The Manchester United defender urges his team-mates to retain their focus after they took another step towards the club's 20th championship by beating Stoke City
Sir Alex Ferguson's team are 15 points clear of Manchester City, who have a game in hand, at the top of the table with six matches to play.
Sunday's 2-0 win over Stoke City was United's eighth victory their last nine league fixtures and Vidic believes that they will enter the final straight full of confidence.
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"It's important for players like this to be in good form for the games to come."
United face West Ham at Upton Park on Wednesday and Vidic is expecting another physical encounter after coming through a similar test against Stoke.
"Stoke is always a difficult place to go to but we fought for every ball, played some good football and, in the end, I think we deserved to win," he added. "It was physical.
"You know they're going to get the ball to the forwards, they're good at set-pieces, they're going to challenge defenders.
"Now it's West Ham and we have to play well again. They play in a similar style to Stoke – we're going to have long balls and set-pieces to deal with."