RV Mirror Adjustment

Proper alignment of an RV's side mirrors. Critical for safe driving — RV blind spots are significantly larger than car blind spots.

Also called: RV mirror adjustment, mirror adjustment, side mirror setup, tow mirror adjustment

RV mirror adjustment is the proper alignment of an RV’s side mirrors before driving. Critical for safe driving — RV blind spots are significantly larger than car blind spots and proper mirror setup is the only way to manage them.

Why RV mirrors are different

  • Larger surface area — RV mirrors are 12-24” wide vs. 6-9” car mirrors
  • Often have a small convex mirror integrated for blind spot visibility
  • May be telescoping to accommodate trailer width
  • Power-adjusted in most modern rentals

The adjustment routine

Before every drive:

Step 1: Position yourself in the driver’s seat

Sit normally with your back against the seat and hands at the wheel.

Step 2: Adjust the main mirror

  • Outer edge should show the rear corner of the rig (or trailer end)
  • Inner edge should overlap slightly with the back glass view
  • Vertical aim should center on the side of the rig at about door-handle height

Step 3: Adjust the convex (blind spot) mirror

  • Aim downward and outward to show the area beside the rig
  • Should show the rear wheel when properly adjusted
  • Should overlap with the main mirror’s view

Step 4: Verify with a walk-around

Get out, walk around the rig, return and check:

  • Can you see your own feet in the bottom of the side mirror when standing 4 ft from the rig?
  • Can you see at least 2 lanes of traffic in both side mirrors?

Tow mirrors (for trailer towing)

When towing a trailer, factory mirrors may not extend far enough out to see past the trailer width. Solutions:

  • Telescoping factory mirrors — extend the mirror outward
  • Clip-on tow mirrors — temporary add-ons for trailer towing
  • Aftermarket replacement — installed permanently on the tow vehicle

Most peer-to-peer trailer rentals come with appropriate mirror setup. Verify at pickup.

Common adjustment mistakes

  • Mirrors aimed at the side of the rig — wastes the mirror’s view
  • Convex mirror aimed too high — shows sky instead of blind spot
  • Not readjusting after passenger swap — mirrors are personalized
  • Folded for storage but not unfolded — happens with auto-fold mirrors

Highway driving with proper mirrors

With properly adjusted mirrors, you should be able to:

  • See vehicles approaching from behind in your mirror
  • Track vehicles overtaking you through your blind spot
  • See the white line on the side of the road in your peripheral view
  • Glance rather than turn your head — eyes-on-the-road safety

Mirror types in different RVs

Rental classTypical mirrors
Class A motorhomeLarge 18-24” power mirrors with convex
Class C motorhomeTruck-derived 12-18” power mirrors
Class B camper vanStandard tall-van power mirrors
Tow vehicle for trailerFactory mirrors plus possibly extenders

Check during the walkthrough

During the walkthrough, ask the rental staff to demonstrate:

  • Mirror adjustment from inside the cab
  • Mirror folding for storage
  • Convex mirror positioning
  • Tow mirror extension (if applicable)