Whats the largest tire I can put on a draco?
I know they are stock 195/60/r15
Can I go 205/55/15? Or better?

205/50/15 - shorter than stock size, the size I'm going to use on Virgo wheels
205/55/15 - about the stock diameter, a good size
205/60/15 - taller than stock, softer ride, good for a wagon

You could use a 215, but I probably wouldn't unless the tire has a stiff sidewall (high speed rating, usually). My dad uses 215's on 14x6 wheels, and he drives faster and harder than anyone I've ever seen, so I think it's safe. 225 is too wide unless it's a racing tire which would have a very stiff sidewall.
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Volvo 240 Links

Largest width-wise or height-wise?

215's aren't suggested for 6" wheels, but I've fitted 205/70/15's and had no rubbing issues at all. Better gas milage being that they're over 8% larger than stock.

-- Kane ... but handling was a whole other issue!
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Blossom II - '91 745Ti/M46 ... Bubbles - '74 144GL/BW35 ... Buttercup II - ???

You can definitely go 205/55. I wouldn't go any more aggressive than that, but you could.

Roguls
New York, USA

right now i have 205/55-15 on mine and they look ok ... look a little to small for my liking on stock car height so i need to drop mine in the front a bit ...
i wasplaning on going 215/65(or 60)-15s for my rear to give it a little traction and cause i just love the look of rear tires that are a little wider