Originally Posted by greg74

I don't understand why you need bigger tires if you're riding in the desert. Big tires are for more ground clearance to get through mud and up and over obstacles. Most of time, simply going with a more aggressive tread works well in the same size as stock or maybe slightly larger as sometimes one manufacturer's 27" tire might actually measure out to the same as someone else's 26" tire. Keep the center of gravity lower and have less rotating mass and unsprung weight, as well as less rolling friction as larger tires are usually wider as well. You will definitely lose some performance but to each their own I guess. Not to mention handling and braking. Its obviously a much bigger issue on smaller displacement machines.