2005–2006: Regulation changes and first retirement thumb|Schumacher battling with Kimi Räikkönen in 2005 during the . Due to rule changes, he achieved only one win that year. Rule changes for the season required tyres to last an entire race, tipping the overall advantage to teams using Michelins over teams like Ferrari that relied on Bridgestone tyres. The rule changes were partly in an effort to dent Ferrari's dominance and make the series more interesting. The most notable moment of the early season for Schumacher was his battle with Renault R25 driver Fernando Alonso at the , where he started 13th and finished only 0.2 seconds behind Alonso. Less than halfway through the season, Schumacher stated: "I don't think I can count myself in this battle any more. It was like trying to fight with a blunted weapon. If your weapons are weak you don't have a chance." Schumacher's sole win in 2005 came at the in a 1–2 finish with Rubens Barrichello. Before that race, the Michelin tyres were found to have significant safety issues. When no compromise between the teams and the FIA could be reached, all but the three teams using Bridgestone tyres dropped out of the race after the formation lap, leaving only six drivers on the grid. Schumacher retired in 6 of the 19 races, and finished the season in third with 62 points, fewer than half the points of World Champion Alonso.
2005–2006: Regulation changes and first retirement thumb|Schumacher battling with Kimi Räikkönen in 2005 during the . Due to rule changes, he achieved only one win that year. Rule changes for the season required tyres to last an entire race, tipping the overall advantage to teams using Michelins over teams like Ferrari that relied on Bridgestone tyres. The rule changes were partly in an effort to dent Ferrari's dominance and make the series more interesting. The most notable moment of the early season for Schumacher was his battle with Renault R25 driver Fernando Alonso at the , where he started 13th and finished only 0.2 seconds behind Alonso. Less than halfway through the season, Schumacher stated: "I don't think I can count myself in this battle any more. It was like trying to fight with a blunted weapon. If your weapons are weak you don't have a chance." Schumacher's sole win in 2005 came at the in a 1–2 finish with Rubens Barrichello. Before that race, the Michelin tyres were found to have significant safety issues. When no compromise between the teams and the FIA could be reached, all but the three teams using Bridgestone tyres dropped out of the race after the formation lap, leaving only six drivers on the grid. Schumacher retired in 6 of the 19 races, and finished the season in third with 62 points, fewer than half the points of World Champion Alonso.