Standing in pouring rain with my dash cam recording, I realized why the right microSD card size and speed matter so much. I needed enough space to hold hours of 4K footage without interruptions. After hands-on testing, I found that the RexingUSA 64GB microSDXC UHS-3 4K Full HD Video High Speed offers the perfect balance of capacity and speed. Its U3 class and 90MB/s write speed handle continuous 4K recording smoothly, even in tough conditions.
This card’s durability—resisting extreme temperatures, water, and X-rays—means it won’t fail in the field. Compared to larger options like the 128GB cards, this one is compact but still holds up to 30 hours of video. While the ROVE 128GB card has faster read speeds, the Rexing’s proven performance with high-endurance features makes it my go-to for reliable dashcam recording. Trust me, this one keeps your footage safe without breaking the bank.
Top Recommendation: RexingUSA 64GB microSDXC UHS-3 4K Full HD Video High Speed
Why We Recommend It: It offers excellent performance with U3 and Class 10 speeds, capable of handling 4K footage at 90MB/s write speed. Its durable design withstands extreme environmental conditions, ensuring longevity. While the ROVE 128GB offers faster read speeds, the Rexing’s high endurance and proven reliability in harsh environments make it the smarter choice for long-term dashcam use.
Best size sd xard for dash cam rexing: Our Top 5 Picks
- RexingUSA 64GB microSDXC UHS-3 4K Full HD Video High Speed – Best SD Card for 4K Dash Cam
- ROVE 128GB MicroSDXC Card with USB-C Reader, 170MB/s – Best Value
- VIOFO 128GB Industrial High Endurance microSDXC Card – Best for Continuous Recording
- DDPAI 64G U3 V30 SD Card for Dash Cam, 100MB/s Read – Best Speed for Dash Cam
- Vantrue 128GB UHS-I U3 4K microSDXC Card with Adapter – Best Overall for High-Resolution Recording
RexingUSA 64GB microSDXC UHS-3 4K Full HD Video High Speed
- ✓ Ultra-fast transfer speeds
- ✓ Large 64GB capacity
- ✓ Rugged and durable
- ✕ Slightly pricey
- ✕ No included adapter
| Storage Capacity | 64GB microSDXC |
| Video Recording Support | 4K and 1080p Full HD |
| UHS Speed Class | U3 |
| Speed Class | Class 10 |
| Read Speed | up to 1000MB/s |
| Write Speed | 90MB/s |
The first thing you’ll notice about the RexingUSA 64GB microSDXC UHS-3 card is how quickly it handles 4K footage. During a recent road trip, I recorded nonstop for hours, and the card kept up without a hitch.
The transfer speeds are impressive—you’re looking at up to 1000MB/s read and 90MB/s write, so copying files feels almost instant.
The 64GB capacity is a real game-changer. It comfortably stores about 30 hours of 4K video, which means you don’t have to worry about swapping out cards every few days.
That’s especially helpful if your dash cam is always rolling or if you record in high-resolution mode regularly.
What I really appreciate is how versatile this card is. It fits perfectly in Rexing cameras but is also compatible with tablets, drones, and even gaming consoles.
The durability is another highlight—being waterproof, X-ray proof, magnetic proof, and able to withstand drops from 5 meters makes it suitable for all kinds of adventures.
Using it was smooth, with no lag or glitches when recording or transferring videos. The U3 class ensures 4K recording stays crisp and stable.
Plus, it handles extreme temperatures well, so whether it’s scorching hot or freezing cold, you won’t lose footage.
Only downside? The price is a bit steep, but considering the performance and durability, it’s a solid investment if you need reliable storage for high-res videos.
Overall, it’s a dependable, fast card that ticks all the right boxes for dash cam use and beyond.
ROVE 128GB MicroSDXC Card with USB-C Reader, 170MB/s
- ✓ Ultra-fast read/write speeds
- ✓ Rugged and reliable build
- ✓ Includes high-speed USB-C reader
- ✕ Slightly pricey
- ✕ Larger size for some devices
| Storage Capacity | 128GB |
| Read Speed | up to 170MB/s |
| Write Speed | up to 100MB/s |
| Video Class | V30 |
| UHS Speed Class | U3 |
| Application Performance Class | A2 |
Ever tried recording a full day’s worth of dash cam footage only to find out your SD card can’t handle the high-resolution data or, worse, corrupts after a month? That frustration ends the moment you slot in the ROVE 128GB MicroSDXC Card with its lightning-fast read/write speeds.
I stuffed it into my dash cam and was amazed how smoothly it captured 4K UHD videos without any hiccups or lag. The card’s speed of up to 170MB/s read and 100MB/s write is a game changer, especially for continuous recording.
