Garmin completely changed the mounting system for its large-screen truck GPS units, and if you own a Garmin OTR 800, 810, 820, 1000, 1010, or 1020, you’ve probably already noticed something doesn’t fit the way older mounts did.
That’s because these units use a larger 22mm ball system paired with a powered magnetic cradle, instead of the older 17mm system found on smaller GPS devices. That change improves stability — but it also means most traditional GPS mounts simply won’t work.
In this guide, we’ll break down the best mounting options specifically for OTR truck setups, including long-reach mounts, permanent installs, and heavy-duty solutions that actually hold up in real driving conditions.
Why OTR Mounting Is Different
Truck interiors are completely different from passenger vehicles. You’re dealing with:
- Deeper dashboards
- Longer distance to the windshield
- Increased vibration from the road
- Larger devices (8”–10” screens)
That combination is exactly why Garmin moved to the 22mm system. It provides a stronger connection point and better stability for larger GPS units.
If you’re not familiar with how this system works, you should first understand the difference between 17mm and 22mm mounts. That determines what will and will not fit your device. View our guide to 17mm versus 22mm mounts for more information.
What Comes in the Box (And When It Falls Short)
Garmin includes two mounting options with most OTR units:
- Suction cup windshield mount (22mm ball)
- Screw-down dash mount (22mm ball)
These are actually solid mounts for basic setups. But in a truck, they often fall short because:
- The windshield may be too far away
- The dash angle limits positioning
- Long-term vibration loosens standard mounts
If you drive long hours or need a more precise viewing angle, upgrading your mount makes a big difference.
Best Mount Types for Garmin OTR GPS Units
1. AMPS-Based 22mm Mount (Best Overall Foundation)
If you want a serious setup, this is where you start. An AMPS-to-22mm ball adapter allows you to connect your GPS to a much wider ecosystem of mounting options.
This type of mount works with:
- Custom vehicle brackets like those from ProClip
- Fixed dash installations
- Fleet and commercial setups
It creates a stable base that won’t shift, even in high-vibration environments.
Best for: permanent installs, fleet vehicles, serious drivers
2. Extended Arm Suction Mount (Best for Reach)
One of the biggest problems in trucks is reach. A standard mount often leaves the GPS too far away to use comfortably.
An extended arm suction mount solves that problem by bringing the device closer to the driver while maintaining windshield positioning. THis one extends to over 18 inches. The metal arm promotes stability.
Look for:
- Metal or reinforced arm
- Locking suction base
- 22mm compatibility
Best for: semi trucks, large cabs, long-distance drivers
3. Flexible Suction Mount (Clean Install Option)
If you want to maneuver the mount into a custom angle, a flexible gooseneck is what is needed. Use the lever to lock the mount into place.
When properly installed, these mounts:
- Allow you to maintain eye level
- Angle towards the driver
- Provide a clean setup
This is a great option for drivers who want a quick traditional mounting location.
Best for: clean installs, flat dashboards, minimal movement
4. Friction Dash Mount (Quick Setup)
Friction-style mounts (similar to the old “bean bag” mounts) are still a viable option for truck drivers who want flexibility.
They sit on top of the dashboard and rely on weight and grip to stay in place.
While not as secure as fixed mounts, they are:
- Easy to install
- Portable between vehicles
- Good for temporary setups
Best for: quick installs, switching vehicles
Where to Mount Your Garmin OTR in a Truck
Positioning matters just as much as the mount itself.
Windshield Mounting
Best visibility, but may require a long arm to bring the device closer.
Dashboard Mounting
More stable and closer to the driver, but requires a flat surface.
Center Console / Custom Bracket
Best long-term solution. This is where AMPS-based mounts really shine.
Common Mistakes to Avoid
- Buying 17mm mounts: They will not fit your OTR cradle
- Using weak suction mounts: They fail under truck vibration
- Mounting too far away: Makes the GPS difficult to use
- Ignoring adjustability: Fixed mounts can limit usability
Installation Tips for Truck Drivers
- Keep the GPS within easy reach for touch controls
- Avoid blocking forward visibility
- Use reinforced mounts for long-haul driving
- Check mount tightness regularly
Bottom Line
The Garmin OTR series requires a different approach to mounting than older GPS units. The move to a 22mm ball system improves stability, but limits compatibility with traditional mounts.
The best setup depends on your truck and driving style:
- Use included mounts for basic setups
- Upgrade to extended arms for better reach
- Use AMPS-based mounts for maximum stability
Once you understand the system and choose the right mount type, you’ll end up with a setup that is safer, easier to use, and built to handle long hours on the road.
