Diono Radian 3R vs. Graco Tranzitions 3-in-1 Harness Booster: Which is Better? (2024)

Compare the two car seats side-by-side

Hi there! We're here to help you decide between the Diono Radian 3R and the Graco Tranzitions 3-in-1 Harness Booster.

Our goal is to provide you with the information you need to feel confident that you're choosing the optimal car seat for your family's needs and budget. Let us know if you have any other questions!

At A Glance

Diono Radian 3R Graco Tranzitions 3-in-1 Harness Booster
Type Convertible

Rear-Facing Forward-Facing High Back Booster
Convertible

Forward-Facing High Back Booster Backless Booster
Current price
In stock
$169.99
In stock (1 varieties available)
$83.99 - $83.99
Rating 4.70 4.77

Our Thoughts

As a parent, one of the most significant decisions you can make is which car seat to choose for your child's protection during car rides. Two products that might catch your interest are the Diono Radian 3R and the Graco Tranzitions 3-in-1 Harness Booster. Both boast of robust features and safety measures designed to evolve with your child's growth.

The Diono Radian 3R stands out for its slim profile and steel frame, a vital feature for enhanced safety. One of the main benefits of this car seat is the range of seating options it accommodates: rear-facing, forward-facing, and a high-back booster. Parents have lauded the Radian 3R for its space-saving design, capable of fitting three seats across in most vehicles. However, some parents noted difficulties in moving the car seat due to its weight, and installation in smaller vehicles can pose some challenges. It also lacks head support, which could be a concern in side-impact situations. Despite these drawbacks, the Radian 3R shines in terms of safety and durability, making it an excellent choice for families with multiple children or smaller vehicles.

On the other hand, the Graco Tranzitions 3-in-1's main selling point lies in its adaptability and convenience, transitioning seamlessly from a harness booster to a high-back booster, and finally, a backless booster. Lightweight as opposed to the Radian 3R, the Graco Tranzitions 3-in-1 offers easy transfer between vehicles coupled with easy-to-remove and washable parts for cleaning, increasing its appeal. However, it's worth mentioning that this car seat tends to have installation difficulties, which could frustrate some parents.

If we take a deeper look into certain specifications, we can see significant differences that might sway your decision. Notably, the Diono Radian 3R provides a higher maximum weight limit than the Graco Tranzitions 3-in-1 for both forward-facing (65 pounds compared to 57 pounds) and high-back booster modes (100 pounds compared to 49 pounds). This implies a longer usage period for the former, especially advantageous if your child is on the taller or heavier side, creating a better value for your money. For travel considerations, the Diono Radian 3R is approved for both rear- and forward-facing modes, whereas the Graco Tranztions 3-in-1's approval only covers the forward-facing mode.

Therefore, if your family often travels by car and you are ready to invest in a heavier but long-lasting, three-across car seat, I would recommend going for the Diono Radian 3R. If you frequently switch your car seat between vehicles and value easy cleaning, you could consider the Graco Tranzitions 3-in-1, provided you don't face much issue in its installation.

Key Details

Radian 3R Tranzitions 3-in-1 Harness Booster
Diono Radian 3R Graco Tranzitions 3-in-1 Harness Booster
Brand Diono Graco
Type Convertible

Rear-Facing Forward-Facing High Back Booster
Convertible

Forward-Facing High Back Booster Backless Booster
Weighted Rating 4.70 4.77
1 yr Price Range $155.39 - $199.98 $97.99 - $139.99
Current price
In stock
$169.99
In stock (1 varieties available)
$83.99 - $83.99
Value

Offers a long lifespan and versatile seating options, making it a cost-effective choice over time.

The price point combined with its 3-in-1 versatility offers significant savings over time.

Safety

Features a steel frame for enhanced safety and reliability, scoring high in safety ratings.

It meets Graco's ProtectPlus Engineered safety standards, which is a rigorous test for safety.

Features

Despite its minimalist design, it includes essential features like memory foam padding and a foldable design for travel (converts into a backpack!)

The Simply Safe Adjust Harness System and portable design are standout features.

Installation

Installation experiences vary; some find it straightforward, while others face challenges, especially in smaller vehicles.

Some parents find the installation process difficult and frustrating.

