Im looking at dropping down a rim size so i can run slicks on my CSL.
Been looking into it and im worried that my AP brakes fitted on the front will hit the inner rim.
Does anyone know whether they will? as i don't want to buy find out the hard way!
Also has anyone run any slicks, what are they like etc...any recommendations
Thanks
back to your question!
most 18 inch rims should be fine with APs, just check you have Cp5575 front kit and not CP5555 which are slightly bigger callipers, CP5575 was specialy modified to fit under OEM 18 M3 inch rims.
I didn't think I was having a go at anyone? However I wasn't really referring to pick up, I was thinking more of the tyre wear around that, I wasn't referring to your car as anything other than an example, sorry if you took that as negative, it was not intended that way. My point was that running slicks works up to a point and that it was not completely without some risk (which is negated by checking the car) that's all but it was an option when wanting to have more fun on track.
As for laptimes and comparing to other cars on track, well that's not something I do, for a start 90% of a lap time is the driver, always has, always will so I never compare car to car on track as its moot. Unless of course it's racing and that is more than times, its who finishes ahead, not an attitude I think would go down well on a track day!
Running slicks does add fun, but if the desire is to be faster then there are other ways of doing it, thats not to say running slicks is wrong, far from it, just one option when looking for faster times. Thats all I was trying to get across.
As some of you know, I've a mentalist race-prepped evo. That runs 285 profile DZ03 rubber at each corner.
I don't run slicks. And I'll tell you why by way of an example.
When I was at snetterton last in the evo a fellow northlooper was out in a GT3 on cups. He was going round Corham as fast as his level of grip would allow. He came and saw me later to tell me that I went around the outside of him like he wasn't trying.
Stick slicks on and you'll go faster still.
And therein lies the issue. When you do come off you'll be doing god-only-knows how much extra speed than you were before. Fine if its a track with a load of run off (but I still reckon you'll end up in the tyres) but I enjoy trackdays at the ring. Not quite the run-off area you need ;-)
The other issue is that these cars weren't designed to run with that level of grip. Wheel bearings, strut towers, suspension, even the chassis will be asked to do stuff it wasn't designed for. I haven't had the experience of a wheel bearing breaking mid-corner but I can't see it being a cheap one.
My last trackday was the first trackday I've done in the CSL, sitting on smaller-profile-than-specified contis. UB was there with his R888. And he was tramping round far faster than I with barely a glimmer from his DSC light. Me? I had the DSC off and was having the time of my life. Yes I spun on one attempt to set a new drift record ;-) , but at the speeds I was doing, it was a non-issue.
I want to learn how to drive and control a RWD car properly and I don't see that happening with slicks. I'd be back where I was with the evo, tramping around but ultimately not learning much.
Ultimately we all have different reasons for trackdays so I'm not judging. If you want to blast around (and timing suggests you do!) then go for it.
I did just buy a set of cups for the CSL 19" so it sounds a bit hypocritcal, but I'm waiting on some TD 18" where I'll run Federals or something. The cups were just to have a set of CSL wheels with the specified tyres on them :-)
I didn't think I was having a go at anyone? However I wasn't really referring to pick up, I was thinking more of the tyre wear around that, I wasn't referring to your car as anything other than an example, sorry if you took that as negative, it was not intended that way. My point was that running slicks works up to a point and that it was not completely without some risk (which is negated by checking the car) that's all but it was an option when wanting to have more fun on track.
As for laptimes and comparing to other cars on track, well that's not something I do, for a start 90% of a lap time is the driver, always has, always will so I never compare car to car on track as its moot. Unless of course it's racing and that is more than times, its who finishes ahead, not an attitude I think would go down well on a track day!
Running slicks does add fun, but if the desire is to be faster then there are other ways of doing it, thats not to say running slicks is wrong, far from it, just one option when looking for faster times. Thats all I was trying to get across.
No John, I didn't say that you were negative or having a go (sorry if my tone indicated something like this).
Quite the contrary, your input is very good :thumbs:
And of course you have far more experience than me :beer:
Shimmy, all good mate.
John is making very valid points. I don't disagree that fresh cups could make faster laps (you mentioned that curly has tried them extensively).
However, give them a try at some point :thumbs:
I think the point being if it is speed you are after with slicks then where slicks get alot of their speed from is running with firm springs, rigid caged car, and the right geo.
I spent alot of time with Dontdobends who was running his m3 race car and previously his CSL on used slicks and i think Johns conclusion was that on a non race car (or non set up race car) used slicks were more or less comparable to new Cups for outright pace, maybe with a slight advantage with slicks if you have a/m suspension
id love to give slicks a go tbh, and maybe next year i might break my rule and run some somewhere or i may have to just wait fior a race drive:smokin:
Yeah I was running part worn slicks but for me it was due mainly to cost saving like Thorney says after about 5 heat cycles you do lose a lot of grip over a new slick. Sometimes my slicks would be up to 15-18 heat cycles and the rubber would be as hard as a dogs head and would be a lot slower than a new cup, you have to run a lot of camber with a slick to get the best out of it. Put a new set of cups with 3.5 degree of camber and the thing will grip
Put a new set of cups with 3.5 degree of camber and the thing will grip
+ 1 and amen there mate ! ...but make the most of em cos it wont last !!:hahaha:.
My thought on the issue would be that whilst you may be running slicks, and I do want to give them a go.... you dont HAVE to try and drive to the limit of their adhesion... just to the point where your sphincter loosens up just a tad !!! .. I would take the same view as when I first started driving my CSL just a year ago .. take it a step at a time .. if you make a reasonable change to your usual driving setup ... give yourself chance to learn and appreciate it first ! ... once you have the confidence ... THEN give it the beans ..... and s**t yaself !!:hahaha:
+ 1 and amen there mate ! ...but make the most of em cos it wont last !!:hahaha:.
My thought on the issue would be that whilst you may be running slicks, and I do want to give them a go.... you dont HAVE to try and drive to the limit of their adhesion... just to the point where your sphincter loosens up just a tad !!! .. I would take the same view as when I first started driving my CSL just a year ago .. take it a step at a time .. if you make a reasonable change to your usual driving setup ... give yourself chance to learn and appreciate it first ! ... once you have the confidence ... THEN give it the beans ..... and s**t yaself !!:hahaha:
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