Other than physically measuring one (which i can't do until I get a replacement locking wheel nut adapter - see my other post!), is there any other way to figure out what size front brake discs I need for ac 2007 (07) 1.9 Altea XL?! Looking on parts sites, there's 280, 288 or 312! It's not 312, but no idea if it's 280 or 288, and then I need the To find the accompanying pads too. Cheers for any advice!