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Can't cure the poor ride quality
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- Newbie
- Posts: 12
- Joined: Wed Oct 07, 2020 9:02 pm
Can't cure the poor ride quality
Hi guys, I need help I've run out of ideas to solve or improve the horrendously crap ride quality in my car.......my E85 when bought was stock, usual bouncy harsh ride.
Junked runflats, replaced shocks with new Bilstein B4 all round.
Only minor improvement.
So....then I stalled Eibach springs.....no change.
Got onto Bilstein about damping rates, they insisted for the Eibach springs to use B8's....better damping control sounded sensible.
So.....much ££ and B8's later......no damned change.
Still bouncy as buggery.
Now for comparison, my son's 3.0Si on cheapo stance coilovers rides loads better and he's got it about an inch off the floor.
My brother in law's 3.0 standard suspension is better.
My Z3 on Eibach Bilstein B8 is like a limo......my E36 coupe on same setup is good too, but it has a roof.
There's no damage.......so what the hell is going on.....??
Junked runflats, replaced shocks with new Bilstein B4 all round.
Only minor improvement.
So....then I stalled Eibach springs.....no change.
Got onto Bilstein about damping rates, they insisted for the Eibach springs to use B8's....better damping control sounded sensible.
So.....much ££ and B8's later......no damned change.
Still bouncy as buggery.
Now for comparison, my son's 3.0Si on cheapo stance coilovers rides loads better and he's got it about an inch off the floor.
My brother in law's 3.0 standard suspension is better.
My Z3 on Eibach Bilstein B8 is like a limo......my E36 coupe on same setup is good too, but it has a roof.
There's no damage.......so what the hell is going on.....??
- enuff_zed
- Lifer
- Posts: 15056
- Joined: Wed Oct 26, 2016 11:05 am
- Location: Attleborough, Norfolk
Can't cure the poor ride quality
What size wheels?
- thecremeegg
- Member
- Posts: 772
- Joined: Sat Jan 23, 2016 11:43 am
- Location: North Hampshire
Can't cure the poor ride quality
Mine's on B4s with Eibach springs and rides really nicely! Is it bouncy on a smooth road, in corners, or on bumps?
Z4M - Interlagos Blue with Black Leather
Z4 3.0i - Sapphire Black with Red Leather - FOR SALE!
Z4 3.0i - Sapphire Black with Red Leather - FOR SALE!
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- Lifer
- Posts: 11116
- Joined: Tue Feb 10, 2015 10:27 pm
Can't cure the poor ride quality
Tyre pressures…? Which brand of tyre you have pressures make quite a difference to ride quality. Maybe have a play around with them, a few psi either side of what is recommended has a definite impact.
M roady...OEM CSL’s, strut brace, Remus back boxes, ZHP
MR2 MK 2
E89 35i project car...mapped 365bhp, M4 stoppers & wheels, KWV3’s, H&R front ARB, M3 front arms, strut brace Eisenmann cat back race exhaust, VRSF downpipes inbound
E89 35is
G29
MR2 MK 2
E89 35i project car...mapped 365bhp, M4 stoppers & wheels, KWV3’s, H&R front ARB, M3 front arms, strut brace Eisenmann cat back race exhaust, VRSF downpipes inbound
E89 35is
G29
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- Newbie
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- Joined: Mon Mar 04, 2024 11:55 am
Can't cure the poor ride quality
I've only had a Z4 a few weeks and live on a scottish island - the roads here are even worse than on the mainland. It was pretty much impossible to drive it. I picked up a set of 16" wheels on ebay and stuck some non-run-flats on and it's completely transformed the ride. I'm keeping the 18" wheels in the hope that at some point before the end of summer the roads get patched up, but I'm not holding my breath for that...
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- Member
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- Joined: Sat Mar 12, 2016 9:42 pm
- Location: Midlands
Can't cure the poor ride quality
Brand of tyres, some non run flat are no better than good run flats. Ultra higher performance tyres are just as stiff on the side wall as run flat.
57 Plate 3.0 Si Auto SilverGrey - Red Leather
E89 35iS Space Grey - Red Leather. SOLD
56 Plate 3.0 SI Manual - Black with Red Leather- Scorpion exhaust, BC coil overs SOLD
54 Plate 3.0 SE Auto - Silver with Red Leather. SOLD
E89 35iS Space Grey - Red Leather. SOLD
56 Plate 3.0 SI Manual - Black with Red Leather- Scorpion exhaust, BC coil overs SOLD
54 Plate 3.0 SE Auto - Silver with Red Leather. SOLD
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- Member
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- Joined: Wed Feb 26, 2020 1:52 pm
Can't cure the poor ride quality
If a tyre has XL on it, generally has tougher side walls and if you are running lower profiles it will cause rough ride.
But given the Stance lowered suspension is better than your car on Billies it does sound really odd.
But given the Stance lowered suspension is better than your car on Billies it does sound really odd.
