I have been developing my own land rover creation. 6 studs wide. I am using the same wheels and wheels arches. again inspiration is based on the train windscreen on your cuusoo page. did you use scale drawings. i have, and the tyres i really wanted were 22m diameter 8mm wide. the ones you/i have use are the closest, but are actually too wide. the arches do reduce the problem. A great product though, i have supported on cuusoo, hopefully inspired to post mine soon. cheers pete.