A tire support ring for pneumatic tires in the event of loss of inflation pressure is disclosed. The support ring comprises an annular main body and a plurality of noise dampers. The main body made is made of an elastic material and provided on both sides thereof with a plurality of holes each having a pair of opposite radially-extending side surfaces. The noise damper is made of a spongy material and inserted into the hole such that gaps of from 2.0 to 10.0 mm are formed between the side surfaces and the damper. The hole has a closed end, and in the hole, a hollow space is remained behind the inserted noise damper.