Handling on bumpy roads
Discussion
Not rutted, pot holed roads but ones where the road subsides and stays intact. Eg big bumps / dips / hollows.
My old M5 E39 used to shrug them off and plough straight on - but not concentrating and only one hand on the wheel nearly meant it was ripped out of my hand. I think if I had two hands on the wheel it would have been fine but I figure part of having a light pointy front end means I also need to be a bit more ready when in Oxfordshire!
My old M5 E39 used to shrug them off and plough straight on - but not concentrating and only one hand on the wheel nearly meant it was ripped out of my hand. I think if I had two hands on the wheel it would have been fine but I figure part of having a light pointy front end means I also need to be a bit more ready when in Oxfordshire!
welcome to the world of 911 ownership 
when i first test drove my car i thought there was something wrong with the front end!!
However, the tyres you are running can have a HUGE effect on high speed country road handling. Mine used to be fitted with Pirelli's which used to tramline like
on undulating and off camber roads. My new set of Michelin are far better.
when i first test drove my car i thought there was something wrong with the front end!!
However, the tyres you are running can have a HUGE effect on high speed country road handling. Mine used to be fitted with Pirelli's which used to tramline like
on undulating and off camber roads. My new set of Michelin are far better. 997 C2S should be fine. Little things can make a difference - tyres, pressures, geometry, pasm, etc. PCCBs would improve the unsprung weight and damping.
Possibly it's just familiarity. A light(ish) sports coupe is always going to feel more lively than a performance saloon.
Have you done the Millbrook day?
Possibly it's just familiarity. A light(ish) sports coupe is always going to feel more lively than a performance saloon.
Have you done the Millbrook day?
BliarOut said:
kayc said:
chumley-warner said:
Koln-RS said:
You don't say what car, suspensin/wheels, set up you are driving.
Is it a 964RS or a Turbo Tip Cab
Is it a 964RS or a Turbo Tip Cab
sorry - C2S coupe 997
standard wheels / suspension
Boxsters don't.
Geneve said:
997 C2S should be fine. Little things can make a difference - tyres, pressures, geometry, pasm, etc. PCCBs would improve the unsprung weight and damping.
Possibly it's just familiarity. A light(ish) sports coupe is always going to feel more lively than a performance saloon.
Have you done the Millbrook day?
Possibly it's just familiarity. A light(ish) sports coupe is always going to feel more lively than a performance saloon.
Have you done the Millbrook day?
My Cebrera didn't do it and my AMv8 doesn't do it - I think it must be a function of the light nose.
I can't mind that much - I just ordered another c2S this afternoon
are you describing Bump Steer?
When the steering rack ends move through a different arc than the suspension arms they effectifely alter in length compared to the lower arm.
This has the effect of pushing the hub outwards and changing the toe in/out
Unless the car is damaged or the geometry is seriously our of spec there is little you will do to change it.
When the steering rack ends move through a different arc than the suspension arms they effectifely alter in length compared to the lower arm.
This has the effect of pushing the hub outwards and changing the toe in/out
Unless the car is damaged or the geometry is seriously our of spec there is little you will do to change it.
kayc said:
BliarOut said:
kayc said:
chumley-warner said:
Koln-RS said:
You don't say what car, suspensin/wheels, set up you are driving.
Is it a 964RS or a Turbo Tip Cab
Is it a 964RS or a Turbo Tip Cab
sorry - C2S coupe 997
standard wheels / suspension
Boxsters don't.
To use another contributors response, that observation is clearly "piffle"
KayC I have a stretch of road on my doorstep which features an off camber, downhill, sweeping right hander. It ties up the GT2s suspension in knots, and did the same (albeit to a lesser degree) to the GT3s suspension also)
The TITtronic Boxster S I was had whilst the GT2 was in for repair a few weeks ago, sailed around the same bend at least 15-20mph quicker in the wet, this without breaking sweat and without giving me TSS (twitchy sphincter syndrome
) In this instance the softish suspension,added safety net of PSM ? , a well balanced chassis and the more benign power characteristics of the Boxster, made it considerably quicker than the GT2 along this particular section of road.
Waits for the "should've bought a 996 Turbo" response....................
Edited by slippydiff on Wednesday 28th February 18:38
slippydiff said:
kayc said:
BliarOut said:
kayc said:
chumley-warner said:
Koln-RS said:
You don't say what car, suspensin/wheels, set up you are driving.
Is it a 964RS or a Turbo Tip Cab
Is it a 964RS or a Turbo Tip Cab
sorry - C2S coupe 997
standard wheels / suspension
Boxsters don't.
To use another contributors response, that observation is clearly "piffle"
KayC I have a stretch of road on my doorstep which features an off camber, downhill, sweeping right hander. It ties up the GT2s suspension in knots, and did the same (albeit to a lesser degree) to the GT3s suspension also)
The TITtronic Boxster S I was had whilst the GT2 was in for repair a few weeks ago, sailed around the same bend at least 15-20mph quicker in the wet, this without breaking sweat and without giving me TSS (twitchy sphincter syndrome
) In this instance the softish suspension,added safety net of PSM ? , a well balanced chassis and the more benign power characteristics of the Boxster, made it considerably quicker than the GT2 along this particular section of road.
Waits for the "should've bought a 996 Turbo" response....................
Edited by slippydiff on Wednesday 28th February 18:38
Got to say, wish I had a GT2, a GT3, to compare!
My 993 does the wheel wobble thing mych more than my earlier 3.2, but then it did have Bilsteins and a very good set up...
But all 911s do feedback a LOT about the road surface to the driver!!
Makes them better but not necessarily more relaxing as a daily driver!!
I think the comment about daily driver is accurate - I don't thnk I have ever had a car that is so front end light, even my Westfield has the V8 to hold the nose down. I think it just requires more concentration, which at the end of a hard day is not always what I wanted to do.
I'm sure the same road on a Saturday morning at 8am is 300% more fun!
I'm sure the same road on a Saturday morning at 8am is 300% more fun!
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