RonD

No I have not done a track day yet. The wheels arrived 2 days ago. I have them on the car and have done some street driving. My next scheduled track day is July 11, but may try to do a half day at Laguna this Sunday. So far they feel great. I will certainly post a report after I get a track day in.

RonD

Only got one session in today with the 255/35/19 and 305/30/19 RE71R due to a nail in tire and damaged side wall. But the setup felt good. Balance is better than my previous tire Cup2 combo 245/35/20 305/30/20. Definitely no issues with PSM etc.

I would have liked, of course to have spent more time with the new tires, but I'm quite sure I'm going to like this setup. My guess is they will be slightly faster than Cup2s. I felt like I was taking it easy, warming up the tires, getting a feel for them, but I still had, for me, a decent lap time. Couple of 1:40s.

Just ordered the replacement tire. Hopefully it will arrive before my next track day on the 17th and I will get in a full track day.

o2bcdn

Sorry to hear about the bad luck. Great to hear about your experience with the tires...really looking forward to the full report!!

erko1905

Thanks for the thread and everyone chiming in, very useful.

I've been running 255/35-20 & 305/30-20 MPS4S on the half inch wider (9 front, 11.5 rear) Sport Technos on my 1.1 C4S, and through two events, NJMP Thunderbolt & Pocono, it worked out fairly well (Pocono layouts that use a lot of the oval are very hard on gear). This is with the stock control arms, front camber maxed out. Pagid RS29 yellows & Motul 600. Front rotors look almost shot after two weekends, will look into Girodiscs right after those.

So it seems like we have two approaches with regards to going down to 19s, the 255/35-19 F & 305/30-19 R approach (keep the width) or the 245/40-19 F & 295/35-19 R approach (keep the diameter).

Eventually I do want to move to proper track tires myself, but there are absolutely no options at the size I'm currently running, except fairly dated Pirelli Corsa System, probably last of that inventory. So the next option is going down to 19s, get a lighter wheel, reduce some unsprung mass, but it seems like I have to choose either width or diameter.

I have a feeling I'd rather keep the diameter the same and get more sidewall, but what are the thoughts on pros & cons on those two sizes? Does one have more options available for it on a regular basis? (Toyos, Nittos, Hoosiers etc - eventually for when I have the skills to rock that stuff )

mdrums

Getting my 2017 GTS ready for the track in a few months....thinking of sticking with stock 20" tire size in Sport Cup 2's but the RE71R in 19" size 255/305 would be awesome too. I have Rear wheel Steer and it seems up in the air if 19" wheels or maybe just some manufactures wheels in 19" fit.

Deffintly doing front Giro Disc rotors...everyone I know keeps saying do the Race Tech RE10 pads though but I use to do Pagid Yellow/Black combo on my 2012 GTS. Also Tarret clapper studs.

Is there any advice or trick to installing caliper studs?

strandolph

I just followed instructions - nothing to it. Just blow the carrier threads out with compressed air prior to installing the studs. And make sure you buy the correct length studs for the Giros.

BradB

I'm a Pagid user, also. Quite happy with them. I couldn't justify the Giro Discs. The math didn't make sense for me.

The Tarrett studs are awesome. Simple install with basic tools. You may want to use a wire or coat hanger to hold the caliper up out of the way. And loosen the wheel sensor attaching point on the upright to give yourself more room to move the caliper out of the way.

Jabs1542

Girodisks come with the longer studs, the proper length for the 991 (assuming you bought the correct set for the 991).

mdrums

Thanks! I used to do my own brake jobs (rotors/pads/flush) on my 997.2 GTS....I will probably remove the sensors clip and solder wires together so I don't have to mess with them. I did that on last 2 cars.

mdrums

Humm...good to know I won't have to buy caliper studs then...very cool!

arter

Don't need to solder the sensor wires together, just twist-tie the sensor out of the way. That way its still available if you go back to stock pads.

Jabs1542

Exactly what I did.

Jason @ Paragon Products

For those with PCCB, we now have the Pagid RBD discs for direct replacement.

Front

Rear

mdrums

just twisting the wire together and taping it...it comes apart with the heat and all. You don't need to use the sensors with the stock pads.
Twist and solder then heat shrink wrap so all toy have is the plug and a nub of wire....nice and clean.

BradB

Yep, this works for me, too. Been that way for 4 years so far!