Have a look here > http://tw200forum.com/index.php?/topic/266-atv-tires-everything-you-need-to-know/
Fronts have been discussed at length also, it's all here some where.
I have an 87 Trailway, and needless to say I need new tires. Since its old it has the older style tires. Im not to impressed with the stock Bridgestones they sell now. I have seen threads here about duros and other tires, I was wondering if we could compile all the options there are for the tw tires. Including size (measurements), where we can purchase them, and price. Front and Backs. I would appreciate it. Thanks