Yahoo Autos The Shocking Difference Between the Current and 2017 F1 Tires
Testing and development of Pirelli's new 2017-sized tires is continuing this week, with Ferrari's Kimi Raikkonen and Sebastian Vettel getting familiar with the new grip levels at Barcelona while Mercedes is doing the same in France at the Paul Ricard Circuit with Pascal Wehrlein behind the wheel.
Following the first test days last month, Pirelli asked all three participating teams to adjust their mules further to simulate the 2017 downforce levels more accurately. The new tires are 25 percent wider than the current ones at both the front and rear, with the slicks measuring 305/670-13 (front) and 405/670-13 (rear). The diameter of intermediate wets is 675mm, while full wets are 680mm.
On Tuesday, 111 laps were completed by Ferrari and 134 laps by Mercedes in warm and dry conditions, with Pirelli reporting no issues.
Formula 1 cut back on both the track and tire width after the 1992 season, with the rubber remaining roughly the same size ever since. But the fats are back.
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