Talking about convertible car seats with advanced safety systems, we should mention Diono Rainier 2 AXT (2AXT) and Diono Radian 3 RXT (3RXT) as two choices that we should consider. They are both introduced as 3-in-1 convertible car seat that can be used as rear-facing car seat, forward-facing with harness car seat and booster car seat. Which of them is the one that we should choose? To answer that question, we need to know the similarities and differences between Diono Rainier 2 AXT and Diono Radian 3 RXT. We will talk about that in this article.
Diono Rainier 2 AXT and Radian 3 RXT Similarities
Diono Rainier 2 AXT
As two premium all-in-one convertible car seats from Diono, we can find that there are a number of similarities between Diono Rainier 2 AXT and Radian 3 RXT. What are their similarities? Let’s talk about that together.
1. 3-in-1 convertible car seat
Diono Rainier 2 AXT and Radian 3 RXT are both introduced as 3-in-1 convertible car seats. They can be used in 3 different modes: rear-facing, forward-facing harness and booster. The weight limit for forward-facing harness and booster modes of those two car seats are similar. They both can be used as forward-facing harness for 20-65 lbs toddler and booster car seat for 50-120 lbs child.
2. Steel alloy frame with aluminum reinforced sides
We can find that steel alloy frame and aluminum reinforced sides are integrated in both of Diono Rainier 2 AXT and Radian 3 RXT. Steel Alloy Frame provides strength and durability for the structure of those two car seats, while Aluminum Reinforced sides provides side impact protection. We can also find EPS Energy Absorbing Foam installed in both of Diono Rainier 2 AXT and Diono Radian 3 RXT that provides effective impact energy management while also acts as additional side impact protection.
3. Rear-Facing Tether with Safe Stop energy absorbing harness
Rear-Facing Tether and Safe Stop energy absorbing harness are two additional security features that we can find in both Diono Rainier 2 AXT and Diono Radian 3 RXT. Rear-Facing Tether is the feature that can reduce seat rotation during the crash event especially when the car seat is in rear-facing mode. Safe stop energy absorbing harness is another feature that provides protection during an impact for forward-facing with harness child.
4. 12-Position Adjustable Headrest with Infant body support cushions
To accommodate your growing child, we can find 12-position adjustable headrest in both Diono Rainier 2 AXT and Radian 3 RXT. The head support is also reinforced to provide additional side impact protection especially for head area. We can also find infant body support cushions and memory foam in both of Diono Rainier 2 AXT and Radian 3 RXT. Infant body support cushions and memory foam ensure that your smaller infant is comfortable and secure sitting on those two car seats.
5. SuperLATCH system with Shoulder and lap belt guides
Installing Diono Rainier 2 AXT and Radian 3 RXT is easy while also secure with SuperLatch system that integrated on this car seat. We can also find audible click and visual indicators to make sure that the connectors is properly connected. We can also find shoulder and lap belt guides on those two convertible car seats to help you install them in booster mode.
7. Cup Holder with Machine Washable Seat Pad
To help your child easily access their favorite drink during the ride, both of Diono Rainier 2 AXT and Diono Radian 3 RXT are completed with cup holder. We can also find that both of Diono Rainier 2 AXT and Radian 3 RXT also come with machine washable seat pad that help you to clean those two car seats easily when It gets dirty.
From our discussion about the similarities of Diono Rainier 2 AXT and Diono Radian 3 RXT, we can create the table below to summarize their similarities.
