Would you like to ask if the energy-saving tyres, e.g. Michellin Energy Saver, Fulda Eco-Control, or Conti Eco-Contact etc. are also available for such small tire sizes as the Marbella. I don’t know 100% exactly with the tyre size designations. There are probably 13″ tyres probably 135/60. or 135/80. Maybe also 145er. At the moment I have Indonesian tyres (brand name Champiro) on it, which are certainly not energy-saving tyres. that something deteriorates the grip/brake properties.