In 1964 Clark came within just a few laps of retaining his World Championship crown but, just as in 1962, an oil leak from the engine robbed him of the title, this time conceding to John Surtees. Tyre failure damaging the Lotus's suspension put paid to that year's attempt at the Indianapolis 500. He made amends and won the Championship again in and also the Indianapolis 500 in the Lotus 38.