If you want to save weight (If that's what you meant?) and increase grip, you can cut the marked knobbles off. Did it to mine, shit is pure win. Super grippy now, and sheds mud really nicely too. With the Try-All front, Ali's cut his so that it was like this - it also appears to be all good. So yeah, do that if you want to save weight and make your tyres even grippier. Regarding clearance, it's kinda weird but it's almost like the Montys have the extra width lower down the tyre, so they have a wider base for the tread to sit on (making it more stable and better bounce wise too), so the extra width isn't really noticeable at the top, where you're going to have less clearance - if that makes sense. So yeah, if you can fit a 2.5" alright then you can fit the Eagle Claw.