OcUK Trackday: Donnington 30th October - £139 Full Day (Open Pitlane)!!

Feels to me like the fronts are locking. It is lowered yes, don't think there's any compensator on though. They have been on for a week now, and the immense bite that comes with the brake-in coating has gone now so I would have thought they're good to go.
Other than being super keen to get the ABS flowing, they seem much stronger than the greens from a cold temperature.
 
Yeah the yellows have awesome bite. Sounds like you need to balance it up then if it's the front. Surprised you can lock the fronts in the dry without trying though
 
I need to try and decide what pads i want for mine. It seems a merchant on mx5nutz has just put up prices for Mintex M1144 pads which seem to be inline with Yellow stuff and Axxis ultimate pricing.

As if i wasn't confused enough already about what to get :(
 
I will order the rears next week then and hope it is more sensible. Driving it like this on track would be hard work.
Maybe with more heat in the tyres would work better. I'm running Yoko AD08s and the temp out there is cold tonight, 8C. I've not run with these tyres in such cold temp before so maybe it's normal for them to be hopeless?
 
Yeah it sounds like the tyres to be honest. That was going to be my next question. They aren't that high friction pads spits probably a coincidence.


Give them a longer drive to get OEM heat in. My old Bridgesrones needed a few miles on a old day before they worked. I'm worried I'll have the opposite problem with tyres on track and they overheat.
 
You running S001?

I reckon the track day will finish off my rear tyres, and with winter creeping up I don't really want a track biased tyre on the front so going to want a full set. I had BS turanza on my old Colt and really liked them, good grip and steering responsive and communicative. I'd buy again, what do you think of S001?

As for the track, last time I saw the outside half of the front tyres melting quite a bit on the surface and the insides looking fresh. Providing the conditions aren't poor, this time I'll look to taking the camber up from -2.5 to -4. Rears were fine, but too much heat led to too much air pressure and too much sliding. Once it felt like my driving was more akin to a rally driver than a circuit driver, I'd be coming in anyway :p
 
I'm spectator and passenger. If anyone wants me to attempt to take photos (I am rubbish with cameras), use my GoPro Hero2 or even let me sit as passenger (:D!) it would make me enjoy the day more.

Sorry I can't drive round, will have my Scirocco full of Corvette Parts/wheels/roof and I doubt the Corvette will pass any of the noise limits.
 
-4 sounds too much. How much castor? Does it have that much roll that it's going to get the tyre flat?!

The edge differences could be toe induced scrub which will feather away the edges. Once camber wears a tyre into a cone it then tends to stay that shape and wear evenly.

My fronts are -1 deg rears -2. The rears wear dead flat with zero toe then front wear on the inside edges.

My tyres will be F1AS2. I'm hoping it's ok but who knows, it's not going to be 25C at least, its likely the rears will overheat so need to work on starting pressures. The goodyears are a softer sidewall so ill wind the konis up to max, even then I'm slightly worried about how it's gonna feel

But i guess at least I'm ready for rain :D. I had RE050As then the S001s before, the S001s worn quicker but were better in wet. Both were better on a dry warm day than the goodyears, both feel and grip and felt confident to press on just not as much in wet. the f1as2 are opposite, great in wet and crap conditions but a bit vaguer in the dry.

The above is relative though. Both are miles better than something like T1Rs and my car is very sensitive to tyres, exaggerated by the poly bushes.

Oh and S001 will probably be my next 'set of four' tyre. At the moment I think I need to replace the fronts before the rear on a RWD:s. need the get the alignment checked (WIM fast road settings at moment )
 
Oh and 60 cars?! Whats their limit as it sounds busy, although a lot are novices so might end up cooking their brakes/cars /tyres by lunchtime
 
Simon said:
-4 sounds too much. How much castor? Does it have that much roll that it's going to get the tyre flat?!

The edge differences could be toe induced scrub which will feather away the edges. Once camber wears a tyre into a cone it then tends to stay that shape and wear evenly.

My fronts are -1 deg rears -2. The rears wear dead flat with zero toe then front wear on the inside edges.

My tyres will be F1AS2. I'm hoping it's ok but who knows, it's not going to be 25C at least, its likely the rears will overheat so need to work on starting pressures. The goodyears are a softer sidewall so ill wind the konis up to max, even then I'm slightly worried about how it's gonna feel

But i guess at least I'm ready for rain :D. I had RE050As then the S001s before, the S001s worn quicker but were better in wet. Both were better on a dry warm day than the goodyears, both feel and grip and felt confident to press on just not as much in wet. the f1as2 are opposite, great in wet and crap conditions but a bit vaguer in the dry.

The above is relative though. Both are miles better than something like T1Rs and my car is very sensitive to tyres, exaggerated by the poly bushes.

Oh and S001 will probably be my next 'set of four' tyre. At the moment I think I need to replace the fronts before the rear on a RWD:s. need the get the alignment checked (WIM fast road settings at moment )
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Hmm, F1A2 sounds a bit like Continentals (all), great grip in all conditions but a bit wishy washy when it comes to feel.

