Eundong

I just got the 2105 C300 with sports packages(sport suspension) yesterday. Well everything was perfect before I went into bumpy road. Because I live in SD I never notice that LA has a such sucky road. But the thing is I might gonna move to LA next year So, I was wondering is anyone know how to make suspension makes more softer?
Or I'm thinking to change run-flat tire to more comfortable tire. I'm guessing basic tire which is PROCONTACT GX SSR too hard for comfort ride. Can someone recommend replaceble tire? Tire sizes are front 225/45R18 and rear 245/40R18. I'm planning to raise aspect ratio about to 225/50R18 245/45R18 if it's possible.

Any info from other owners would be appreciated.

MASSC450

I have the even harsher riding 19" AMG wheels & lower profile run-flat tires on my 2015 C300 Sport 4Matic, but after a couple thousand miles I've notice the ride is a bit smoother now.

Have you checked your tire pressure yet? The recommended pressure is listed on the drivers door sill.

What will you do for a spare if you ditch the run-flat tires?

StanNH

The door sill lists maximum tire pressures. The recommended pressures are listed inside the fuel filler door, and they are lower. (Unless they've changed this recently.)

c4004matic

All you need to do is get rid of the runflats. Though soft on irregular roads, they are hard on pot holes. Essentially they have a small area of give and after that you enter the stiff sidewall. A set of decent normal all season michelins will fix that right up.

MASSC450

Good point Stan, I don't know why I keep forgetting this!



I guess I'm used to that information being on the door sill on my past vehicles, and not on the gas filler door.

MASSC450

I thought Mercedes calibrated the suspension on the W205 using the stiffer sidewall run-flat tires? Won't a thinner sidewall tire throw the suspension off?

What do you use as a spare if you got rid of your RFTs?

c4004matic

The contis RFTs are more comfortable than those of old to a point, if you go past the soft point are harsh too. People that lived in poorly patched potholed areas find out very quickly. As I pointed out elsewhere even ultra high performance offer a better ride.