I have used the mitas E09 rears for some time now and for me they are a fantastic.Cheapish, long lasting (approximately 4-5 months out of the rear) and for the mixed riding I do they fit the bill. But lately I have read good reviews of the mitas E12 rally , so I couldn't help myself and ordered one, at present they only come in 140 80 18 and I'm not sure if they plan on adding more sizes.First impressions are wow the weight difference is huge in comparison to the E09 and the tyre is mighty chunky too,I'm also aware that it's a softer compound so I'm not expecting any huge amount of miles on this tyre . For my style of riding the E09 Dakar has always fitted the bill and always will, and this is a different type of tyre , I just wanted to give it a try and see for myself.