Back to alignment, the caster is 8'14" so quite a bit there too :p Zero toe in the front, don't know what the Ackerman effect is though. There's a ton of roll in the car despite it having relatively stiff springs (7k/6.5k) and ARBs. I'm going to try and help this situation by changing out the wishbone mounted drop links for strut mounted ones.


Simon said:
Oh and 60 cars?! Whats their limit as it sounds busy, although a lot are novices so might end up cooking their brakes/cars /tyres by lunchtime
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Wouldn't worry too much, every track day I've been to has quieted down considerably by the latter half of the day. Even the evening session we did last time was busy for the first hour then tailed off. By the time of the chequered flag there were only a handful of cars running still, putting in some fairly serious laps on an empty track.
Wish I had a photo of the last cooldown lap actually, me and two friends also in e36s cruising 3 abreast down the Dunlop straight into the sunset. We should do similar this time.

Anyway, Booner you're welcome to passenger in my car. My last passenger whined and moaned about not having fancy fixed bucket seats though :p
 
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Wow I thought I was running a lot at 6 degrees castor.

You don't need more camber. Are our bushes ok on the front as static angles can be very different to when it's driving.

The F1AS2s aren't as bad as the CSCs. I think they are good for sidewall compression and feel stiff. It's the resistance to twist where they lose out to Bridgesrones. I commented on the EVO tyre thread about the internal slip angle meaning I need more steering angle to get the same amount of 'turning'.

Anyway I digress. Have you got any other settings to try. Where did you get the current ones from. Any more camber is only going to make things worse I expect. Especially in straight line braking
 
Simon said:
Wow I thought I was running a lot at 6 degrees castor.

You don't need more camber. Are our bushes ok on the front as static angles can be very different to when it's driving.

The F1AS2s aren't as bad as the CSCs. I think they are good for sidewall compression and feel stiff. It's the resistance to twist where they lose out to Bridgesrones. I commented on the EVO tyre thread about the internal slip angle meaning I need more steering angle to get the same amount of 'turning'.

Anyway I digress. Have you got any other settings to try. Where did you get the current ones from. Any more camber is only going to make things worse I expect. Especially in straight line braking
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I know what you mean about the steering input, when I changed from Avon ZZ3 to the AD08 I kept turning too much at first. I don't want to go back! I also don't want S001 if it will wear down fast. Ugh, maybe I will just get Turanza again, not the last word in grip but I liked them on my last car :confused:

Bushes should be good. There's only one bush in the front end on these, rear of the wishbone and mine has solid eccentric ones which I'm told are in good shape and won't ever wear due to being solid. I have a pair of new ones sitting in the garage anyway mind. I will overhaul the front end at some point, new wishbones with solid mounted ball joints, new bushes, new steering rack and ends.

That amount of caster isn't that much really for one of these, M3 has 7.5deg from the factory. My settings are based on the ones from the definitive alignment guide on bimmerforums. Rear camber is compromised a little due to the low ride height but I'm very happy with it. I've tried less front camber and didn't like it, I've run it with 3deg before too and it does give a better feeling than 2.5. Front camber seems to have a dramatic effect, the bimmeforum guide says 2.5 for street and 3.5 for track.
I will try more anyway, if it doesn't work out it's a 10 min job to change it back. Last time round the tyres were not a bottleneck in braking, if you will, it was the pads/fluid/whatever giving up.
 
I will be attending this one..will be my 4th time at donington this year :eek:

Drivers:
Simon - S2000 (Plus 2: Blue S2000 + Silver 182)
Gibbo - 911
Clarkey - 328
Paradigm - LCR
ScoobyDoo69 - Subaru (plus brother)
Vigoro - MX5
Nathwraith - Supra TT (Automatic of doom)
kaiowas & Vix - Mk1 MR2 SC, or turbo if it's running by then
Telescopi - Fiat Coupe 20v Turbo
CaptainFail - Clio 172 + Brother in Subaru Legacy B4 RSK.
Gonzo0 - Focus RS Mk1
 
Drivers:
Simon - S2000 (Plus 2: Blue S2000 + Silver 182)
Gibbo - 911
Clarkey - 328
Paradigm - LCR
ScoobyDoo69 - Subaru
thesupermario69 - MINI
Vigoro - MX5
Nathwraith - Supra TT (Automatic of doom)
kaiowas & Vix - Mk1 MR2 SC, or turbo if it's running by then
Telescopi - Fiat Coupe 20v Turbo
CaptainFail - Clio 172 + Brother in Subaru Legacy B4 RSK.
Gonzo0 - Focus RS Mk1
 
Clarkey how many miles have you done on those Yellow stuff pads ?? I had same with green stuff and red stuff till brake in layer gets ripped off. And that was with pads on front and back at one :P.
 
300+. I know what you mean about the brake-in coating, puts your face through the windscreen if you even think about pressing the pedal. That has gone though now.
 
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