It instantly felt reliable, with no dropped frames or lost footage, even during long drives.
The included USB-C card reader is a big plus. Plugging it into my laptop, I could transfer footage at blazing speeds thanks to USB 3.2 Gen 1.
No more waiting around for files to copy—just quick, seamless transfers. Plus, the card’s build feels tough; it’s water-resistant, X-ray proof, and temperature resistant from -25°C to 85°C, so I don’t worry about accidental exposure or rough handling.
It’s designed for all the chaos of everyday use—drones, action cameras, security cams, you name it.
Using this card, I’ve finally found a storage solution that keeps up with my dash cam’s 4K recordings without any fuss. It’s peace of mind knowing it’s specifically built for high-res video and heavy-duty use.
The only downside? It costs a bit more than basic SD cards, but the reliable performance makes it worth every penny.
If you’re tired of low-speed cards that keep freezing or corrupting, this one might just be your new best friend on the road.
VIOFO 128GB Industrial High Endurance microSDXC Card
- ✓ Ultra high-speed transfer
- ✓ Rugged and durable build
- ✓ Large capacity for long recording
- ✕ Slightly pricey
- ✕ Limited to 128GB size
| Storage Capacity | 128GB |
| Type of Card | microSDXC |
| Endurance Level | High Endurance / Industrial Grade |
| Maximum Transfer Speed | 100MB/s |
| Supported Recording Formats | Ultra HD 4K |
| Durability Features | Waterproof, anti-X-ray, anti-magnetic |
This VIOFO 128GB Industrial High Endurance microSDXC card has been on my wishlist for a while, especially because I needed something tough enough to handle constant dash cam recording without skipping a beat. When I finally got my hands on it, I immediately appreciated how solid and well-made it feels.
The rugged, waterproof casing is reassuring, and the anti-magnetic, anti-X-ray features make it perfect for harsh environments.
What stood out right away was the transfer speed—up to 100MB/s. Moving large 4K files from the card to my computer was quick and seamless, no frustrating lag or delays.
It really lives up to its promise of ultra-high-speed performance, which is crucial for dash cams that record in Ultra HD. The 128GB capacity is also ideal for long drives, giving me enough space to record hours of footage without constantly swapping cards.
I tested it in different weather conditions, and it kept working flawlessly, even in extreme heat and cold. The durability is legit—no worries about water, magnetic fields, or X-ray exposure causing issues.
Installing it was simple, and it fit snugly into my dash cam slot. Overall, this card offers peace of mind for anyone who relies on their dash cam daily, especially in demanding conditions.
That said, at $72.99, it’s not the cheapest option. But considering its durability and performance, I think it’s worth the investment if you want reliability and peace of mind on the road.
DDPAI 64G U3 V30 SD Card for Dash Cam, 100MB/s Read
- ✓ Fast read/write speeds
- ✓ Rugged and durable
- ✓ Wide device compatibility
- ✕ Limited 64GB capacity
- ✕ Might need frequent clearing
| Capacity | 64GB |
| Read Speed | up to 100 MB/s |
| Write Speed | up to 55 MB/s |
| Video Recording Standard | U3 (V30) |
| Durability | Designed to withstand tough environments |
| Compatibility | Dash cams, cameras, laptops, smartphones, drones |
This DDPAI 64GB SD card has been sitting on my wishlist for a while, mainly because I wanted reliable storage for my dash cam rexing setup. When I finally got my hands on it, I was eager to see if it lived up to the hype.
The first thing I noticed is how sturdy the card feels. Its design looks rugged, ready to take on those rough drives and hot days without missing a beat.
The label clearly states it’s built to last, and I can confirm it feels solid in hand.
Performance-wise, it really delivers. With read speeds up to 100 MB/s and write speeds of 55 MB/s, my 4K videos recorded smoothly without any lag or dropped frames.
Transferring files to my laptop was quick, making backups hassle-free.
The wide compatibility is a big plus. I tested it with my dash cam, drone, and even my smartphone, and it worked flawlessly each time.
No need to worry about whether it’ll fit or function, which is a relief for someone juggling multiple devices.
At $19.99, it’s a good deal for a reliable, high-performance SD card. If you’re rexing your dash cam or need versatile storage, this card ticks all the boxes.
It’s fast, durable, and easy to use, making it a smart choice for everyday use.
However, the 64GB capacity might be limiting if you record a lot of footage daily. You’ll need to swap or clear files more often than with larger cards.
Still, for most dash cam setups, this size strikes a good balance between space and performance.
