I've become very dogmatic about tires at this point... IMHO the Rip-Saw RT's are the best all-round tires for east coast terrain for the P-500 with the possible exception of sand. They are virtually bullet proof, and will get you home with no air at all in them if you ever managed to puncture one. I have tested this, and other reviewers have said the same. They are heavy- helps with c.o.g. They will grip the sides of ruts like cat claws. They are quiet and smooth on hard pack (roads) and wear like steel. They have unsurpassed lateral traction- keeps machine from sliding sideways in slippery off-camber situations. They track straight, with no 'squirmyness' on the road. I had over 3000 miles on my last set and gave those to a friend because I went from 26's to 27's. Conversely, my new wolverine came with Dirt Comanders. I never knew how bad a tire can be... maybe they're good in mud, don't know, but I promise you they suck everywhere else.... The wolverine is just disappointing in many aspects, but that's a completely different topic, but it now has 28 Rip-Saws... Game changer. The Rip-saws are expensive, but you get what you pay for. They are also very stiff and ride rougher than stock, but if you keep them aired down- I run mine at 4-5 psi on rough trails, sometimes even lower - the ride is ok. With low pressure they tend to run smaller than listed diameter, but on the P-500, that's probably not a bad thing.. There are tires that without question will outperform in the specific terrain they were designed for, but after 8 years of trying to find something better than the Rip-Saws for all-round performance, I keep ending up with the Rip-Saws. I would also recommend, no matter what tire you end up with, is going to the same size on all four corners so you can rotate them- I just did it with the wolverine, wish I had done it with the P-500.