Ride quality
#1
Ride quality
I guess it’s hard to gauge as we get used to our own cars, but when it comes to suspension I’m wondering if mine needs some updates. I’m really just wanting to improve street driving ride quality so is a new set of OEM shocks the way to go or am I missing something else that should be done concurrently?
#2
RL Community Team
Rennlist Member
Rennlist Member
If you really want to the improve the ride quality and get far better handling as a bonus just go all the way with a set of Ohlin R&Ts.
#3
Intermediate
Join Date: Sep 2014
Location: Guelph, Ontario
Posts: 46
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Tires will go a long way too. I went from 10yr old Hankook V12 Evo in stock sizes to new Michelin Pilot Super Sport in 997tt sizes and they made a huge improvement in impact harshness. As much as swapping the oem suspension out for Bilstein B8 and H&R springs.
In retrospect I wish I went with Ohlins R&T from the start.
In retrospect I wish I went with Ohlins R&T from the start.
#4
Instructor
I did 2 things that made a big difference. My 996tt is my daily driver and it was beating me up. I changed from 295/30/18's to 295/35/18's with matching rev fronts and I honestly think it looks better with them. It also scrapes a little less on my driveway. I then lowered my tire pressure to 30 all round. Since I'm just putting to work the 30 works fine, I would change it for hard driving. Ohlins will be next when my stock suspension wears out, I have 62k on the car now.
#5
porsche shocks arent any different than any other car brand. over time and wear they dont do the job as well. when i forst got my car it had 30k miles on it. not a drop leaking from any shock. (jrz) i sent them to olsen for a rebuild and every shock was blown internally mixing the oil with the nitrogen. looks like caviar !
if they are old rebuild or replace them
#6
Three Wheelin'
I did 2 things that made a big difference. My 996tt is my daily driver and it was beating me up. I changed from 295/30/18's to 295/35/18's with matching rev fronts and I honestly think it looks better with them. It also scrapes a little less on my driveway. I then lowered my tire pressure to 30 all round. Since I'm just putting to work the 30 works fine, I would change it for hard driving. Ohlins will be next when my stock suspension wears out, I have 62k on the car now.
I did a little research, there's only few options. Goodyear Eagle F1 Supercar 295/35/18s are 26.1" tall with 801 revs for mile. Closest matching front tire I can find is 235/45/18 @ 26.3" and 793 revs per mile. These numbers seem to be inline with the factory front to rear height ratios, just an inch and change taller.
Which brand did you go with and what size did you choose for the front?
I'm still on stock suspension (+GMG sway bars) so I am looking at all options for my next set of tires, I don't think the taller 295/35s would would on many lowered cars though?
Thanks
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#8
Instructor
Ride quality
Here are the tires and overall look. The tires are Conti DW's and are within 1 rev of each other though I don't know what the new version is. Having a higher sidewall also fill the wheel well a little better as I have the stock suspension setup. I can't lower the car or I can't get it in the driveway. I have had the same tires on my 335i and they have done well. I don't track this car so I was actually looking for a soft sidewall. The changes have made the ride drastically better. It's still firm but not harsh and really solid in rain, much better than the 335. Irregular wear has not been a problem so far and I put 20k miles a year on it. The tires are 225/45/18ZR and 295/35/18ZR. And yes, it's short a front spoiler temporarily.
Last edited by lconn; 04-09-2018 at 10:26 PM.
#10
Three Wheelin'
#12
Three Wheelin'
I had the Conti DWS on my car when i purchased it. 295-35 in the rear and 225-45 in the front. Super all season grip and generally good driving tire. Quiet and lasted over 20K. A little slippery on the track though. I spun coming out of turn 5 at Laguna, definitely a code brown moment. The size stagger was slightly off with smaller in the front. I used to get occasional PSM interventions with these. Since going to stock size PS2s, it does not happen any more. the PS2s are much more predictable at the limit on the track, i shaved about 2-3 seconds off my lap times. I definitely need to be more careful in the rain with the PS2s, the Conti DWS were incredible in the rain.
#13
Three Wheelin'
I had the Conti DWS on my car when i purchased it. 295-35 in the rear and 225-45 in the front. Super all season grip and generally good driving tire. Quiet and lasted over 20K. A little slippery on the track though. I spun coming out of turn 5 at Laguna, definitely a code brown moment. The size stagger was slightly off with smaller in the front. I used to get occasional PSM interventions with these. Since going to stock size PS2s, it does not happen any more. the PS2s are much more predictable at the limit on the track, i shaved about 2-3 seconds off my lap times. I definitely need to be more careful in the rain with the PS2s, the Conti DWS were incredible in the rain.
How did the steering response feel with those taller sidewalls ?
#14
Three Wheelin'
The PS2s definitely made it feel tighter. I am sure some of it was the sidewall height and some of it was tire/tread design. The Conti DWS tires are "all season" tires after all.
#15
I've become a vocal Ohlins R&T advocate around here the last few weeks. Without a doubt will be your ideal solution that enhances compliance, composure, and response with one system. And you can fine tune the adjustments to any particular need in all of 2 minutes.
In the last month, I've had Ohlins and new Pilot Sports installed. Haven't had a day warmer than low/mid 50's, most of my drives have been in the 30's in fact, but the ride quality is still on another level. 70's on Friday and Saturday - if anybody needs me, I'll be piling miles on my car.
-Joe
In the last month, I've had Ohlins and new Pilot Sports installed. Haven't had a day warmer than low/mid 50's, most of my drives have been in the 30's in fact, but the ride quality is still on another level. 70's on Friday and Saturday - if anybody needs me, I'll be piling miles on my car.
-Joe