So, I won't go into details but I basically destroyed the cast rims on my GS last weekend. I will say I had a BLAST doing it though! Now I need to replace my rims. The cost of OEM's vs. Woody's is basically the same. I don't do a whole lot of dirt and at 5'8" a 21/18 combo really isn't going to do me favors. So, I'm going to stick with the 19/17 sizes but with one question: OEM's vs. Woody's. Alternately stated: Tubes vs. Tubless. 'Cuz the Woody's need a tube on the front, minimum. I'm not big on tubes...but the BLING factor of the Woody's is darn hard to avoid! One Day I will do the TAT. Not sure if that makes any difference. Thoughts?