Magazines is Performance VW, or PVW, tescos sell it.
Most people go for Hottuning coilovers, they are only £150, adjustable to 120mm low, but no adjustable dampers so they do give a harsh ride. Mixed reviews really.
As for wheels, bigger than 17 and they wont work at all, most people advise 16's, with 17's and lowered it will scrub.
Standard wheels are 6.5j wide. Although 7.5 is comfortable, depends on what wheel you want really.
Tyre size, profile and make, depends on the width and size of the wheel, which is dependant on what wheels you want. But get it fairly low profile 40 or 45, and a size or 2 narrower than you are meant to, so it has a small stretch, and it will tuck into the arch when you lower it.
If you keep going lower you will need to remove the arch trims, or grind and fold the arches back.
Depends all on what you fancy mate.
