The four-time world champion will drive throughout the day on an artifically dampened circuit, as Pirelli investigate how the 25 percent increase in tyre width affects the behaviour and performance of their intermediate and wet compounds. Esteban Gutierrez will take over driving duties tomorrow, again behind the wheel of the Ferrari.
The Fiorano trial is part of a wider testing programme which will incorporate 10 dates and three teams - Ferrari, Red Bull and Mercedes - as F1's official tyre manufacturer ramps up preparations for next year. All data from the tests will be shared will all teams.
While Vettel completed a few installation laps on slick tyres, Red Bull will be the first team to properly trial Pirelli's 2017 slicks during a two-day test at Mugello, Italy, on August 3-4.
Pirelli have already run a separate test programme to trial different materials and structures for their tyres earlier this year.
Test dates for 2017-specification tyres
| SESSION | DATE | TEST DAYS | CIRCUIT | TEAM | TYRE TYPE |
| 1 | Aug 1-2 | 2 | Fiorano | Ferrari | Wets |
| 2 | Aug 3-4 | 2 | Mugello | Red Bull | Slicks |
| 3 | Sep 6-7 | 2 | Barcelona | Ferrari | Slicks |
| 4 | Sep 6-7-8 | 3 | Paul Ricard | Mercedes | Slicks |
| 5 | Sep 21-22 | 2 | Paul Ricard | Mercedes | Wets |
| 6 | Oct 12-13 | 2 | Barcelona | Mercedes | Slicks |
| 7 | Oct 14-15-16 | 3 | Abu Dhabi | Red Bull | Slicks |
| 8 | Nov 2-3 | 2 | Abu Dhabi | Red Bull | Wets |
| 9 | Nov 14-15-16 | 3 | Abu Dhabi | Ferrari | Slicks |
| 10 | Nov 29 | 3 | Abu Dhabi | All | Final validation |
