Each wheel is precision machined with multi-axis technology and hand-finished to an unrivaled polished or powder-coated finish. 17,18, 20, 22, 24 & 26 available with extra caliper clearance up to 1-3/4".
| | 7/8" Caliper Clearance | | 1-1/4" Caliper Clearance | | 1-1/2" Caliper Clearance | | 1-3/4" Caliper Clearance |
| | Backspace | | Backspace | | Backspace | | Backspace |
| Size | Min Backspace | Max Backspace | | Min Backspace | Max Backspace | | Min Backspace | Max Backspace | | Min Backspace | Max Backspace |
| 17X7 | 4.00 | 5.50 | | N/A | N/A | | N/A | N/A | | N/A | N/A |
| 17X8 | 4.00 | 6.50 | | N/A | N/A | | N/A | N/A | | N/A | N/A |
| 17X10 | 4.00 | 8.50 | | N/A | N/A | | N/A | N/A | | N/A | N/A |
| 18x7 | 3.875 | 5.50 | | 3.50 | 5.125 | | 3.25 | 4.875 | | 3.375 | 4.625 |
| 18x8 | 3.875 | 6.50 | | 3.50 | 6.125 | | 3.25 | 5.875 | | 3.375 | 5.625 |
| 18x9 | 3.875 | 7.50 | | 3.50 | 7.125 | | 3.25 | 6.875 | | 3.375 | 6.625 |
| 18x10 | 3.875 | 8.50 | | 3.50 | 8.125 | | 3.25 | 7.875 | | 3.375 | 7.625 |
| 18x11 | 3.875 | 9.50 | | 3.50 | 9.125 | | 3.25 | 8.875 | | 3.375 | 7.625 |
| 18x12 | 3.875 | 10.50 | | 3.50 | 10.125 | | 3.25 | 9.875 | | 3.375 | 9.625 |
| 19x8 | 3.875 | 6.50 | | 3.50 | 6.125 | | 3.25 | 5.875 | | 3.00 | 5.625 |
| 19x9 | 3.875 | 7.50 | | 3.50 | 7.125 | | 3.25 | 6.875 | | 3.00 | 6.625 |
| 19x10 | 3.875 | 8.50 | | 3.50 | 8.125 | | 3.25 | 7.875 | | 3.00 | 7.625 |
| 19x11 | 3.875 | 9.50 | | 3.50 | 9.125 | | 3.25 | 8.875 | | 3.00 | 8.625 |
| 19x12 | 3.875 | 10.50 | | 3.50 | 10.125 | | 3.25 | 9.875 | | 3.00 | 9.625 |
| 20x8.5 | 3.875 | 7.00 | | 3.50 | 6.625 | | 3.25 | 6.375 | | 3..00 | 6.125 |
| 20x9 | 3.875 | 7.50 | | 3.50 | 7.125 | | 3.25 | 6.875 | | 3.00 | 6.625 |
| 20x10 | 3.875 | 8.50 | | 3.50 | 8.125 | | 3.25 | 7.875 | | 3.00 | 7.625 |
| 20x10.5 | 3.875 | 9.00 | | 3.50 | 8.625 | | 3.25 | 8.375 | | 3.00 | 8.125 |
| 20x12 | 3.875 | 10.50 | | 3.50 | 10.125 | | 3.25 | 9.875 | | 3.00 | 9.625 |
| 20x15 | 3.875 | 13.50 | | 3.50 | 13.125 | | 3.25 | 12.875 | | 3.00 | 12.625 |
| 22x8.5 | 4.125 | 7.25 | | 3.75 | 6.875 | | 3.50 | 6.625 | | 3.375 | 5.00 |
| 22x9 | 4.125 | 7.75 | | 3.75 | 7.375 | | 3.50 | 7.125 | | 3.375 | 5.00 |
| 22x10 | 4.125 | 8.75 | | 3.75 | 8.375 | | 3.50 | 8.125 | | 3.375 | 6.375 |
| 22x10.5 | 4.125 | 9.25 | | 3.75 | 8.875 | | 3.50 | 8.625 | | 3.375 | 6.375 |
| 22x12 | 4.125 | 10.75 | | 3.75 | 10.375 | | 3.50 | 10.125 | | 3.375 | 6.875 |
| 24X9 | N/A | N/A | | 3.875 | 7.125 | | 3.625 | 6.875 | | 3.375 | 6.625 |
| 24X10 | N/A | N/A | | 3.875 | 8.125 | | 3.625 | 7.875 | | 3.375 | 7.625 |
| 24X12 | N/A | N/A | | 3.875 | 10.125 | | 3.625 | 9.875 | | 3.375 | 9.625 |
| 24X14 | N/A | N/A | | 3.875 | 12.125 | | 3.625 | 11.875 | | 3.375 | 11.625 |
| 24X15 | N/A | N/A | | 3.875 | 13.125 | | 3.625 | 12.875 | | 3.375 | 12.625 |
| 26X9 | N/A | N/A | | 3.875 | 7.125 | | 3.625 | 6.875 | | 3.375 | 6.625 |
| 26X10 | N/A | N/A | | 3.875 | 8.125 | | 3.625 | 7.875 | | 3.375 | 7.625 |
| 26X12 | N/A | N/A | | 3.875 | 10.125 | | 3.625 | 9.875 | | 3.375 | 9.625 |
| 26X14 | N/A | N/A | | 3.875 | 12.125 | | 3.625 | 11.875 | | 3.375 | 11.625 |
| 26X16 | N/A | N/A | | 4.125 | 14.125 | | 3.875 | 13.875 | | 3.625 | 13.625 |
Not for every car, the extreme wheels only work with vehicles that have narrowed rear ends that can run minimum backspace and lots of fender space for a wide wheel.
| | 1/2" Caliper Clearance |
1" Caliper Clearance
|
| Size | Min Backspace | Max Backspace | Min Backspace | Max Backspace |
| 19X10 | 2.125 | 5.25 | 1.625 | 4.75 |
| 19X11 | 2.125 | 6.25 | 1.625 | 5.75
|
| 19X12 | 2.125 | 7.25 | 1.625 | 6.75 |
| 20x10 | 2.125 | 5.25 | 1.625 | 4.75 |
| 20x10.5 | 2.125 | 5.75 | 1.625 | 5.25
|
| 20x12 | 2.125 | 7.25 | 1.625 | 6.75 |
| 20x15 | 2.125 | 10.25 | 1.625 | 9.75 |
| 22x10 | 2.50 | 4.75 | 1.625 | 4.75 |
| 22x10.5 | 2.50 | 4.75 | 1.625 | 5.25 |
| 22x12 | 2.50 | 6.75 | 1.625 | 6.75 |