yeah im running on 195/55/r15 for my iswara.

difference on fc is very2 minute to be noticeable. only difference on speedometer reading that is clearly noticeable
changing tyres and rims, u should be more aware on the speedometer in my opinion
eg: u thought u were driving on speed limit, but speed trap camera said otherwise -->> got summon

people have been endorsing me to use this: http://www.kouki.co.uk/utilities/visual-tyre-size-calculator
and this: http://www.1010tires.com/tiresizecalculato...-cde-gen-by-svr
so i think it should be good enough for projection purposes

EDIT:
experts said u should not exceed 3% difference between new and former profile tyres. so just changed to ps3 tyres in that range bro

both no. but i think ps3 is the better choice even though very expensive
i never see or heard anyone, up to this day, who bad mouth ps3

I've been using the GY F1 D5 for more than a month now and so far pretty happy with it. Got pretty good grip and seems to be good value for the money. The PS3 is also a very good tyre but quite a lot more expensive. The most obvious advantage of the PS3 vs the GY D5 is that the PS3 is non-directional asymetrical, so it's still easy to rotate in any direction. The D5 is directional so can only rotate in one side. Another thing is the PS3 should be more silent. The D5 is slightly noisy in my opinion.

Neuton NT8000.
Using it in my chicka's persona..
Ran 5k on it..
Grippy and decent tyre roar..
IINM its 190bux a piece, 195/55/R15

Comparing to the existing good year and the kumho solus that i have on my ride, its better than the latter two.

The comfort and noise level is good..
Way better than what i expected on a RM190 tyre.

I would recommend it.

i do a lot of hard driving myself despite that i shouldn't do that on a comfort tire.

regardless, my view on ps3 = overhype + overpriced
D5 = directional = shit noise