racing news-F1 set to formalize points system, tire changes

FIA is also proposing to have the top-10 race qualifiers start on their qualifying tires, while the rest of the field could use new tires. F1 will also reduce the number of dry-weather tires available to teams to "encourage teams to run during the Friday practice sessions."

"We're not 100 percent sure on this yet," Tost said of having to race on the tires used in qualifying, although he did believe this would make races more interesting.

Measures to exclude the contentious double diffuser -- a rear wing design that creates more downforce -- from 2011 were also agreed on.

Teams protested against Brawn GP, Toyota and Williams last year over their interpretation of the diffuser rule after the design helped eventual constructors' champion Brawn pull away from the pack. However, the double diffuser was later cleared for use.

The proposals will be submitted to the World Motor Sport Council for approval within 48 hours, FIA said.