Changes to the Formula 1 tyres due to be introduced in June 2013 will be less dramatic than some have feared or hoped for, supplier Pirelli said on Monday.
Pirelli's planned changes to its controversial tyres for Canada and beyond are now under a dark cloud.
F1's owners have voted to keep Bernie Ecclestone at the helm of the sport, despite allegations of bribery.
Sporting director Toto Wolff has admitted Mercedes was disappointed by McLaren's move to use Honda engines in 2015.
Mark Webber will be under pressure to produce his best at next weekend's 2013 Monaco Grand Prix.
Ferrari has indirectly criticised rival Formula 1 team Red Bull in a column on its website about the lingering tyre degradation issue.
Niki Lauda has hailed Pirelli's move to alter the design of its race tyres ahead of the 2013 Canadian Formula 1 GP in June.