Abstract: Disclosed is a rubber pneumatic tire for vehicles which has two beads for bearing against the rim of a wheel. Embedded in each bead is a core ring which has a shaped ring and around which a carcass insert which is embedded into the rubber material of the tire is laid, for anchoring same. Each shaped ring comprises a material which chemically bonds to the rubber material, and contains a winding of high-strength fibres, which is laid in the shaped ring and which holds together and strengthens the shaped ring.

Abstract: A tubular reinforcing element for the interior of vehicle doors is made from a steel tube having a carbon content of 0.14-0.18%, 0.15-0.30% silicon, 1.60-1.80% manganese, 1.90-2.10% chromium, 0.45-0.60% molybdenum and at least 0.015% aluminum. This tube is annealed at 900.degree.-930.degree. C. and then aircooled. Thereafter the portions of the tube which are to be deformed are heated to above the temperature of the alpha-gamma phase change (A.sub.3 on the iron-carbon equilibrium diagram), then deformed to the desired shape and aircooled. All percentages are by weight.