Hi, Most A Class conversions have bodywork over-reaching the chassis track, resulting in heavy rolling going around corners and wheels 'lost' within wheel arches. I expect this has been considered by the converters (- indeed FIAT has increased the track of more recent MH conversions.) There are now hub-centric spacers (see the TUV approved Sprinter spacers at http://www.wheelspacers.uk.com which could increase track by 4inches per axle) and enhance the handling and appearance of Sprinter based A Class conversions. These hub-centric spacers maintain the load on the hub rather than "thick washer spacers" which transfer it to the wheel studs. I've emailed Mercedes about the feasibility of fitting such spacers and have expected responses which might include references to hub loads in excess of design parameters but have had no reply. Has anyone else made better headway with chassis manufacturers on fitting hub centric spacers?