Bro kam tora expensive hai lakin aik bar acha ho jae to phir excel ke dobara adjustment ke zarorat nahain parhte.
All i have to do to keep my suspension safe is to drive in potholes slowly other than that it is perfectly fine. Fuel consumption does go down around 5 % other than that no flaws at all. My car is around a year old and i dont have a single issue. Just have to be careful around pot holes.
So my opinion is to go for 13 but consider the things i mentioned above. And i cant tell u the hole adjustments i made on the excel and suspension becoz that will be too long u can call me i will inbox u my no then i can tell u in detail.