Wheel comprising a non-pneumatic tire

A non-pneumatic tire for a wheel, the non-pneumatic tire comprising:

• an annular beam comprising a plurality of openings distributed in a circumferential direction of the non-pneumatic tire, the plurality of openings extend from a first lateral side of the non-pneumatic tire to a second lateral side of the non-pneumatic tire, configured to deflect at a contact patch of the non-pneumatic tire;
• and
• an annular support disposed radially inwardly of the annular beam and configured to resiliently deform as the wheel engages the ground;
• wherein a ratio of a volume of the annular beam over a surface area of the annular beam is no more than 12 mm3/mm2;
• for which:
• said volume is a volume bounded by an outer peripheral extent, an inner peripheral extent, and the first lateral side, and the second lateral side of the annular beam, minus a cumulative volume of the openings;
• and
• said surface area is an area of the outer peripheral extent, the inner peripheral extent, and from the inner peripheral extent to the outer peripheral extent minus area of the openings of the first lateral side and second lateral side, plus the cumulative surface area of the annular beam that defines the openings from a first lateral side to a second lateral side;
• and the annular beam comprises elastomeric material having a tan(delta) of no more than 0.1 when tested at 4% strain, 10 HZ, and 50° C.