Here are some examples:
* Je fais du quad tous les week-ends. (I go quading every weekend.)
* Ils adorent faire du quad dans les bois. (They love to go quading in the woods.)
* Est-ce que tu as déjà fait du quad ? (Have you ever gone quading?)
You can also use the verb "rouler" (to ride), but it's less common: "Rouler en quad" (to ride a quad).