| Diono Rainier 2 AXT | Diono Radian 3 RXT | |
| Brand | Diono | Diono |
| Car Seat Type | Convertible car seat | Convertible car seat |
| Car Seat Mode | 3-in-1 | 3-in-1 |
| Forward-Facing with Harness Weight Limit | 20-65 lbs | 20-65 lbs |
| Booster Weight Limit | 50-120 lbs | 50-120 lbs |
| Steel Alloy Frame | YES | YES |
| Aluminum Reinforced Sides | YES | YES |
| EPS Energy Absorbing Foam | YES | YES |
| Rear-Facing Tether | YES | YES |
| Safe Stop energy absorbing harness | YES | YES |
| Adjustable Headrest | 12-Position | 12-Position |
| Infant body support cushions | YES | YES |
| Memory Foam | YES | YES |
| SuperLATCH system | YES | YES |
| Shoulder and lap belt guides | YES | YES |
| Cup Holder | Included | Included |
| Machine Washable Seat Pad | YES | YES |
Diono Rainier 2 AXT and Radian 3 RXT Differences
Diono Radian 3 RXT
Since they are introduced as two different models, we can easily guess that there are few differences between Diono Rainier 2 AXT and Diono Radian 3 RXT. Do you want to talk more about their differences? Let’s talk about that together.
1. Rear-Facing weight limit
While both Diono Rainier 2 AXT and Radian 3 RXT are able to be used as rear-facing car seat, their weight limit is slightly different. Diono Rainier 2 AXT can be used for 5-50 lbs infant, while Diono Radian 3 RXT can be used for 5-45 lbs infant. We can find that Diono Rainier 2 AXT can be used in rear-facing mode longer than Diono Radian 3 RXT.
2. Extra-deep side walls
We can find that both of Diono Rainier 2 AXT and Radian 3 RXT come with Aluminum reinforced sidewalls. But we can find that Diono Rainier 2 AXT is completed with extra-deep side walls that thicker than the sidewalls of Diono Radian 3 RXT. The Extra-deep side walls of Diono Rainier 2 AXT provides additional layer of side impact protection.
3. Fits-3-Across
Because of its design, we can find that Diono Rainier 2 AXT is not fits-3-across in most mid-size-vehicles. While Diono Radian 3 RXT fits-3-across in most mid-size-vehicles.
4. Price
Diono Rainier 2 AXT is positioned higher than Diono Radian 3 RXT. So We can easily find that Diono Rainier 2 AXT is usually offered at the higher price than Diono Radian 3 RXT. How about their price difference? Since car seat prices often change from time to time, we need to check the price of Diono Rainier 2 AXT and Diono Radian 3 RXT before we can find their latest price difference.
The differences of Diono Rainier 2 AXT and Radian 3 RXT can be summarized with the table below.
| Diono Rainier 2 AXT | Diono Radian 3 RXT | |
| Rear-Facing Weight Limit | 5-50 lbs | 5-45 lbs |
| Extra-Deep Side walls | YES | NO |
| Fit-3-Across | NO | YES |
| Price | Check Price on Walmart.com… | Check Price on Walmart.com… |
Which One Should You Choose?
From our discussion about Diono Rainier 2 AXT and Diono Radian 3 RXT, We can find that Diono Rainier 2 AXT is the model that positioned higher. As the higher model, Diono Rainier 2 AXT comes with higher weight limit for its rear-facing mode, while It’s also completed with deeper side walls. If you are looking for convertible car seat that can be used as rear-facing car seat longer, then Diono Rainier 2 AXT is the one that yo should choose. It’s also the model that you should choose if you are looking for more advanced side impact protection with Extra-deep side walls. Where should you order one? We recommend you to Order Diono Rainier 2 AXT from Walmart.com here…
Diono Radian 3 RXT is the model that you should choose if you looking for convertible car seat that Fits-3-Across. It’s also the model that you should choose if you have more limited budget since it’s usually offered at the lower price than Diono Rainier 2 AXT. We can find that the weight limit difference of Diono Radian 3 RXT and Diono Rainier 2 AXT is not that significant, while We can also find that Diono Radian 3 RXT is already completed with Aluminum reinforces sides and EPS Energy Absorbing Foam that can protect your child from side impact. Where’s recommended place to order one? You should Order Diono Radian 3 RXT from Walmart.com here…