Marcus Ericsson says a breakthrough in the way his Sauber Formula 1 team manages its tyres is the key reason behind the upturn in form. The Swiss team, running a year-old Ferrari engine, fell off the back off the pack after the summer break, but has turned a corner in the last three races. In Mexico, Ericsson ran in the points for nearly half of the race before losing track position when the virtual safety car was deployed and then ultimately retired with what the team described "as technical issue around the rear inboard suspension". "The tyres this year are more conservative, less peaky and do not degrade so much, but there is still a small window where they work the best...
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