2010 rxv want your opinion

[svtnos]

So i picked up a 2010 rxv with the 13 hp kawasaki.. i lifted it , put on some 22x10-12 wheels and tires .. ive done spark plug , air filter , oil change , fuel filter , fuel pump , & new severe duty drive belt .. it runs great , but i fee like it just shakes/vibrates the cart more than it should upon acceleration and honestly all out driving .. our 2004 club car with the fe290 with a lift kit wheels and tires is all around alot smoother .. i figured with the ezgo being so much newer itd be alot more powerfull and smoother .. but its not, even with the adjusted gov. The rxv is only just as fast.. did i do something wrong maybe? Are my expectstions unreal? How smooth is everyone elses' gas rxv ?