Vince964T

Hi

Looks like I am back soon in Cup ownership after a 3 years break.
I was thinking about a late 7 with paddles and ABS but will settle back towards a 6. I loved my previous one, selling it was a mistake, and a 7 feels a bit to much for a driver with no track assistance.

I have this idea that may be I should try the 6 Cup I am buying on R tyres to keep the costs down.

Any one has done it or is doing it ?
What tyres are you going for (I am leaning towards TropheoR, no Hoosiers in EU)
Did you swap springs only ?
Just soften up the damper settings ?
Or swap to aftermarket suspension to get a softer setup ?.

The 6 Cup on R tyres would fit well in a local racing series. I also plan some track days and may be some timeattack. And my bet is the car would run "for ever" (everything is relative ) on R tyres. Cheap on tyres, brakes, drive train, suspension components... Win win except the thrill of the slicks of course.

Any thoughts or tips ?
Thanks

Juha G

A good friend of mine has a street registered 6CUP in Germany. He mostly drives it on the Nürburgring tourist drives and track days (hence the plates)
He has swapped the original shocks with KW club racing. The springs are much softer too. It works really well.
I don't think it will be good with the original springs and shocks though.

He used to run Kumho V70A 90 hard compound in 265/35/18 front and 305/30/18 rear, whose widths are almost identical to the 24/64/18 and 27/68/18 Michelin Slicks. Just that the rear tire is much smaller in diameter so the gearing is shorter too (and less traction of course).
Too bad Kumho doesn't have a street legal R compound tire for 2017 season anymore.

Vince964T

Thx Juha. Makes sense with suspension swap.

About the tyres TropheoR max size on 18s is 295, may be a stretch on an 11' rim...

I like the Tropheos on my other cars. To bad.

Steve113

By the time you change suspension not sure you are really saving money ?
I used Toyo Proxi slicks a couple of times . Very inexpensive and they worked well with my set ups. They are harder so slower by a couple of seconds over Pirelli . Great to get seat time with though

Viperbob1

Stay with slicks. We have gotten 25 heat cycles out of a set and they were still better than Rs.

Vince964T

Depending on how much driving you do you are fast in the money. Suspension swap will cost the equivalent of a few sets of slicks and I don't need Öhlins TTX. A mid range 2ways kit would do.

The race series I am looking at is on Rtyres. Slicks not allowed.

Thx for the feedback, I just "need" to be reasonable and settle for that... When all I really want to do is drive on slicks ;-)

spiller

I run my street car on Cup dampers with slightly lesser springs and it's perfect with R compound. Something in the range of 1100 pound springs in the rear and 900 in the front. I would stick with the slicks though.

chrcook

I've raced a 6Cup in SCCA T1, which require R compound. It certainly can be done, even without major suspension replacement. Ran 255 front, 315 rear, Hoosier A7, however, the biggest issue is the low sidewall vs. the slick results in less air volume with results in a pretty big PSI change cold to hot. I'm seeing 12-14PSI rise in the rear, which means I have to run the pressures really, really low at the start of a race. Tried nitrogen to fix, but never could evacuate the tire to get pure enough nitrogen with my current equipment. If you are doing DE's and such, not a bad options.

However, I've gone back to slicks as I'm tired of fighting the physics associated with less tire volume in the rear.

Interestingly, the A7 provided much, much more turn in bite than the slicks, especially on tight tracks. Overcame that left foot braking and more trail brake. Still perfecting, but really cool feeling when I get right.

Vince964T

Ok a plan is shapping up...

Drive on harder slicks to start with. Any one has tried the Michelin hard compound ? ViperBob 25 heat cycles sounds good to me... Was it on Michelins or Pirellis H.

When I decide to re-launch may hugely successful race career re-spring and go with R Tires. The car would be perfect in the category I am looking at. Likely to be quite competitive.

You guys in the US have a much wider selection of tyres than I do here in a small country. No hoosiers, no Nitto, no Kumho etc...

Rickard 993 Turbo

It can be made... I have done it..

What class are you thinking to enter, NTA or TA,nu

Vince964T

Hi there !

PCSR. Fastest category on R tyres is 3 KG/HP minimum, new for 2017. I would be quite close. Would need minimum weight of 1170Kg. Should be easy to "max out".

Time Attack, if I use the CUP it will likely be in NTA. The 996CUP is to old/slow to be competitive in TANU. If all goes well I ll take the GT2 out for TANU a couple of times. With better set up that I have now and on Tropheos I can hope for top 5 in Prostreet (or what ever it's called) category on a good day ;-)

ir_fuel

Forget 25HC with Pirelli. I can run them for 2 days @ Spa, and that's 6-7 sessions a day. In the afternoon of the second day I see a 4 second drop in lap times (and the behavior of the car changes too). That's with DH rear / DM front on a 996 Cup.

Unless you are doing endurance driving/racing, you won't win anything by going for hard compounds. Your slicks will die from heat cycles long before the rubber runs out.

Vince964T

Ok... no free lunch I guess !

ir_fuel

And might I add: new slicks are like drugs ....

Juha G

just more expensive.