How dangerous are our cars at high speeds? - Page 4

Jan 16, 2022 | 04:28 PM

#76

See63r

Junior Member

Joined: Nov 2021

Posts: 15

Likes: 1

2020 c63s coupe

This smoking tire review of the carbahn c63s coupe has a point on 15.15 where he mentioned a little wriggle under hard braking.. I think that is what I felt on my rear as well. It just feels like the rear of the coupe is not as planted as it should be.

Jan 16, 2022 | 04:34 PM

#77

superswiss

Out Of Control!!

Joined: Nov 2018

Posts: 11,398

Likes: 5,323

From: San Francisco Bay Area

2019 C63CS

Quote:

Originally Posted by Engadine

Would you recommend these tyre pressures on a C63S with 19/20s for everyday fast driving for MPS4S also, or just for autobahn speeds?

Yes, I would and I do. The higher pressures are only needed if you load up the car or drive above 155 mph for a prolonged period like on the German Autobahn. The higher pressure allows the tires to cope with the deflection and not overheat. I spent two months in Europe with mine, and even there I kept my pressure at 33/32 most of the time. No issue during high speed braking maneuvers when somebody pulled out in my lane not seeing me. The only oh **** moment I had was that one time a van pulled in front of me and the road was slightly damp and ABS kicked in at north of 150mph. That gets your heart pumping for a moment. Occasionally going above 155mph is no problem at those pressures, either. Just keep an eye on the tire temperatures and slow down if they get hot.

EDIT: Just to further underscore this, on the track you'd use even lower pressures. You'd actually want the hot pressure to be around this when going on the track. I made the mistake of not lowering the tire pressure when I went on the Nürburgring, and the car became very floaty as the pressure increased under the heat.

Last edited by superswiss; Jan 16, 2022 at 05:12 PM.

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