I was thinking of putting 27x10x12 on all four corners of my P650 to get ground clearance and maybe get mud/sport out of her.
Good or Bad idea?
What would you do?

 

Never used 'em myself, but have heard several very good reports on them.
IMO, for fast trail riding you can not beat the Holeshot ATR's. I swear that this tires was designed for a Prairie 650/700 !!!!!!
I think that they will clear OK. I KNOW they'll clear on the "C" series ITP wheel, as they have a 1" POS. offset.

 

I have the 26" Bearclaws and love them. They have great sidewall protection (especially the rear) and do very well in all types of terrain. They are OK in mud, but really shine in trail riding and rocks. When these wear out, I will be getting some more, that is for sure!

 

I had the Claws on a 2000 Yamaha Kodiak Auto 4x4. To each his own but I tell you they got me into more trouble than good. On tricky steep down hill stuff they would slide. They wouldn't bite on steep hard pak very good at all and Bump steer was arm breaking. They are hard riding also and will run flat.
I run ATR's and they are a dream come true [for me]. I found they perform better than claws going up steep sandy creek banks. This was a surprise to me. It's somthing I do often where I ride. They only fail in the deep sloppy stuff.
Then again I will avoid sloppy mud like the plauge. I find looking for a way around it more fun than going through it. I have been an industrial maintenance Tech \ Machiniest since 1971. I just can't see using a fine peice of equipment for mud holeing.

Good Luck.