Important info regarding tyres for your VW
To anyone wanting to fit wide tyres on to the front of their type1 VWs it's worth noting that i have been running 185/65R15s on my 1303 for 4 years and must admit that there is no advantage on going that wide up front. I think the 175/65R15s (608.5mm) which come on the honda city are more than enough for the front of a beetle in size, handling & braking. This is particularly a good size for regular beetles (with beam suspension). I've seen more and more people fitting sizes over 185/65R15 (621.5mm) as well and that is sheer stupidity as it'll kill the front suspension and the steering box and offer NO advantages over a fresh set of 175/65R15s.
HOWEVER, you can go up to 195/65R15 (634.5mm) on the rear which will help put the power down (for those running dual port 1600s) and will also provide a good final drive ratio (for those running low ratio gearboxes). Ideally though, you should only go to 195/65R15 on the rear if you have and IRS setup, for swing axles i'd suggest nothing more than 185/65R15s (621.5mm).
If you are on a budget 175/65R15s (608.5mm) are as close as you're going to get to value for money & stock size (which is 165/80R15) in our extremely limited market without destroying your type1 VW.