The higher the Tim weight the better. The higher rim weight will allow the disc to spin more in the air. The only downside is the higher rim weighted discs are a lot more expensive.
Your best bet is to just just buy a new tire & rim combo rather then trying to replace the rim only. The amount of work and cost wouldn't be worth it.
The South Rim at Grand Canyon Village is probably the most accessible and visited.
18" would be the best
RIM can stand for Research in Motion, which is a company based in Waterloo, Ontario, Canada founded by Mike Lazaridis. It sponsors RIM park, a recreation complex in the city. It is best known for developing the BlackBerry, a wireless smartphone device.
That depends on what kind of rim and the damage done to it? If the rim is steel, and the rim is merely cracked, yes it can be fixed. You would weld the crack closed. If the rim is bend, and the dent is not on the bead (place where the tire meets the rim) but ont he outside lip, you can simply sledge it back to place. If the rim has a flat spot, then the rim should be fixed by a professional to get it trued. If the rim is aluminum, everything changes. If there are minor scratches, you can get the rim resurfaced and the rim will be fine. After that, any other kind of damage is either irrepairable, or would most likely cost more than a new rim. Best thing to do, if it is an aluminum stock rim, is go to your local scrap yard and find a vehicle with one on it. You can even go to your local Costco tire shop(yes, Costco). They have a listing of a local wheel shop which can try to order your rim.
carve your rim
hello
RIM owns RIM
Craiglist offers the best prices and tire kingdom offers the best packages on rims and tires.
The south rim offers the panoramic views you most likely have seen in pictures, but it is the most crowded. The north rim offers more trees and shade making it a lot different. For a first time visitor I would go to the south rim because it is the most spectacular and there are also places where you can beat most crowds especially if you hike a couple miles into the canyon.
It can be done using sand paper and smoothing it, but its best to go to a pro.