Target Wheel Position Calculator

This calculator works by solving the offset that puts a new wheel's outer edge at a chosen position relative to the current wheel. It lets you pick a stance and find the wheel to match it.

1. Enter the current wheel, for example 8.0 in ET45.
2. Enter the new wheel width, for example 9.0 in.
3. Enter the target outer move, for example +10 mm.
4. Read the required offset: 47.7 mm, so ET48.

The formula is Required Offset = Old Offset + (New Width − Old Width) × 12.7 − Target Outer Move.

Worked example: from 7.5 in ET44 to 9.0 in with a +40 mm outer move: 44 + 19.05 − 40 = 23.0 mm, so ET23.

The conversion table solves the required offset for 8 target positions. Required offsets run from ET23 to ET51.

A target of 0 mm keeps the outer edge where it was, so all the extra width moves inward.

The Target Wheel Position Calculator is a tool that finds the offset you need to place a new, wider wheel at a chosen outer position. It reverses the usual question from "where will this wheel sit?" to "which wheel puts the edge here?"

Enthusiasts use it to order custom wheels and to filter catalogs to the right offset.

This calculator has 4 uses: custom wheel orders, flush stance, catalog filtering and staggered setups.

• Order custom wheels: Specify the exact offset.
• Get a flush stance: Solve the offset for flush fitment.
• Filter catalogs: Search for the right ET.
• Plan staggered setups: Solve front and rear separately.