Can I use a combination of sport spring for the rear of my
while the front remains using original spring?
Answer : Vehicle handling is a combination of factors such as
spring rates, shock absorber settings, stabilisers and tyres. While I should
not generalise by saying you cannot use a combination of a stock front
spring and a sports rear, it is highly unlikely such a combination would
work because the rear springs would most likely be stiffer than the front
and there would be a tendency for the car to oversteer. Again, I am making a
guess as I do not know the exact settings. My advice is to change all the
springs to the "sport" ones and to follow the advice of the spring
manufacturer on the settings as they would have done tests and can advise
you best on the set-up. The alternative is to work it out by trial and
error, but unless you have the facilities of a racetrack, you really will
not be able to get it done properly.