If you weigh over 200 lbs, it might not be realistic to think you can ride 23 or 25 mm tires without giving up reasonable comfort and durability, and especially not if you want to ride on dirt roads. 32 mm minimum would be more like it. Michelin Krylion Carbons are superb tires, but these are training tires that are pretty close to being racing tires. Durable for someone of more moderate weight.