Cleaning

The seat cover is removable for cleaning, but some users report challenges in maintenance and durability.

Easy to remove and washable parts make cleaning a breeze.

Size

Its slim profile is a standout feature, allowing for three-across seating in most cars.

The lightweight and compact design make it convenient for transfers between vehicles.

Review Click here Click here

Comparison of Specifications

While features and reviews provide a sense of real-world use, the specs offer quantifiable details on sizing, limitations, and more. Comparing key measurements and ranges side-by-side is crucial for ensuring you choose a seat properly fitted for your child and vehicle.

We've compiled the weight limits, height limits, dimensions, and other vital statistics for the Diono Radian 3R and the Graco Tranzitions 3-in-1 Harness Booster. This data will confirm whether each seat can accommodate your child's current size and projected growth. Specs like seat depth and width are also important for assessing fit with your car's backseat.

Review the following key measurements for both seats. Pay special attention to the height and weight limits to ensure your child falls within the safe ranges.

Height and Weight Limits

Rear-facing

Diono Radian 3R Graco Tranzitions 3-in-1 Harness Booster
Height Range 0 - 44 inches
Weight Range 5 - 40 pounds

Forward-facing

Diono Radian 3R Graco Tranzitions 3-in-1 Harness Booster
Height Range 0 - 57 inches 27 - 57 inches
Weight Range 20 - 65 pounds 22 - 65 pounds

Booster

Diono Radian 3R Graco Tranzitions 3-in-1 Harness Booster
Height Range 0 - 57 inches 0 - 49 inches
Weight Range 50 - 100 pounds 30 - 100 pounds

Dimensions and Weight

Diono Radian 3R Graco Tranzitions 3-in-1 Harness Booster
Width 17.0 inches 19.0 inches
Height 28.5 inches 26.5 inches
Depth 16.0 inches 17.4 inches
Weight 25.9 pounds 20.0 pounds

Core Specifications

Diono Radian 3R Graco Tranzitions 3-in-1 Harness Booster
Model Year 2018 2018
Made In China China
Frame Material Reinforced Steel Aluminum

Safety and Compliance

Diono Radian 3R Graco Tranzitions 3-in-1 Harness Booster
Federal Safety Standards Meets all standards Meets all standards
Configurations FAA-Approved for Airplanes Forward-Facing
Rear-Facing
High Back Booster
Backless Booster
Forward-Facing
High Back Booster
Backless Booster
NHTSA Ease-of-Use Ratings Rear-Facing Mode
Overall 2 out of 5 stars
Labels 1 out of 5 stars
Instructions 3 out of 5 stars
Securing 2 out of 5 stars
Installation Features 2 out of 5 stars
Forward-Facing Mode
Overall 3 out of 5 stars
Labels 1 out of 5 stars
Instructions 3 out of 5 stars
Securing 3 out of 5 stars
Installation Features 5 out of 5 stars
Booster Mode
Overall 1 out of 5 stars
Labels 1 out of 5 stars
Instructions 4 out of 5 stars
Securing 1 out of 5 stars
Installation Features 1 out of 5 stars
Forward-Facing Mode
Overall 3 out of 5 stars
Labels 2 out of 5 stars
Instructions 4 out of 5 stars
Securing 3 out of 5 stars
Installation Features 3 out of 5 stars
Booster Mode
Overall 4 out of 5 stars
Labels 3 out of 5 stars
Instructions 5 out of 5 stars
Securing 1 out of 5 stars
Installation Features 5 out of 5 stars
Previous Recalls This car seat has never been recalled. This car seat has never been recalled.

Features

Diono Radian 3R Graco Tranzitions 3-in-1 Harness Booster
Attachment Methods LATCH
Seatbelt
LATCH
Seatbelt
Harness Type 5-Point 5-Point
Cup Holders Has cup holders. Has cup holders.

Warranty and Durability

Diono Radian 3R Graco Tranzitions 3-in-1 Harness Booster
Manufacturers Warranty Length 1 year 1 year
Lifespan 10 Years 7 Years

Additional Links

See all Diono car seats See all Graco car seats
Full review of the Diono Radian 3R
Full review of the Graco Tranzitions 3-in-1 Harness Booster