Booster mode is not very functional because of the 50 lb minimum weight limit and the short belt guides.often requires the angle adjuster to avoid taking up a large amount of front to back space.Allows for tethering rear facing (if the vehicle allows it).High rear facing weight limit (R120 and RXT).Low profile makes it great for 3-across situations.To prevent the seat from becoming a projectile in a crash, the Radian can be secured with lower anchors and/or top tether when used in booster mode. Note: children will be about to outgrow the seat by virtue of the ears exceeding the head rest when this happens.
These versions of the Radian should not be considered useable in booster mode unless the occupant is tall enough to otherwise achieve a good shoulder belt fit. While it positions the lap belt correctly, it completely fails to fit the shoulder belt correctly. The Radian R100 and R120 did not achieve the same rating in booster mode, due to the different shoulder belt guide. Received an IIHS Best Bet rating for 2013. The Radian RXT did provide an excellent seat belt fit: positioning the lap belt low on the hips, touching the tops of the thighs, and the shoulder belt even across the torso. We know that big kids need boosters until age 10-12, so the Radian definitely will not be the last seat that he needs. Our 7 year old tester is only about an inch before his shoulders bump up against the headwings, at which point he will no longer be comfortable in the seat. The RXT booster limits are 50-120 pounds, however, the child must also have their ears contained within the top of the shell. The Radian also has a booster function, with some limitations. Expiration: 8 years harness, 10 years boosterĭiono Radian RXT- 7 years old, 52 pounds, 50 inches in booster mode Booster Mode.Highest harness position: 17.5″ (Diono allows use of the seat until ears are over the shell).High back booster height range: less than 57 inches tall.High back booster weight range: 50-120 pounds.Forward facing height range: less than 57 inches tall.Seats made after September 2017 have a 65 pound weight limit.) Forward facing weight range: 20-65 pounds (Note: versions of this seat manufactured prior to September 2017 had a different maximum weight limit.Rear facing height range: less than 44 inches tall.This seat was subject to a recall in late 2017. The Diono Radian is a popular choice among convertible car seats, and for good reason it has great extended rear facing capabilities and the narrow, low profile makes it an excellent solution for 3-across or tight spaces. Our review of the 2018 radian looks at a more recent version of the seat. The seats mentioned in this article are all discontinued.