Whilst out in Mrs Mints Polo we had a puncture. No problem, jack up, wheel off, replace with spare, continue. Except....wheel, minus bolts refused to release away from hub. After application of borrowed brick and piece of wood, spare attached and journey completed. New tyre fitted and at home checked all wheels for easy release. Each wheel required force to remove wheel from hub. Now refitted with barrier of copper grease between alloy wheel and steel hub to avoid similar problem. I guess it's the first time the wheels have been removed away from the hubs...... have you checked yourts recently?