I have a 16h3' big heavy horse. I have some Nunn Finer side reins (no elastic or donut) that work well with him. There are lots of holes left even when I have them on very loose. Can't remember what brand draw reins I have.
I feel your pain and am interested to see the responses! I did finally find a cheap pair of side reins that fit my 17.2hh youngster if I put them on the last hole... I would not recommend them, however.
KL Select makes extra long draw reins...not sure if they're the girth strap ones or not. I wish I could find someone who makes extra long side reins with the elastic. My friend and I add double ended snaps to the ends of ours to help make them longer.
Agree with cu@x =) Kl makes nice ones.. i think they used to make tony slater ones as well.. they make 'warm blood' length which are wicked long. I think
tory also makes some, but i think Kl's are the longest ( may also be called red barn) not sure.. Farm house had some a while back on their mobile unit, I'd bet they have them in the store too. 864-457-3557
We are having some DR custom made by our local leather dude-who also owns the feed store too. He made custom ground driving lines for me a few years ago (two sets from thick but supple harness leather for $60.00). I have big horses and stupid young ones too and they have held up beautifully.
I think he told my daughter that DR for my 17.1h BIG TB would be about $35-40.00 any color we wanted and any thickness of leather too.
Just a thought. It's not rocket science to make them and if you go custom then you know they will fit.