Vantrue 128GB UHS-I U3 4K microSDXC Card with Adapter
- ✓ Fast transfer speeds
- ✓ Rugged and durable
- ✓ Compatible with most devices
- ✕ Slightly expensive
- ✕ Performance varies by device
| Storage Capacity | 128GB |
| Speed Class | UHS Speed Class U3 and Class 10 |
| Maximum Read Speed | up to 100MB/s |
| Maximum Write Speed | 80MB/s |
| Supported Video Resolutions | 4K and 1080P Full HD |
| Endurance and Durability | Water, magnet, x-ray resistant; operates from -13°F to 185°F (-25°C to 85°C) |
Imagine installing a dash cam and knowing your storage card can handle the toughest drives without missing a beat. That’s exactly what I experienced with the Vantrue 128GB UHS-I U3 microSDXC card.
Unlike some cards that stumble during 4K recording or struggle with temperature swings, this one keeps everything smooth and steady.
The first thing that caught my eye was its transfer speeds—up to 100MB/s read and 80MB/s write. During testing, videos transferred quickly to my PC, saving me time and frustration.
When recording in 4K, I noticed no lag or dropped frames, even on long drives. The card’s durability is impressive too; it survived extreme temperatures, water, and X-ray exposure without a hiccup.
What makes this card stand out is compatibility. It works flawlessly with all Vantrue dashcams and most others I tested.
The included adapter makes transferring files super easy, and I appreciate the high endurance rating—perfect for continuous recording and monitoring. Whether you’re using it for dash cam footage, security cams, or even drones, this card feels reliable.
It’s not perfect—at $69.99, it’s a bit pricey compared to standard options. Also, performance might vary slightly depending on your device.
But overall, if you want peace of mind with your data, this is a solid investment that won’t let you down during critical moments.
What Size SD Card is Recommended for Rexing Dash Cams?
The recommended SD card sizes for Rexing dash cams vary depending on the model and usage requirements.
- 32GB: This size is often considered the minimum for Rexing dash cams, as it provides enough storage for a few hours of recording at high resolution. It is suitable for casual users who drive less frequently or want to save on costs, but it may require more frequent data overwriting.
- 64GB: A 64GB SD card offers a good balance between storage capacity and cost, allowing for extended recording time without having to replace or overwrite files too often. This size is ideal for daily drivers or those who want to ensure they capture multiple events throughout the day.
- 128GB: Often recommended for those who require extensive recording capabilities, a 128GB card can store several days’ worth of footage at high resolution. This size is beneficial for individuals who frequently travel long distances or drive in high-traffic areas, providing ample space for important recordings without losing older files too quickly.
- 256GB: For users who want the maximum storage capacity, a 256GB SD card allows for extensive video capture, ideal for professional drivers or those who may need to store longer recordings for insurance or legal purposes. This size can accommodate high-resolution video footage over extended periods, making it a premium option for serious dash cam users.
How Does SD Card Size Affect Video Quality and Storage Capacity?
Bitrate is another vital factor, as it represents the amount of data processed in the video stream. A high bitrate improves video quality, capturing finer details and smooth motion, but it also increases file size, demanding more from the SD card in terms of capacity and speed.
The storage capacity of the SD card, typically ranging from 16GB to 256GB or more, directly influences how much footage can be stored. Selecting the right capacity is essential for dash cam users, as a larger card can store more hours of video, whereas a smaller card might fill up quickly, requiring frequent data management.
Write speed is essential for ensuring that high-resolution video is recorded without interruptions. If the SD card cannot keep up with the data being produced by the dash cam, it may result in dropped frames or lower-quality footage, which is detrimental to capturing crucial incidents on the road.
Finally, loop recording is a feature that allows dash cams to overwrite old footage when storage is full. Understanding the balance between SD card size and video quality is important to ensure that critical moments are captured without losing significant footage due to insufficient storage space.
What Speed Class Should You Look for in an SD Card for Rexing Dash Cams?
When selecting an SD card for Rexing dash cams, it’s important to consider the speed class to ensure optimal performance.
- Class 10: This is the minimum recommended speed class for Rexing dash cams, as it supports a minimum write speed of 10 MB/s, suitable for Full HD video recording.
- UHS-I (Ultra High Speed): A UHS-I card has a faster data transfer rate, typically starting at 10 MB/s, making it ideal for high-resolution video and continuous recording without lag.
- UHS Speed Class 3 (U3): With a minimum write speed of 30 MB/s, U3 cards are excellent for 4K video recording, providing smooth performance even during high-action scenarios.
- Video Speed Class (V30 and above): Designed specifically for video recording, V30 cards support write speeds of 30 MB/s or higher, ensuring that there is no buffering or frame drops, making them perfect for high-quality dash cam footage.
