Trackday tyres
Joined: Apr 2001
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Originally Posted by lower,Sep 28 2005, 08:07 AM
can't imagine that the noise is going to be to extreme if i use them for trackday tyres only.
my query relating to the size thing is that the standard rear S02's have very narrow rain channels, hence more rubber on the road and hence the requirement to use a 245 section if going non S02.
the A032's look to have very little tread full stop. hence the question.
my query relating to the size thing is that the standard rear S02's have very narrow rain channels, hence more rubber on the road and hence the requirement to use a 245 section if going non S02.
the A032's look to have very little tread full stop. hence the question.
Virtually all track tyres don't have as much tread as a "road tyre" even when new.
The whole track tyre issue is a bit more complex than, more or less tread/rain channels/more rubber less rubber, what will be good on one car will be not necessarily be good on another.
You have to look at such things as rear wheel drive/front wheel drive, weight of vehicle, type of suspension set up, what type of track usage and more.
Before you decide I would get a lot more involved in collating info.
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From: Saarf London
I have a set of 16 inch S2000 trackday wheels and tyres that I experimented with.
Front 205/55/16 Toyo R888's
Rear 225/50/16 Advan (Yokohama) A032R's soft compound
I stuck with the 225 rears because the grip of the A032 is beyond question, even with the smaller contact area (visibly noticeable) they are far superior to standard tyres on dry roads but boy do they wear quickly, like any of Yokohamas tyres.
The other advantages of this are, less roll on the sidewalls and slightly lower gearing when on track days without faffing about with diffs (though obviously not to the extent of a diff ratio swap), due to a smaller rolling radius.
The sidewalls are already much stiffer than standard road tyres anyway.
The Yoko's are road legal but hopeless in the rain, though they will just cope with the damp. I struggled to pass a CRX on a wet track because everytime I booted it the back would let go.
Some say the soft compound is better suited to cars below 1000Kg but I haven't had a problem, but then again I have never got the chance to test them on a hot dry day.
The Toyos are fantastic tyres and actually quite hard for track tyres so wear rates should be ok, though mine are too new to tell yet. Again road legal and they behaved well on a moderately wet road journey, despite the disclaimer they come with.
If I did it again I would probably try R888's all round but a 205/245 combination, as they felt more surefooted in marginal conditions but are probably a little less grippy than A032's in full dry weather.
The R888's were phenomenal under braking on a damp/wet Castle Coombe circuit,
and pretty tenacious grip on the dry roads but as with the A032s not tested on a full dry track. I'm hoping the Ring before the season ends but time runs out so fast when working.
Front 205/55/16 Toyo R888's
Rear 225/50/16 Advan (Yokohama) A032R's soft compound
I stuck with the 225 rears because the grip of the A032 is beyond question, even with the smaller contact area (visibly noticeable) they are far superior to standard tyres on dry roads but boy do they wear quickly, like any of Yokohamas tyres.
The other advantages of this are, less roll on the sidewalls and slightly lower gearing when on track days without faffing about with diffs (though obviously not to the extent of a diff ratio swap), due to a smaller rolling radius.
The sidewalls are already much stiffer than standard road tyres anyway.
The Yoko's are road legal but hopeless in the rain, though they will just cope with the damp. I struggled to pass a CRX on a wet track because everytime I booted it the back would let go.
Some say the soft compound is better suited to cars below 1000Kg but I haven't had a problem, but then again I have never got the chance to test them on a hot dry day.
The Toyos are fantastic tyres and actually quite hard for track tyres so wear rates should be ok, though mine are too new to tell yet. Again road legal and they behaved well on a moderately wet road journey, despite the disclaimer they come with.
If I did it again I would probably try R888's all round but a 205/245 combination, as they felt more surefooted in marginal conditions but are probably a little less grippy than A032's in full dry weather.
The R888's were phenomenal under braking on a damp/wet Castle Coombe circuit,
and pretty tenacious grip on the dry roads but as with the A032s not tested on a full dry track. I'm hoping the Ring before the season ends but time runs out so fast when working.
nice
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