Originally Posted by
BillAce
I traveled on dome back roads in my 2021 G4 and was also impressed with the ride improvement compared to my 17 hatch. The 17 would bottom out and float and that is pretty much gone in the 21 sedan. Maybe the spring rates were increased since all else appears the same?
BillAce and all - I would imagine that the sedan would use different spring rates in the rear. Maybe all 4. Because the difference in wheelbase will lead to dynamic performance differences. However, I'm no chassis expert. Far from it. It could be that "one size fits all" works just fine between the hatch and sedan. If it were a Toyota, I can almost guarantee the 2 would have slight differences. But in the case where an OEM is trying to keep a car ... inexpensive, keeping the same chassis setup between the two would help control cost.
As for the original issue, I'm going to say that long term wear and tear probably has a lot to do with feeling the differences. Yet I've never rode in a pre-2017 model so I couldn't really say. My car has only seemed to bottom out once in the rear. 2 people in the car and went over some railroad tracks. It really reacted harsh to bottoming out. Almost felt like the rear bottomed out and that caused it to launch the rear end off the ground ... sort of like a horse bucking its hind legs off the ground.
__________________________________________
View my fuel log 2020 Mirage ES 1.2 manual: 42.4 mpg (US) ... 18.0 km/L ... 5.5 L/100 km ... 51.0 mpg (Imp)