Wilsons Sandbox

Thanks for the input on tires. Got a couple more questions. What are the opinions of Cheng Shin tires? Used to use them on our dirt bikes, back a few years. Never had experience with their DP tires. Has anyone heard of Maxxis tires? They have an interesting looking DP tire, but I have never heard of them. For the devout Kenda users, I located a supplier that is substantially less expensive for Kenda's than Dennis Kirk. It is www.bobscycle.com The 5.10-17 is about $20.00 less, and the 3.00-21 is about $7.00 less. Just thought I'd share. The correct tire size is 5.10-17 for the rear, and 3.00-21 for the front, isn't it? Or 90/90-21 for the front and 130/80-17 for the rear? Is it safe and functional to go to a 3.25-21 tire on the front, get a little bigger footprint on the front? Just trying to tap the knowledge of the crew in order to make an informed decision. Jim Sherlock