RECENTLY CHANGED TYRES OF SAME SIZE AS BEFORE 165/65 R14
CHANGED FRONT HUBS
CHANGED FRONT BACK BREAKS
THROTTLE BODY CLEANED
CHANGED OIL FROM 10W40 TO 5W30
FINE IN CITY ON 70-80 SOEED BUT ON MOTORWAY NOT GOING ABOVE 110 DESPITE PRESSING FULL SPEED. WHAT COULD BE THE ISSUE?