Good work with the offset:)

Here properly working offset java if need
now the specs does not change after car repair

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package java.game.cars;

import java.render.osd.*;
import java.io.*;
import java.util.*;
import java.util.resource.*;
import java.game.*;
import java.game.parts.rgearpart.reciprocatingrgearpart.*;

public class NAME extends Wheel
{
float f_offset, default_offset, old_offset, diameter, width;

public NAME( int id )
{
name = "NAME";

rim_type = rtFACTORY;
diameter = 19.0;
width = 11.0;
default_offset = 0.0;
f_offset = default_offset;
SetupWheel( diameter, width, default_offset);

description = "Variable offset";
}

public void load( File saveGame )
{
super.load( saveGame );

int save_ver = saveGame.readInt();

if (save_ver >= 1)
{
f_offset = saveGame.readFloat();
setSlotPos( 1, new Vector3(f_offset/1000.0, 0, 0), null );
}
}

public void save( File saveGame )
{
super.save( saveGame );

int save_ver = 2;

saveGame.write( save_ver );
if (save_ver >= 1)
{
saveGame.write( f_offset );
}
}

public int isTuneable()
{
return true;
}

public void buildTuningMenu( Menu m )
{
old_offset = f_offset;

m.addItem( "Offset", 1, f_offset, -105.0, 65.0, 1.1, null ).printValue(" %1.1f");

m.addItem( "Reset to factory defaults", 0); //this should always be with cmd=0

GameLogic.player.car.wakeUp();
}

public void endTuningSession( int cancelled )
{
if( cancelled )
{
f_offset = old_offset;
}
else
{
if (f_offset != old_offset)
GameLogic.spendTime(5*60);
getCar_LocalVersion();
if (the_car)
the_car.forceUpdate();
}
}

public void handleMessage( Event m )
{
if( m.cmd == 0 )
{
f_offset = default_offset;
m.gadget.osd.findGadget( this, 1 ).setValue( default_offset );
setSlotPos( 1, new Vector3(f_offset/1000.0, 0, 0), null );
}
else
if( m.cmd == 1 )
{
f_offset = ((Slider)m.gadget).value;
((Slider)m.gadget).changeVLabelText( Float.toString(f_offset, " %1.1f"));
setSlotPos( 1, new Vector3(f_offset/1000.0, 0, 0), null );
}
}

public void updatevariables()
{
super.updatevariables();
setSlotPos( 1, new Vector3(f_offset/1000.0, 0, 0), null );
}

}