Running 27TPI Surly Nates front and back! They are the same height as Larry and 1/4 inch wider than Larry on Graceful Fat Sheba 80mm rims. Float and traction are an order of magnitude better than the Larry. Through what snow is left in my yard, I couldn't lose traction no matter how hard I tried!

They are quite noisy and send a rumble up your bum on pavement. Might be annoying to some but a perk to others!