Sony K55XR8B VESA pattern and wall-mount specs
The Sony K55XR8B — the 55-inch BRAVIA XR8B — uses a 300 x 300 mm VESA pattern and weighs 37.7 lb (17.1 kg) without its stand, according to Sony's product page. Any wall mount whose range covers 300 x 300 and is rated for at least 37.7 lb will hold it.
Mount checklist for the K55XR8B
- Pattern: 300 mm wide by 300 mm high (11.8 x 11.8 in). On a mount's box, both numbers must sit inside its range — "up to 400 x 400" fits this TV.
- Standard: a square Part F pattern in the VESA MIS standard, which uses M6 or M8 screws.
- Weight: 37.7 lb without the stand. Mounts are rated by maximum load; a mount rated 40 lb or more leaves no doubt, and full-motion arms should have more margin than fixed plates because the load sits further from the wall.
- Screws: use the screw length and any spacers the Sony manual specifies. Too long can damage the panel; too short strips the insert.
- Wall: fix the mount to studs or masonry with the hardware the mount maker supplies for that wall type.
What that means when you shop
300 x 300 mm sits in the middle of the range most "medium to large" mounts cover — check that the mount's largest pattern is at least 300 wide and 300 tall, because some budget mounts stop at 300 x 300. At 37.7 lb it is a two-person lift onto the mount, and well inside the rating of mainstream fixed and tilting mounts; on a full-motion arm, check the rating at full extension.
Closest in weight among other brands' 55-inch TVs: Samsung OLED S95H (35.9 lb, 300 x 200 mm); LG Gallery TV LX7 Mini LED (41 lb, 400 x 300 mm); Samsung The Frame Pro LS03HW (33.1 lb, 200 x 200 mm). None of them shares this TV's pattern — a reminder that size and weight don't predict the holes.
Same mount, different model: Sony's K55XR50 (BRAVIA 5, 2025) also uses 300 x 300 mm and weighs 39 lb; Sony's K55XR80M2 (BRAVIA 8 II, 2025) also uses 300 x 300 mm and weighs 37.9 lb. A mount that suits the K55XR8B suits them too, which is handy if you are choosing between them.
Among Sony's 46 models here, 20 use 300 x 300 mm (51%), the most common Sony pattern. It is a 2025 model still listed by Sony.
Other sizes in the Sony BRAVIA XR8B line
Every size in this line that Sony lists uses 300 x 300 mm, so a mount for one fits the others if its weight rating covers the heaviest (71.2 lb on the 77").
| Model | Size | VESA (mm) | Weight |
|---|---|---|---|
| K55XR8B | 55" | 300 x 300 mm | 37.7 lb |
| K65XR8B | 65" | 300 x 300 mm | 49.2 lb |
| K77XR8B | 77" | 300 x 300 mm | 71.2 lb |
How it compares with other 55-inch TVs
There are 24 other 55-inch models on this site. 300 x 300 mm is the most common pattern at this size (8 of them). At 37.7 lb it is heavier than the 31.5 lb median for the size — heavier than 16 of them.
Across all sizes, 33 other TVs here use 300 x 300 mm, including models from LG, TCL — for example LG OLED77G3PUA (77"), LG OLED77G6WUA (77"), LG OLED77M3YUA (77"), LG 65QNED85BUA (65"). The 300 x 300 page lists them all.
Where to sit
A 55-inch 16:9 screen is 47.9 in wide and 27 in tall. It fills the SMPTE 30° view from 7 ft 5 in and THX's 40° cinema view from 5 ft 6 in. At this size 4K looks sharper than 1080p only from 7 ft 2 in or closer; beyond that, 20/20 eyes cannot tell the two apart. The 55-inch size page has the full table and every model at this size.
Pattern and weight: Sony product page for K55XR8B, checked 2026-10-20; 2025 model. Viewing distances: geometry from the angles cited on the methodology page. Not affiliated with Sony.