Rank 9 honours John Surtees — the only person to win world championships on both two and four wheels. Surtees took four 500cc motorcycle titles (1956, 1958–1960) with MV Agusta before switching to cars; his 1964 Formula One championship with Ferrari and the 158 F1 made history that no rider or driver has duplicated. The 1.5-litre rear-engine Ferrari, campaigned against Clark's Lotus and Hill's BRM, crowned Surtees at Mexico City after a season-long fight with Graham Hill. His technical feedback shaped Ferrari's transition from front-engine sharknose glory to rear-engine competitiveness; later he founded Surtees Racing Organisation and the Henry Surtees Foundation after son Henry's death in a Formula Two accident. Wallimilist renders the red 158 side profile, blue-helmet portrait, and 158 F1 background type exactly as the master PNG dictates.