fc-racer

It's now available for purchase in North America. I've been doing research online from folks who've tried it and to summarize, it appears that it's as fast as the Hooser A6 right out of the box, but with better longevity. You give up the DOT certification of course with a full slick, but looks very interesting for the price: http://www.frisbyracetire.com/showpr...=2&subcatid=26



245/640R18 $367.20 ea
285/650R18 $367.20 ea
285/680R18 $428.40 ea
335/710R18 $479.73 ea

Are any of you trying it out? What's your impression of the tire? I may pick up a set to try out later this summer.

AudiOn19s

There was a thread on this in either the cup car section or the Racing section.

Basically compared to other slicks they were a good bit slower. I thought Toyo's claims were that they were similar in compoud to an RA-1 or R888 which SHOULD mean that they last quite a bit logner than most slicks.

The only comments in the threads were related to how slow they were, not to how long they lasted. I'd be interested to hear more on longevity but I suppose it's probably too early for that with as new as they are.

**edit** here's the link
https://rennlist.com/forums/racing-a...used-them.html

AudiOn19s

comments from NASA American Iron Racer

Spent a long time with them again this wknd

Bottom line is sticker session they grip a touch better than A6s but heat cycles beyond and they seem to drop to about R6 levels or so. Clearly will last forever though as10 heat cycles by now and several races and 4 wear holes barely look touched.

My judgement call:
Awesome hpde or track day tire. Also great for open tire classes if your willing to trade quicker laps for much longer life. And if they make a truly bigger size as the current 285 is narrower than a 275 dot Hoosier or big it could help some also in lap times
Also price is very right for a slick and contingency really good
So a solid yes but as usual no tire is perfect so compromise is always in the mix

RSRanger

You'll have to run the 285 for rears b/c the 335/710/18 will be way to tall.
That's almost 28" tall. I imagine clearance issues.

Ranger (Sua Sponte)

fc-racer

Thanks for the link. That's disappointing to some extent, but I guess this is the perfect 996/997 Cup DE tire. Lasts forever, consistent and about 2-3 seconds off the pace of a real slick, but still faster or equal to a Hoosier DOT.

The Greek

Really curious about heat cycles on this tire.

If I can squeeze 20, then I will be happy

AudiOn19s

Agreed it could be a great DE tire, but the sizing for even my car (996 GT3) is no good, even worse for the 997 crowd. They need to throw out a 305 or 315 in the middle but even then I have a feeling it will be a 680 or something that's just a touch too tall.

Doc GTO

They need to bring out more sizes . . .

85Gold

"The Proxes RS1 and the Proxes R888 street-legal motor sport tyre share the “GG” tread compound, that has proven to be highly competitive in a wide range of Australian motor sport events, providing competitive performance, fast warm-up and exceptional wear resistance."

Nuff said. Same compound as the R888.

Peter

mdrums

+1 and with that tall of a tire you will have even longer gears and none of us need that on a road course.

mdrums

RA1 is GG compound too.

Serge944

I'd just stick to NT-01s... Until you're ready to jump to a real slick.

NJ-GT

The 335 is too tall for a 997, it would require to drop the rear height 12mm to keep proper rake, at which point the car will lose a full 1" of suspension travel, and very likely the tire will hit the fender well under heavy compression. This tire could be used with stiffer springs, removing the rear fender liners, and trimming down some metal in the inside of the rear wheel well.

So, the rear tire that fits is a 285. With a tire width (per Toyo specs) of 11.1" it is as wide as the 1999-2009 GT3 Cup Michelin slick (labeled 27/68R18).

Based on the test done by Corey Friedman, I don't think this tire is as fast as the Hoosier A6. Coryf here in RL tested them in a GT3 Cup against used Michelin slicks, and they were almost 3 secs slower at RRR which is a small track, so at Sebring the difference would jump to 4 or 5 secs.

A6 are as fast as some slicks. I actually have higher G forces generated with the A6 compared to Pirelli slicks DH compound, but on different weather.

Here is the review by coryf ==> https://rennlist.com/forums/racing-a...?highlight=rs1

NJ-GT

This seems to be the difference found by NASA and SCCA club racers in regards to the current RA1 in production.

The current RA1 ages quickly, similar to the R888. People did not like the R888, and when many requests were sent to Toyo to get the RA1 back in production, it seems that the clever Toyo guys just molded R888 rubber on the RA1 shape, and the main reason the current RA1 don't last as long as the old ones, they get slower as they age compared to the old RA1 that got faster as they aged.

Some of the DE Cup boys are running old RA1, produced as far back as 2007, and this vintage production will run out pretty soon.

mdrums

NJ-GT...Although Toyo claims RA1 and R888 is same compound...I spoke to the rep on this at length I think from the way it was explained to me that the outer rubber may be the same but but how it's attached to the carcus and how stiff the sidewall is has a lot to do with it.