So long as we're still talking about the Goodyear RS-A....
WagonMan made some pretty important points about hydroplaning, and I'd like to expand on them with some comparisons from my tire experiences.
Dunlop GT Qualifier S: (94 Ranger 225/70-14 1999-2002) Solid tire with
long treadwear (60k+ miles!) and low noise. A very good all-weather tire that handled all conditions adaquately.
Dunlop Radial Rover A/T: (94 Ranger 225/70-14 2002-2004) A good inclement weather tire, but loud and
fast treadwear.
Firestone Indy500: (94 Ranger 225/70-14 2004-? [veh. sold 2006]) Improved wet handling compared to Qualifiers, but had a tendency to drift. Treadwear similar to Qualifiers.
Goodyear RS-A: (07 3 205/50-17) My Tire Rack review: (overall score 4.7)
For dry weather, these tires are excellent with a "riding on rails" feeling--very responsive with great handling. In wet weather, traction and handling diminished more than expected, and even small amounts of running or standing water on the road were enough to loosen their grip noticeably. Given the amount of snow we've received this winter season, I can honestly say these tires are practically worthless when snow is on the roadway! They lose grip under anything more than the barest amount of acceleration (from dead-stop) and offer only a tenuous grip in straight-line driving. [I plan on replacing with dedicated winter tires for next winter and having another set of wheels/tires for summer driving.]
As far as my tire purchases are concerned, I tend to look at tread pattern first. After looking at the above patterns, I think it's pretty obvious why the RS-A falls flat in bad weather--there are sizable "dead ends" in the tread blocks opening toward the center of the contact patch. Instead of liquid passing to the other side and out of the contact patch, it's trapped and traction is reduced.
You'd also need to consider the types of roads being driven on. New concrete is preferable to old asphalt. Around where I live, there's
lots more old asphalt than anything else, and shrinking budgets and heavy traffic have left their mark (quite literally!) As such, even a light-but-prolonged rain will leave standing water everywhere thanks to all the ruts pressed into the road surface...
Based on what others have said in response to my tire questions, my starting points for replacement specifically for the 3 in my area would be a dedicated snow tire, and another tire with a tread pattern similar to the Kumho ASX or the Kumho MX
Given past experience and what I've already said about tread patterns, either of these (or similar) should handle less-than-perfect weather quite well, comparatively...