P1racenews AI automatic summary:
The NTT IndyCar Series and official chassis partner Dallara have informed its teams of new rear suspension uprights the Italian firm has in production that will become mandatory for all teams to us…
The NTT IndyCar Series and official chassis partner Dallara are introducing new rear suspension uprights for teams to use on ovals starting in April at the Indy Open test and in competition at May’s Indianapolis 500. These redesigned rear uprights, which are stronger than the current ones, are meant to prevent failures like the one seen in last May’s crash involving Felix Rosenqvist’s Arrow McLaren car and Kyle Kirkwood’s Andretti Global entry. The incident revealed a failure in the retaining nut holding the hub within the wheel bearing and upright, prompting the design of a new retaining nut with a larger flange mandated by IndyCar. Following further evaluation, new larger retaining nuts are also required for the front uprights, with ovals needing them in 2024 and all races in 2025 as per the bulletin distributed to the paddock.
