Dear Khurram_Aziz Salam,
I was going through this thread since i also want to change tyres on CIVIC.
As you have installed the same size as stock wheels but a better brand than EURO STAR, can you please share what noticebly changed ???
Like grip, handling.... compared to euro-star i am not sure if you have tested euro star before changing.
Also in my opinion its good that you kept original size but with better quality, since keeping original tyre size wont cause any extra loads on engine etc....
I have done my part and stuck since i have OEM alloys 15" dont want to mess around with it just need to replace EURO-STAR have driven 1300KM till now first i didnt want to replace EURO STAR since i thought it would be better than their XP brand but i guess i was wrong.
My feeling is euro star tyre is very clumpsy have driven at speed 175KM and some short shoots kinda street racing thing but dont get a feeling regarding handling and braking that i am driving a civic........
So may be tyre change would help me get out of this feeling or may be this civic is just another crap we in pakistan have to deal with 
Any how my Part either i stick with stock tyre size i mean profile and width, or 205/60/ R15 but this makes car few mm/ approx 1/2 inch lower but would be easy on engine, or i go for 205/65/R15 which would increase some 1 inch i guess but would be going way out from stock.
So my point is like you stayed with OEM size i might want to do the same only if there is some noticeable difference other wise no point .
Please provide your experience to help me understand.
Other fellow memebrs can also reply as suggestions are welcome 
Also i am looking at YOKOHAMA advan AD08, or AD07, found out that 205/60/R15 would be available in AD07 again would lower my ride which i am not that much interested since everyone knows how roads are here 
Thanks.
Regards,
KJ.