Due to a combination of Ebaying under the influence, an inability to read BMW part numbers and general stupidity, I’ve found myself with a spare standard seat (820mm last 3 p/n 318) and a low seat (760mm last p/n 317). What I was actually looking for was a standard R seat (790mm last 3 p/n 316). Both seats are in superb, as new, condition. If anybody would like a swap for either, I would be delighted. Alternatively I’ll sell them for £80 each, inc postage to UK. They're £258 new.