Doesn't really matter too much either way as the MXV4 tires aren't the best or worst for rolling resistance in the market as a whole.wwhitney wrote:"highest possible rolling resistance" = worst? or best?TomT wrote:CR tested LRR tires a while back. The MXV4 got their highest possible rolling resistance rating...
Keep in mind RR changes from tire to tire. You probably look at that and go so what, everything is different from one to another. The thing about tires is hard to put in a single sentence soundbite.
For starters the short version of "mxv4" could be any one of
Energy MXV4 Plus
Energy MXV4 S8
Next the RR varies by "size" so there are 30 or rolling resistance values just for the Primacy MXV4
Look at http://www.tirerack.com/tires/tires.jsp ... imacy+MXV4" onclick="window.open(this.href);return false; and see how on the specs tab only some of the sizes are listed as "Green X". The sizes that don't get the "Green X" designation have even worse rolling resistance than the ones that do but the ones with "Green X" still don't roll as easily as the Energy Saver A/S.
So which type and size of MXV4 did they test? which type and size of MXV4 would you get if you tried to buy a set?
It takes a lot of research and attention to detail to not get misleading information about tires.