Ok cool, now comes the tricky part.
1 Tyre upgrade - which ones is better - 205/55/ R16 or 205/50/ R16
205/55/16 would be better. BTW we have people here having both the sizes. Nickandre's Grey VTVT SX(O) has 205/50/16 where as TopGun's White CRDi SX(O) has 205/55/16. Also you can try 215/50/16. That would be killer.
2 For horn replacement do we need to open the entire bumper?
I think Yes. I also want to do the same on my almost 15days old Fluidic but will be doing after the first service.
3 Shd one go for synthetic oil from day 1 or shd we get it in the first service. which brand is the best
I dont think synthetic oil should be used from day 1.
4 Which type of diesel is best for CRDi engines. someone said the high end diesel shd not be used in the new CRDi engines
I use normal diesel.
5 Anything that can be done to make the suspension stiffer???
There are rubber pads Autoruner (donno the exact term) that can be used to stiff the suspension. Our member P3T3R has done it in his white i10.
6 Which is the best replacement for the headlights. durable and efficient
IMO HIDs are far better than any halogen bulbs but yes Projectors are the best!
7 Any suggestions pertaining to leather seats
I will be going for the normal fixed ones for my Verna in a couple of weeks. It all depends upon the need and usage IMO.
8 Suggested components for the new Verna; most suitable for the company fitted head unit??
ICE gurus shall clear this doubt.
Will anything void my warranty. Also it there anything upgrade for which i shd go for on Day 0 itself
I don't think any thing above upgrades might void the car's warranty unless and untill you cut any company wiring!