I was initially complaining about the lack of sizes for race tires. Specifically if you use 16" wheels, your tire sizes are limited to 2(which can fit the miniscule wheel arches of the 116 cars).
225/50/16 (almost all manufacturers)
205/45/16 (Kumho V700 ECSTA, Hoosier RS304)
The problem with the 225/50/16 size is that it is a little to tall for the car. The weight and the gearing penalty can really be felt. The 205/45/16 size is a little on the narrow side and the Kumho ECSTA V700 is not known for its longevity or outright grip.
However, recently on tirerack.com a new size has just come out
215/40/16 (Kumho V710)
This means gearing will be improved compared to using 225/50/16. It has also been said on other forums like rennlist.org, honda-tech, etc that the Kumho V710 is nearly as fast as the Hoosier RS-304 and lasts longer too. So this seems like a good compromise.
It would be nice to have the Toyo Proxes RA-1 in 225/40/16 (longevity, decent grip, low price), but that remains a fairy tale for now.
Those Kumho's look great - pretty hard-core 
I guess you would not be driving on the streets with those on?
I used these last season ... 215/45ZR-16 86 B ... and saw quite a few sets of these on track cars at Pacific Raceways.
http://www.discounttiredirect.com/direc ... d=16&ar=45
@ $102.00 ea, they are a good deal too.
Not quite as sticky as the more track orientated tyres I used in California, but a good compromise in my view.
I might get a set of track wheels/tyres again (16") and would then definitely consider a set of those Kumho's.
Cheers,
I guess you would not be driving on the streets with those on?
I used these last season ... 215/45ZR-16 86 B ... and saw quite a few sets of these on track cars at Pacific Raceways.
http://www.discounttiredirect.com/direc ... d=16&ar=45
@ $102.00 ea, they are a good deal too.
Not quite as sticky as the more track orientated tyres I used in California, but a good compromise in my view.
I might get a set of track wheels/tyres again (16") and would then definitely consider a set of those Kumho's.
Cheers,
Michael
1981 GTV6
1981 GTV6
Hi Mike,
I've used the Azenis before. Somehow it has a problem with heat cycles. Once it gets older (maybe after 2-3 track events) and you keep it on the track (in summer) for a few laps, the grip just isn't there anymore. And the grip doesn't seem to come back. Chip also observed the same problem. Maybe in cooler weather the problem isn't so apparent.
I have 2 sets of wheels and I think that is the best solution. For the street I have the Kumho ECSTA Supra 712 and for the track most likely I will get the V710.
I've used the Azenis before. Somehow it has a problem with heat cycles. Once it gets older (maybe after 2-3 track events) and you keep it on the track (in summer) for a few laps, the grip just isn't there anymore. And the grip doesn't seem to come back. Chip also observed the same problem. Maybe in cooler weather the problem isn't so apparent.
I have 2 sets of wheels and I think that is the best solution. For the street I have the Kumho ECSTA Supra 712 and for the track most likely I will get the V710.
I ha'd 16' wheels with Pirelli Pzero 205/45 before but they couldn´t give me the grip i wanted so i sold them and put on much lighter 15' wheels with Bridgestone re540 205/50 instead. The difference was awesome, both in grip and acceleration. No problems with my 286mm front discs and 4-pot calipers 
Kenth Wiklund
75 3.0 Challenge
75 3.0 Challenge