Driving an RV through mountain passes is mostly about going slower than feels normal, staying ahead of the grade, and not trying to drive it like a car. The first thing is to understand your RV’s weight and how it behaves on hills. If you have a towable, make sure the tow vehicle is rated for the combined load. If it’s a motorhome, know how the transmission, engine brake, and service brakes work before you hit the mountains. Read the owner’s manual and learn how to use lower gears on both climbs and descents.
On the way up, keep your speed modest and don’t let the engine lug. It is usually better to shift down early and let the engine work in a stronger power band than to wait until you’re struggling. If you see the rig losing speed on a long grade, stay calm and let faster traffic pass when it’s safe. Pulling onto a turnout or slower lane when available is a lot less stressful than forcing the pace.
Coming down is where many drivers get into trouble. Use a lower gear before starting the descent, not halfway down after the brakes are already hot. The goal is to let engine braking hold your speed as much as possible so you only need the service brakes in short, firm applications. Avoid riding the brakes constantly, because that can overheat them fast. If you smell hot brakes or feel fading stopping power, slow down immediately and pull over at a safe turnout to let everything cool.
Pay close attention to road signs for steep grades, runaway truck ramps, sharp curves, and chain requirements. In bad weather, never assume the pass will be manageable just because the road is open. Rain, snow, fog, and crosswinds can make an RV much harder to control, especially on narrow roads with drop-offs. If conditions look poor, waiting a few hours or even a full day is often the smartest move.
Tires, brakes, and fluids should be in good condition before you go. Check tire pressure cold, inspect tread, and make sure your brakes are serviced. Keep plenty of following distance, because mountain traffic can stop suddenly. Also, don’t let the tank get too low on fuel before heading into remote passes, since stations can be far apart.
The biggest mindset change is patience. Mountain driving rewards steady, predictable inputs. Slow down early, shift early, brake gently, and give yourself more room than you think you need. If you’re new to it, start with easier passes in daylight and good weather so you can build confidence before tackling the steeper ones.