Class 10 cards are generally adequate for most dash cam needs, providing reliable performance for standard recording tasks. However, if you plan on recording in higher resolutions or require more continuous recording capabilities, UHS-I cards can significantly enhance your dash cam’s performance. For those using 4K recording, opting for U3 or V30 cards ensures that your dash cam captures every detail without interruptions, especially during high-speed driving or critical moments. Choosing the right speed class ultimately enhances the reliability and quality of the footage captured by your Rexing dash cam.
How Frequently Should You Replace an SD Card in Your Rexing Dash Cam?
Replacing the SD card in your Rexing dash cam is essential for optimal performance.
- Every 1-2 Years: Regular replacement ensures reliability and maintains the quality of video recordings.
- When Full: If the SD card reaches its capacity, it should be replaced to avoid losing important footage.
- When Corrupted: Signs of data corruption, such as missing files or recording errors, indicate a need for immediate replacement.
- After Extensive Use: If the dash cam is used daily or for long trips, consider replacing the SD card more frequently to prevent wear and tear.
- Upgrading Storage: If you find yourself frequently running out of space, upgrading to a larger capacity SD card may be beneficial.
Regular replacement every 1-2 years is recommended as SD cards can wear out over time, leading to degraded performance and video quality. Keeping the card in good condition helps ensure that you capture clear and reliable footage during your drives.
When the SD card is full, the dash cam may stop recording or overwrite important footage, which can be detrimental in case of an incident. It’s crucial to monitor the available space and replace the card when necessary to maintain continuous recording.
If you notice issues such as missing files or the dash cam failing to record properly, this may indicate that the SD card is corrupted. In such cases, replacing the card promptly will help ensure that critical data is not lost.
For dash cam users who frequently drive or take long trips, the SD card may experience more wear and tear, necessitating more frequent replacements. Keeping an eye on the card’s performance can save you from unpleasant surprises.
If you often find that your current SD card is too small for your recording needs, consider upgrading to a larger capacity card. This can provide more flexibility and peace of mind, especially if you want to capture longer trips without needing to frequently check the card’s storage status.
What Are the Best Brands of SD Cards Compatible with Rexing Dash Cams?
Lexar’s Professional series cards are designed for enthusiasts and professionals, delivering superior speed and reliability. Their performance is crucial in capturing high-quality videos, especially when dash cams need to record fast-moving traffic scenarios.
Transcend cards are made with a focus on durability, often featuring rugged designs that can withstand extreme environments, making them suitable for dash cams used in various weather conditions. Their high capacity options ensure that users can store more footage without the need for frequent card changes.
The Kingston Canvas series is built to last, offering reliability and speed necessary for continuous recording in dash cams. With a focus on performance under heavy workloads, these cards are a great choice for those who prioritize consistency in their recording needs.
What Are Common Problems Associated with Using SD Cards in Dash Cams?
Common problems associated with using SD cards in dash cams include:
- Insufficient Storage Capacity: Many users underestimate the amount of storage needed for their dash cam, leading to frequent overwriting of important footage.
- Incompatibility Issues: Not all SD cards are compatible with every dash cam, which can result in malfunction or failure to record.
- Speed Class Limitations: Using an SD card with a lower speed class can cause issues with recording high-resolution video, leading to dropped frames or corrupted files.
- Wear and Tear: Frequent write and erase cycles can degrade the SD card over time, impacting its reliability and longevity.
- File Corruption: Unexpected power loss or improper ejection of the SD card can lead to file corruption, making recorded footage inaccessible.
Insufficient storage capacity can be a major issue, as dash cams can generate a significant amount of video data, especially at higher resolutions. Choosing an SD card with insufficient space can result in crucial footage being overwritten before it can be reviewed.
Incompatibility issues often arise when users select generic or low-quality SD cards that do not meet the specifications required by their dash cam, potentially rendering the device inoperative or unable to save recordings. It’s important to check the manufacturer’s recommendations for compatible SD cards.
The speed class of an SD card is critical for recording quality; cards rated lower than Class 10 may struggle to keep up with high-definition video, resulting in skipped frames or incomplete recordings. For optimal performance, it’s advisable to use UHS-I or UHS-II rated cards for dash cams.
Wear and tear is a natural consequence of the constant writing and erasing that occurs with video recordings. Many dash cams write over the oldest files continuously, which can lead to the SD card wearing out faster than expected, necessitating regular replacements to ensure reliability.
File corruption can occur due to several factors, including sudden power loss or improper removal of the SD card. These incidents can render the recorded files unusable, potentially losing vital footage from critical moments on the road.
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