: If the backspace is 3.5 inches and the total wheel width is 8 inches, then:
* 8 ÷ 2 = 4 inches
* 4 – 3.5 = - 0.5 inches – the Wheel Offset (a negative offset)
Then you just have to convert inches to mm.
To convert from inches to mm multiply by 25.4
That should get you pretty close.

Also, how to calculate:
* First, measure the wheel’s backspace
* Measure the wheel’s overall width from outside rim edge to outside rim edge
* Divide the wheel width figure by 2
* Subtract the resulting figure from the Backspace measurement
Example: If the backspace is 3.5 inches and the total wheel width is 8 inches, then:
* 8 ÷ 2 = 4 inches
* 4 – 3.5 = - 0.5 inches – the Wheel Offset (a negative offset)
Then you just have to convert inches to mm.
To convert from inches to mm multiply by 25.4
That should get you pretty close.
Thread Starter
Senior Member




SL Member
Scion Evolution
Joined: Jun 2004
Posts: 2,726
From: Over there
Originally Posted by Metro273
Hmmm, another new wheel for the Gothbox?... 
Btw, it was great to meet you in person at Elmhurst!
Btw, it was great to meet you in person at Elmhurst!
hell yeah it was great meeting you too.
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