What Is The Diono Radian RXT Rear Facing Height Limit?

Choosing the right car seat can be difficult because there are too many options available. Therefore, the chances of buying the wrong one are pretty high if you do not know what you need to look for in a car seat. In this article, we will be discussing one of the best infant car seats in the market today, as well as the important FAQs that you should learn.

Source: flickr.com

The brand Diono is famous for its high quality and affordable baby essentials such as the Radian RXT. The infant car seat has received positive feedbacks from verified customers online, and it is touted as a reliable car seat, especially during accidents and crashes. 

Things You Should Know About The Diono Radian RXT

Convertible car seats are fast selling these days because of their versatility and functionality. One good example is the Diono Radian RXT, a rear-facing car seat with a narrow design. It is a favorite when it comes to car seats because it offers so much without breaking your budget.

Design and Materials

It is imperative to consider the car seat’s size, especially if you own a vehicle with limited space. Fortunately, the Diono Radian RTX has a thin design and fits most mid-sized cars. It also comes with a steel alloy frame, Adjustable head support, Latch indicator, and Aluminum reinforced side-head protection with EPS foam.


The convertible car seat can hold 5 lb up to 120 lb and. Hence, it has a 10-year expiration date, and it grows with your child. It can be used for a long time or until your child is ready for a booster seat. Moreover, it offers a 12-position headrest, a rear-facing harness, and an adjustable five harness slot position to keep your child secure and comfortable while on the road. The Diono Radian also folds flat, which makes it highly portable for storage or travel.

Source: flickr.com

Straps and adjustments

During the newborn stage, you can use the infant insert that comes with the Radian RXT to provide extra protection to your child. Once the infant reaches at least five pounds, you can start adjusting the harness along with the insert snuggly to keep the baby in a rear-facing position when traveling. 

To accommodate your growing child when they are at preschool age, you can remove the insert to add an extra 12.5 inches space and reduce the car seat’s weight limit when converted to forward-facing. 

When your child is 6 to seven years of age, or when they are ready to sit without assistance, you can finally convert the Radian RXT to booster mode. You can use it with a regular seatbelt, and it will still provide the same amount of protection.

Height and Weight Limits

You can convert the Diono Radian into three modes. From rear-facing to forward-facing and a booster seat. However, there are height and weight limits for each mode. Rear Facing is recommended for infants 5 lb – 45 lb or 44 inches tall. When they are at least 22 lb, they can transition to forward-facing until they reach 65 lb or 57″ in height. Finally, when they weigh up to 50 lb t 120 lb or 57″, they can start with the booster mode.

Safety Features

The Radian RXT has exceeded the safety minimum requirement by the Federal safety guidelines. Hence, you are sure that your baby is getting protection from crashes and sudden breaks. It is also good to know that it was voted as one of the safest car seats based on verified customers’ online polls. 


It may cost slightly higher than regular car seats, but given its extended expiration date and top-notch basic and safety features, you get more than what you pay for with the Radian RXT. 

Source: flickr.com

What Are The Downsides Of The Diono Radian?

All car seats have pros and cons, and it is good to know both before deciding on anything. Here is the list of the disadvantages of the Radian RXT.

  • It is heavy and can be difficult to carry when traveling.
  • There will be challenges when installing the car seat in some vehicles with complicated features.
  • Latch weight limits are low.
  • The hardness adjuster takes getting used to as it takes a few steps to adjust fully.

Frequently Asked Questions About The Diono Radian RXT

Does the Diono Radian RXT recline?

Yes, it can recline. However, you must consider the vehicle’s size because it does eat space when at an infant recline angle. There is a tendency that the infant may not have enough leg room if the vehicle is small. 

Source: flickr.com

What is the difference between Diono Radian RXT and 3 RXT?

The main differences between the Diono Radian RXT and 3RXT are the rear-facing capacity, side-impact protection, and adjustable headrest. The 3RXT can hold up to 50 lb on rear-facing and can be used for much longer. It also has better headrest adjustability and provides more protection from crashes and sudden breaks.

When can you use the Diono angle adjuster?

The angle adjuster is only applicable to Diono car seats that are multimode.

Are Diono car seats good?

Yes. Diono car seats are top-rated for their safety features and innovative design. Most of their car seats are reasonably priced and easy on the budget.

Is Diono a good brand?

Yes. It produces many top-selling baby essentials and accessories.

Is Diono Radian comfortable?

According to verified customers on Amazon, it has high-quality fabric and paddings that keeps the baby fuss-free while on the road.

What is the difference between Diono car seats?

The car seats come in different sizes, prices, and features. Some Diono car seats can only be used only as rear-facing or rear-facing and forward-facing, while others can be used in three modes like the Diono Radian. 

Source: flickr.com

Does Diono Radian convert booster?

Yes. As discussed in the article, when the child is 50 lb up to 120 lb, they can opt for the booster mode to sit comfortably throughout the ride. 

How long is a Diono Radian RXT good for?

The Diono Radian RXT expires in 10 years. You can use it on harness mode for up to 8 years and into a booster mode of up to 10 years.

Last Updated on June 2, 2021 by Marie Miguel

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