Bro 6UE5T,

Wanna ask u.

My ori tyre size was 205/55/R16. I have upgraded to 215/45/R17, is it a correct size up? Thks.

Yes 225/45/17 is the better conversion size.
Advantages: better grip coz wider, and more comfortable coz 0.4cm taller sidewall plus also slightly higher ground clearance due to that 0.4cm. Subjectively looks better too coz less fender gaps by 0.4cm and looks meaner coz wider from the back. So in summary, should've gone with 225/45/17 coz it's the better choice.

can

Yes can, 225 tires can fit rims from 7jj-8.5jj with 7.5-8jj as the ideal fit.

Sometimes, i kind of envy those people who live in mid peninsular. Despite near the capital city, the prices are actually more reasonable than those found in the south. Sometimes, despite going through the hassle, singapore is actually cheaper