Wider tires only work if you have wider rims. If rim width is limiting your tire choices, then higher pressure is the way to go. You're looking to eliminate that "lightbulb" profile that allowed a tired to roll over. A wide/wide combo can still squirm under lower pressure, but the sidewall is better supported by the rim. With I high enough pressure rating on the tire, you can tune the amount of squirm you're getting with varying your tire pressure, when your tire and rim are well matched.