Example Open Wheel Downforce base

<!-- If you plop this SubHandlingData on a car's handling, some of its Spoilers will get x10 downforce. The Indexes relate to specific tuning indexes, but are not the same, so I've set up this chain up to Index 55 as base. Any Spoiler/FronBumper tuning that's a match will enable x10 downforce on itself. After that, sadly, is matter of editing the items reducing them to figure out what Index implies the First Spoiler wna what Index implies the first Front Bumper.
Remember that indexes only go up, and Spoiler indexes are higher than Front Bumper indexes. -->
<SubHandlingData>
   <Item type="CCarHandlingData">
      <strAdvancedFlags>8000000</strAdvancedFlags>
      <AdvancedData>
         <Item type="CAdvancedData">
            <Index value="5" />
            <Value value="10.0" />
         </Item>
         <Item type="CAdvancedData">
            <Index value="10" />
            <Value value="10.0" />
         </Item>
         <Item type="CAdvancedData">
            <Index value="15" />
            <Value value="10.0" />
         </Item>
         <Item type="CAdvancedData">
            <Index value="20" />
            <Value value="10.0" />
         </Item>
         <Item type="CAdvancedData">
            <Index value="25" />
            <Value value="10.0" />
         </Item>
         <Item type="CAdvancedData">
            <Index value="30" />
            <Value value="10.0" />
         </Item>
         <Item type="CAdvancedData">
            <Index value="35" />
            <Value value="10.0" />
         </Item>
         <Item type="CAdvancedData">
            <Index value="40" />
            <Value value="10.0" />
         </Item>
         <Item type="CAdvancedData">
            <Index value="45" />
            <Value value="10.0" />
         </Item>
         <Item type="CAdvancedData">
            <Index value="50" />
            <Value value="10.0" />
         </Item>
         <Item type="CAdvancedData">
            <Index value="55" />
            <Value value="10.0" />
         </Item>
      </AdvancedData>
   </Item>
</SubHandlingData>