RV Speedometer Not Accurate?
Track Your Real Speed with GPS
Get precise speed tracking for your motorhome or RV. Perfect solution for oversized tires, weight distribution issues, and older dashboard electronics. Works offline in remote areas.
5.8 Million+ Downloads β’ 4.7β Rating β’ Since 2014
Common RV Speedometer Problems
Aftermarket Tires
Upgraded to larger tires for better ground clearance or towing? Your factory speedometer was calibrated for original tire size. Even a 2-inch diameter difference can cause 5-10% error.
Weight Distribution
RVs carry varying loads - full water tanks, cargo, passengers. Weight affects sensor accuracy and tire compression, causing speed reading variations that GPS eliminates.
Older Electronics
Vintage motorhomes (1980s-2000s) often have failing dashboard electronics. Repair costs $300-800+ while GPS offers a modern, reliable alternative.
Tire Wear
As RV tires wear down over thousands of miles, the effective diameter decreases. GPS remains accurate regardless of tire condition.
GPS Speedometer: The RV Owner's Solution
Satellite Accuracy
Measures real ground speed via GPS satellites. Independent of tire size, weight, or mechanical calibration.
Cost Effective
Free app vs $300-800 for speedometer repair. No installation, no modifications to your RV dashboard.
Works Offline
Perfect for remote RV parks and boondocking. GPS signals work anywhere, no cellular service needed.
Features Perfect for RV Travel
πΊ HUD Display Mode
Project speed onto your windshield. Reversed display reflects on glass for heads-up viewing. Perfect for RVs with high dashboards where phone mounting is challenging.
π± Large Display Numbers
Extra-large speed display readable from driver's seat in spacious RV cabs. Adjustable brightness for day/night driving.
πΊοΈ Trip Recording
Track your RV adventures! Record distance, duration, route, and average speed. Learn more about trip recording features. Perfect for logbooks, fuel efficiency tracking, and trip memories.
π¦ Speed Limit Alerts
Automatic detection of speed limits helps you stay safe and avoid tickets. Especially useful when towing trailers with different speed limit requirements.
π― Altitude & G-Force
Monitor altitude changes in mountain passes. G-force meter helps understand acceleration/braking impact on your RV and cargo.
How to Set Up GPS Speedometer in Your RV
Download & Launch
Install GPS Speedometer MPH Tracker from the App Store. No registration required.
Mount Your Device
Use a dashboard mount or windshield mount designed for larger vehicles. Ensure clear view of sky for GPS signal.
Enable HUD Mode (Optional)
Tap HUD button to project speed on windshield. Works best in low light conditions or with polarized glass.
Start Driving
GPS locks in seconds. Compare with your factory speedometer to see the difference!
Pro Tips for RV Owners
π‘ Recalibrate After Tire Changes
Changed your RV tires? Your GPS speed won't change, but your factory speedometer might now be off by 5-10%. Use GPS to verify accuracy before trusting the dashboard. Other vehicle types like car speedometers have the same issue.
β°οΈ Mountain Driving Accuracy
GPS speedometers excel in mountainous terrain where altitude changes can affect mechanical speedometers. Get accurate readings whether climbing Rockies or descending into valleys.
π Battery Management
Keep device plugged into 12V outlet during long RV trips. GPS tracking with screen-on is power-intensive, so continuous charging prevents battery drain. Most RVs have multiple 12V/USB ports.
π Fuel Efficiency Tracking
Use trip recording to track exact miles driven. Compare with fuel receipts to calculate true MPG. Discover how speed affects your RV's fuel consumption.
βοΈ Legal Information
Legal Notice: GPS Speedometer MPH Tracker is designed as a supplementary tool for speed monitoring and verification. Check your local and state laws regarding speedometer requirements for RVs, as some jurisdictions may require working factory speedometers for vehicle registration and road use. GPS Speedometer MPH Tracker is not intended to replace required vehicle equipment. Users are responsible for complying with all applicable laws and regulations.
Frequently Asked Questions
Why is my RV speedometer inaccurate?
RV speedometers become inaccurate due to several factors: aftermarket tires that differ from factory size, weight distribution affecting sensor accuracy, tire wear over time, and older dashboard electronics prone to failure. Even a small tire size difference can cause significant speed reading errors.
Can I use GPS speedometer as my primary speedometer in an RV?
GPS speedometers are highly accurate and can serve as a reliable backup or verification tool. However, check your local laws regarding primary speedometer requirements. In most jurisdictions, GPS speedometers are legal as supplementary devices. They're perfect for verifying your factory speedometer's accuracy.
How accurate is GPS speed tracking for RVs?
GPS speed tracking is typically accurate within Β±1 mph under normal conditions. Unlike mechanical speedometers that can drift 5-10% off with tire changes, GPS calculates speed based on satellite positioning, making it independent of tire size, wear, or mechanical calibration.
Do I need internet for GPS speedometer in my RV?
No! GPS speedometer works completely offline. GPS signals come from satellites, not cellular networks. This makes it perfect for RV travel through remote areas where cell service is unavailable. Core speed tracking features work without any internet connection.
Will changing tire size on my RV affect GPS speed?
No, GPS speed is completely independent of tire size. This is one of the biggest advantages over factory speedometers. Whether you upgrade to larger tires or downsize, GPS speed remains accurate because it measures actual ground speed via satellites, not wheel rotations.
How do I mount my iPhone in an RV for speedometer use?
For RVs, use a dashboard mount with strong suction or adhesive designed for larger vehicles. Consider HUD mode to project speed onto the windshield, or use Picture in Picture mode to overlay speed on your navigation app. Many RVers use tablet-sized devices mounted on the dash for better visibility.
Can GPS speedometer help with RV fuel efficiency tracking?
Yes! GPS speedometer includes trip recording that tracks distance, duration, and average speed. You can use this data alongside fuel receipts to calculate precise MPG for your RV. Track how different speeds affect fuel consumption on long trips.
What's the best GPS speedometer app for RVs?
GPS Speedometer MPH Tracker is ideal for RVs with 5.8M+ downloads and 10+ years of reliability. Features include offline tracking, HUD display for windshields, large easy-to-read numbers, trip recording, and speed limit alerts. Works perfectly for motorhomes, travel trailers, and fifth wheels.
Ready to Track Your Real RV Speed?
Join 5.8 million users who trust GPS Speedometer MPH Tracker
Free Download β’ No Ads β’ Works Offline β’ Since 2014