I'm 17 and unemployed so i cant afford an expensive fix, I was essentially given my jeep yj from my moms friend, but i'm thankful for it. Anyway, I think it is geared really low, I'm in 3rd gear and sometimes even 4th at around 60km/h (37.3 mp/h), It has 27 inch tires, god only knows why so small, but is there any way to change the gearing easily or cheaply, or possibly investing in bigger tires might change the ratio? I'm not sure, or should i just drive it at Low rpm in a higher gear to save gas. 1992, jeep yj 4.0, all stock. Thanks!