26th-Sep-21, 09:43 AM
Not really in a "range"
It's easier to think of tyres in terms of grip alone,
From very grippy to quire slippery but that is not really representing the whole story.
I have found, that with the right oil prep, on the right track , ultras and supers are unbeatable when used on on high power angle winders (eg an nsr mosler lightweight with a king 25k rpm motor) easily producing enough roadholding to cause understeer DeSlots on tight corners
Ultras and supers require truing, no way can these tyres be fitted and run without prep on a good truing machine.
Ultras and supers also benefit from light application of zippo during a race night.
Reds (and black reds) don't require high level of prep and maintenance and can be used week after week without reskimming.
Some even run these untrued and not glued.
A simple "on the axle" skim is all these require (if that)
However, red&blackreds appear to be easily overpowered By high power motors, tearing up the tyre surface.
I use reds on lower power cars, eg my sideways grp5 cars with flatsix yellow motors or on "classic gt" cars with small sidewinder motors.
Reds appear to give a more predictable "bounce" to the car (I can't really think of a better word).
Reds soak up track imperfections giving a more predictable and forgiving drive.
So, sorry to say there is no simple answer to your question
Just try to figure out which tyres work on which cars by experimentation.
Alan
It's easier to think of tyres in terms of grip alone,
From very grippy to quire slippery but that is not really representing the whole story.
I have found, that with the right oil prep, on the right track , ultras and supers are unbeatable when used on on high power angle winders (eg an nsr mosler lightweight with a king 25k rpm motor) easily producing enough roadholding to cause understeer DeSlots on tight corners
Ultras and supers require truing, no way can these tyres be fitted and run without prep on a good truing machine.
Ultras and supers also benefit from light application of zippo during a race night.
Reds (and black reds) don't require high level of prep and maintenance and can be used week after week without reskimming.
Some even run these untrued and not glued.
A simple "on the axle" skim is all these require (if that)
However, red&blackreds appear to be easily overpowered By high power motors, tearing up the tyre surface.
I use reds on lower power cars, eg my sideways grp5 cars with flatsix yellow motors or on "classic gt" cars with small sidewinder motors.
Reds appear to give a more predictable "bounce" to the car (I can't really think of a better word).
Reds soak up track imperfections giving a more predictable and forgiving drive.
So, sorry to say there is no simple answer to your question
Just try to figure out which tyres work on which cars by experimentation.
Alan

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