I've browsed the forum but have only just joined now. There's a lot of helpful insight but I figured I would post about my own horse and read your opinions.
She's a Shire x Paint and only just turned 3 years old on August 20th. I've had her since she was 8 months old. When she initially came to me, she was only about 12.3 hands.
Now, her butt is just under 16 hands while her withers are at 15-15.1. Her sire is a 16.3 Shire and her dam is a 15.2-15.3 Paint. My horse's full brother was 16 hands at 2 years old. I've done the two different string tests and both came out to 16.3. I'm not sure if that would be accurate though considering her height right now at 3 years old. Even the breeder was sort of surprised as to how short she is at this age (I like tall horses since I'm 5'7").
I'm just curious as to what anyone thinks would be a good approximation of her full height one day (I know drafts and draft crosses can grow until they're 7-8 years old).