Can you fit a 26x10-12 tire onto a stock 25x8-12 rim?

i have a stock polaris rzr and i was wondering if i could fit bigger tires on to a smaller rim and stretch them on? my tire measurements are Front 25x8-12 and Rear 25x10-12 I want to put kenda executioners on them and put same tire size on front and back. the kenda tire size is 26x10-12