Hello and thanks for looking at my question. First let me say that Im new to the site and look forward to learning alot from all of you. Second, I did look through some past post to see if my question was already covered. I didnt see any but if I missed it please forgive me. NOW, my question. I have a 85 250SX and a 86 350X and my question is for both bikes. Can I use newer size wheels and tires on my ATC's (like 12" diameter wheels)??? I know I will need to pay attention to overall tire height and also bolt pattern and offset of the wheels. Beyond that are is there anything else Im not aware of?? I am wanting to do this to get a little bit of a different look but also to have sooo many more tire choices. I am thinking about going with tires that are 24x12-12 or 25x12-12. I am under the impression that the early 3 wheelers had the big fat tires to help cushion the ride since there was no suspension. But since both ATC's have front and rear shocks Im thinking I can do this. Can I go with a tire that is squared off instead of the traditional "ballooned" rounded shape? If so will this help or hurt the ATC's handeling? Also, what is to be expected if I use agressive tread tires? How about directional tires? Has anyone ever done this? If so how did it go? Any and all of your ideas and knowledgeable is greatly appreciated. Thank You!!!