Juve's recent dominance in Italy has been built on their incredible record at the back, with the likes of Leonardo Bonucci and Giorgio Chiellini forming an almost unbeatable partnership to lead the Italians to six straight Scudetti.
And there are signs that this season Massimiliano Allegri's men have taken that form over to Europe as well.
Gianluigi Buffon has seen just one goal slip past him in six knockout matches so far - Kylian Mbappe beat the veteran goalkeeper when the semi-final tie against Monaco was all but over.
Nevertheless, Ronaldo believes there must be a way through when Madrid and Juve clash on June 3 in Cardiff's Millennium Stadium.
"They like using tight coverage, like Atletico.
"While Juventus certainly have a superb defence, there is always a weak spot, we need to find out how to attack it."
No team has managed to retain the Champions League since it switched to its current format from the European Cup back in 1992-93.
But Ronaldo affirmed that if any side is capable it is Real Madrid, who have won the title twice in the last three seasons.
"Every player in the dressing room wants to make history. It would be a privilege to be the first team to win consecutive editions of the Champions League," he explained.
"We are aware it will be an extremely difficult match but we are Madrid so we know we have a realistic shot at winning.
"This final will be similar to the previous ones [against Atletico Madrid], it's basically a coin flip.
"Both squads will attempt to take advantage of the opponent's mistakes; whoever plays a cleaner match should prevail, hopefully it's us.
"It will be an exciting match-up for both players and fans, we have high expectations."