rubi08unlimited

I really like the look of 37s or 38s but have concerns about the weight. I'm pretty sure the BFG KM2's are the lightest tire in that size but is there a site that lists all the weights of tires and rims? Does anyone know what brand rims tend to run lighter? If no such site exists, why don't we get one going with info such as weight, tread width, tread depth. I notice that retail sites list some but not all the information. I notice they often leave out the tread depth if its not competitive of they will leave out the tire's weight if it's a lunker. Would a moderator be willing to update the database if we collect the data?