Currently BMW Z4 E85 3.0si
Previously
BMW Z4 E86 3.0si
Vauxhall VX220 Turbo
Toyota Celica ST205 GT4
Nissan R33 Skyline GTST
Vauxhall VX220 NA
Nissan 350z
Previously
BMW Z4 E86 3.0si
Vauxhall VX220 Turbo
Toyota Celica ST205 GT4
Nissan R33 Skyline GTST
Vauxhall VX220 NA
Nissan 350z
- tomscott
- Lifer
- Posts: 7485
- Joined: Mon Sep 19, 2011 12:26 pm
- Location: Manchester
- Contact:
Can't cure the poor ride quality
Aren't all those kits lowering kits?
Part of the problem with the poor ride is there is so little rebound in the back?
Part of the problem with the poor ride is there is so little rebound in the back?
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- Newbie
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- Joined: Wed Oct 07, 2020 9:02 pm
Can't cure the poor ride quality
Thanks for the feedback guys, all cars are on standard wheels, it's not tyres pressures, and it's not tyres.....just went up from uniroyals to softer Michelin's,.......if it was a motorbike, I'd assume the springs were to high rated for the weight of the car, and the dampers can't control the movement.
Am going to try the standard springs back in it with the B8's I think......I'll keep you posted
Am going to try the standard springs back in it with the B8's I think......I'll keep you posted
- MikeyH
- Lifer
- Posts: 4916
- Joined: Sat Oct 02, 2021 10:57 pm
- Location: Devon
Can't cure the poor ride quality
My e85 is on Bilstein B4s, sport springs, 18” wheels and 40 profiles front and rear. Yes it is a bit bouncy and crashy in potholes but not that bad. At first it seemed a bit uncomfortable but I must have become used to it as it seems okay now. I wouldn’t want 19” wheels. Ouch.
Now, Sterling grey Z4 2.2 with cup holders, stubby aerial and sport seats. Roadsters ‘cause they’re great with the roof down.
Ford Anglia, Red Sprite, a few MG midgets, MGB Roadster and yellow Ford Capri, all gone many years now.
Ford Anglia, Red Sprite, a few MG midgets, MGB Roadster and yellow Ford Capri, all gone many years now.
- Zulu4
- Member
- Posts: 838
- Joined: Tue Mar 16, 2021 1:22 pm
- Location: Lincolnshire
Can't cure the poor ride quality
I'm going to try a slightly less low profile tyre next time on my 18" wheels. I know the speedo will be slightly out, but I don't care.
2007 3.0si Auto Sport Roadster. Whippy.
Previous:
2003 3.0i SE Roadster. Whippy.
Previous:
2003 3.0i SE Roadster. Whippy.
- MikeyH
- Lifer
- Posts: 4916
- Joined: Sat Oct 02, 2021 10:57 pm
- Location: Devon
Can't cure the poor ride quality
With 40 profiles on the back, my speedo reads spot when driving past those speed signs.
Now, Sterling grey Z4 2.2 with cup holders, stubby aerial and sport seats. Roadsters ‘cause they’re great with the roof down.
Ford Anglia, Red Sprite, a few MG midgets, MGB Roadster and yellow Ford Capri, all gone many years now.
Ford Anglia, Red Sprite, a few MG midgets, MGB Roadster and yellow Ford Capri, all gone many years now.
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- Member
- Posts: 674
- Joined: Wed Feb 26, 2020 1:52 pm
Can't cure the poor ride quality
Currently BMW Z4 E85 3.0si
Previously
BMW Z4 E86 3.0si
Vauxhall VX220 Turbo
Toyota Celica ST205 GT4
Nissan R33 Skyline GTST
Vauxhall VX220 NA
Nissan 350z
Previously
BMW Z4 E86 3.0si
Vauxhall VX220 Turbo
Toyota Celica ST205 GT4
Nissan R33 Skyline GTST
Vauxhall VX220 NA
Nissan 350z
- Zulu4
- Member
- Posts: 838
- Joined: Tue Mar 16, 2021 1:22 pm
- Location: Lincolnshire
Can't cure the poor ride quality
Nice.
Does it make the ride a little softer ?
2007 3.0si Auto Sport Roadster. Whippy.
Previous:
2003 3.0i SE Roadster. Whippy.
Previous:
2003 3.0i SE Roadster. Whippy.
- MikeyH
- Lifer
- Posts: 4916
- Joined: Sat Oct 02, 2021 10:57 pm
- Location: Devon
Can't cure the poor ride quality
I don’t know as it came with 40s when I bought it.
Now, Sterling grey Z4 2.2 with cup holders, stubby aerial and sport seats. Roadsters ‘cause they’re great with the roof down.
Ford Anglia, Red Sprite, a few MG midgets, MGB Roadster and yellow Ford Capri, all gone many years now.
Ford Anglia, Red Sprite, a few MG midgets, MGB Roadster and yellow Ford Capri, all gone many years now.