Aoa
Guys want to share,
My dad bought Mercedes C180 Model 2015 from Shahnawaz Motors Islamabad.
So for regular maintaince we went to there workshop at I-9 Islamabad.
There i met with a guy he was assistance manger technical support Mr.Rafay Majeed.
he was also an assistant support engineer at Mercedes Germany.
I asked him about tiers and what is the true picture while companies or engineers select tiers.
The crust of all our discussion was that suspension, steering assembly, engine throttle and level of ground clearance is tunned according to tiers at the time when car is designed and manfactured. So original tier size is best possible fit for your car.
Then i asked him why companies like Honda,Toyota and Suzuki go for low brand tier why not they go gor good brand.
He said we dont have this in Mercedes but about those three companies and also companies who want to increase there profits tiers are the best possible part they can cheat.
So stick to original tier size in good brand.