the height of the tyre.the side profile..if u put
195/50 and 195/55 together , the 55 onr would be higher.

price most of the time is good but heard ppl complain their service sometime.I myself had a bad experience there.which tyre u is in ur mind now?because If u choose michelin or any better tyres the price would exceed 1500.

if use 55 series surely will be more expensive la.cc5 for 195/55/15 already around rm195 if not mistaken.so sureley will exceed rm1500.i changed mine at shah alam.price michelin is very cheap there.other brand is almost the same with price at klang.sometimes expensive few ringgit lor.but service is good and the guy is quite friendly

my opinion ar..use 55 series better lor.price more expensive but since our road got many hole,better protection for the rim la alt is only a bit difference in height.50 series will look good if u use lowering springs.