By the time you get it done right, the welding amd machining cost will be more than just buying the right wheels in the first place. Also, there's no way to know if that much modification will weaken the wheels enough to make them dangerous. You're not just risking your own life- - - -what about all the traffic around you when one of those wheels disentigrates?
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!