Wenger’s side head back to Wembley as firm favourites to see off the Championship strugglers and advance to a second successive FA Cup final.
Arsenal have risen to second in the Premier League after reeling off eight consecutive victories, a powerful run that has stretched to 11 wins from 12 games in all competitions.
In contrast, Reading, languishing 18th in the second tier table, are not mathematically certain of avoiding relegation to League One following a miserable run of one win in their last 10 matches.
The Royals have failed to win any of their five matches since beating Bradford in an FA Cup quarter-final replay.
But Wenger has been scarred by several of Arsenal’s recent encounters with lower league teams and is determined to ensure the Gunners don’t underestimate Steve Clarke’s men.
To drive home the point he recalled last season’s FA Cup semi-final against second tier Wigan, in which Arsenal fell behind and only equalised in the 82nd minute before eventually securing a barely-deserved victory in a penalty shoot-out.
“We know that it (semi-final) is always tricky. We have learnt from Wigan last year,” Wenger said.
“The urgency level will be quite high in our team.
“Reading have many players who have the experience in the Premier League.
“They have a very efficient style, who go a lot for crosses, so for us they can be a danger going forward.”
Wenger has a near full-strength side to choose from this weekend, with England midfielder Jack Wilshere having returned to full fitness.
“Everybody feels that it is difficult to get in the team, all the players have top, top quality,” Wenger said.
“They have to accept it and to respect the decision, that is what you want from the players.”
– Irritable mood –
But although everything has been going swimmingly for Arsenal of late, Wenger was in a rather irritable mood in his pre-match press conference ahead of the Reading tie.
He was especially irked by questions about Jurgen Klopp, the Borussia Dortmund coach who has been linked with Wenger’s job in the past and will leave the German club at the end of the season.
“I’m not an agency to place managers and I like every manager and respect everybody, but I find that circus a bit ridiculous,” he said.
Asked whether Klopp, reported to be a potential Manchester City target, would suit Arsenal in the future, Wenger snapped: “I already answered this question.”
Wenger was also vexed by the decision to schedule Chelsea’s crucial Premier League clash with Manchester United for almost the same time as his club’s meeting with Reading.
“I am a bit surprised that a (Premier League) game of the same stature is played at the same time. There is a bit of conflict there that is difficult to understand,” Wenger said.
“Something should be done about it. You would like it (FA Cup) to be the unique competition, especially a semi-final and a final. You would want it not to conflict with other competitions.”
While Arsenal’s internationals can afford to take a semi-final in their stride, it may be slightly harder for Reading’s journeymen to avoid being star-struck on the big stage.
It has been 88 years since the Royals last reached the semi-finals and they have never appeared in the final.
But former West Bromwich Albion boss Steve Clarke, who won the Cup as a Chelsea player, said: “You can’t go to Wembley and play the occasion.
“The supporters can go and enjoy the day, that’s their little reward for a cup run.
“For us, it is to go there with a mentality that we are there to do a job and if we do that right we can go through.”