Ford party does not go from 120km

Good I have a Fiesta Fiesta Move 2011 and it does not go from 120km and with O/D it reaches 130 but it is not heard any fault, the measure of the rubbers of 185/65/r14 to 195/75/R14 is also heard that affects the box and the speed? I have that hard because he will send him the engine since the previous owner let him reheat and started to enchumb spark plugs but it is a new car only has 92000km and before doing the engine with everything and his evil reached 160 170 170 without problems, can anyone get me out of doubt ???

Hi Martin94, which, when changing and putting that measure of wheels, you lengthen the development and the best it costs it speed (surely accelerates more slowly), then another issue is that when the engine remakes the distribution has not pumpled it well and goes out of point, from there that between one and something else, it does not go well. Greetings!!