A much better tire size choice upgrade would be 305/40R22 (31.6" O.D./41 lbs) and mounted on super lightweight wheels like Center-Line's. The "40-series" width will fit much better within the tightly cramped front wheel-wells of the VX. Yes, the website of 1010Tires is correct and too much unsprung weight can greatly degrade braking ability. Here are some numbers to consider:

OEM Stock VX 18" wheel & tire:
18x7 OEM Wheel = 28 lbs each
OEM Tire 245/60R18 = 34 lbs each
Combined Weight Wheel/Tire = 62 lbs

The U.S. Tire Industry recommends to stay within 10 lbs of OEM spec's when upgrading to aftermarket wheels/tires to maintain safe braking distances using OEM brakes. Thus, in the case of the VX a combined total weight of wheel/tire to be no more than 72 lbs max. Granted, when upgrading both to an aftermarket wheel and an aftermarket tire, it will be extremely difficult to adhere to the 72 lbs max limit. Your best bet would be to find the absolute lightest aftermarket wheel you can find. For example:

Center-Line, Tomahawk Series - "Rapid" model wheel, 22x9 (6-5.5) = 37 lbs each
305/40R22 (31.6" O.D.) Tire = 41 lbs each
Combined Weight Wheel/Tire = 78 lbs

I'd say a mere 6 lbs overage per wheel/tire (78 lbs) combo is still within safe tolerances of the recommended max weight target (72 lbs). However, I wouldn't go any heavier. Again, find the lightest possible 22" wheel that meets your liking. Center-Line brand wheels would be my only choice.