DOOMER--- For you, I would highly recommend tire size: P265/70R16. This specific size tire has an O.D. of 30.0" and weighs about only 44 lbs each (in the "P" series). You mentioned you didn't want to alter the speedo reading, so this size would be perfect as it's very close to the OEM diameter (O.D.). This specific size tire is available in both the Nitto Terra-Grappler (with tread depth of 13.1/32nds) & General Grabber AT2 (with tread depth of 17/32nds).
Please note that the General Grabber AT2 is both M+S and Snowflake/Mountain rated, plus it is already "pre-pinned" for studs (if desired). The Nitto Terra Grappler is only M+S rated (not Snowflake & no studs). In addition, the General Grabber AT2 has a whooping 17/32nds tread depth, which is unheard of in an A/T tire!!! Tread depths this deep are normally only found on M/T tires (not A/T).
When shopping for tires, try to stay clear of LT-series tires, as they are just way too damn heavy for the sporty VX. Rather, focus your search on P-series (aka: P-Metric) tires as they are normally 10 lbs less per tire than their heavy LT twin. Using P-series tires on the VX will greatly reduce "unsprung weight", and help maintain proper OEM launch, stopping, and MPG of the VX. Sweeeeet!!!