I actually heard of someone doing that. Ironically, it might also be cheaper in the long run if you went with the big 20" 'bling' rims. At least the tyre profile would be more common. Im sure that the 19" tyre size will become more popular in time. Isnt there another car model with this spec? (thought i heard about another new car having the 19s too.) Unfortunately the buggers have us cornered, i went the option to my local tyre guy and asked if i could put the 17 inch wheels on, but Toyota have altered the KX-S and Grande load ratings, making it not warrantable (i believe this to be so) to put un-loadworthy wheels on these 2 models. The weight must have been changed. Otherwise, i could have put a set of 4 wheels on with tyres for the same price as 4 sets of tyres! I also do not know what this does to your insurance! I hadn't asked the 20 inch size question though! I ave only taken on 2 tyres at present hoping like mad that in the next month some competition will have been made available to bring these guys back to bloody reality!!! i mean come on $500/tyre what a bloody rip off!!!