BritishV8 Forum

From the TireRack website:
"As a general rule, tires should not be mixed on any vehicle unless specified as acceptable by the tire or vehicle manufacturer. Drivers should avoid mixing tires with different tread patterns, internal constructions or sizes, and use identical tires on all of their vehicle's wheel positions in order to maintain the best control and stability. Additionally, drivers should never mix winter tires with all-season/summer tires, or mix run-flat tires with non-run-flat tires"

Not usually recommended. In this case, though, you are talking about two similar tires in the same category. I don't see it being any worse than running staggered tire sizes. Not sure I would do it since both sizes you need are available in the G-Force Rival. We don't really know for sure that the RS3 is any stickier. Just go with the G-Force on all four corners.

Rob, did Santa bring any new tires for your red sleigh?