There's a reason why stock cars don't come with turbos and huge wheels.
Cars are built with economy and performance in mind. Not everyone intends to race, a lot of people want good economy and a quiet ride.
Hence, manufacturers focus on these things, putting in things that:
- are cost effective
- improve fuel economy
- maintain a quiet, smooth ride.
I don't use NGK, I use Denso IK20s. They are above 3500rs. Would u like the company charging u 3500rs every time u went to get plugs changed?
Stock tyres are again supposed to be cost effective but both variants of the Swift have excellent tyres so no worries there.
Over speeding is dangerous. Please refrain from it under all conditions, especially if u have passengers.
You are responsible for your own life as well as theirs.
Sent from my GT-I9300