512bb

Has anyone run the Toyo Proxes R888R on the 997 turbo in the following sizes F: 245/35 ZR 19 and R:325/30 ZR 19 (or any size for that matter)? Any thoughts or comparisons to Michelin Cup 2's in the same sizes?

Street and track feedback will be greatly appreciated. Thanks in advance.

Southpaw

I have ran both. The Toyo R888R is a better track tire but the PSC2 is a better all around tire which will also see street use.
The Toyos need heat but once warned up, are stickier. Main downside is they're LOUD.
PSC2 is not as sticky or not as hardcore of a track tire but are better on the street... Quieter, better in the wet.

MadScience

The other contender in this space is the Bridgestone Potenza R71R.

I'm between it and the R888R for my next set. Does anyone have any comparisons between those two?

Bradinthe56

I don't have comparison, but did run new R888Rs at a HPDE event last weekend. The track was wet all day, with heavy rain during my last stint after which the rest of the day was cancelled -- lots of pooling water at a couple of critical apexs. Even when the track was really, really wet the tires did very well given their tread pattern. I'm sure it helped they were brand new, but they were easy to read, held traction surprisingly well when cornering and during hard braking.
I'm looking forward to running them in the dry.

512bb

Thanks Southpaw and Bradinthe56 for the feedback. It's good to know the rain characteristics and surprised that they were that good. I love, love, love driving in the rain and that was one of my questions. Interested to hear your feedback when you drive it in the dry.

MadScience

That general tread pattern works surprisingly well in the wet. I've run Dunlop Direzza ZII star specs on a different car, and they did better in the rain than p-zero's or the michelin's, of the time.

Disclaimer: I've not yet tried that Toyo.

512bb

MadScience I can see the Dunlop Direzza ZII evacuating the water quite well as it has those two circumferential (if that's a word) grooves, which is what really evacuates the water. BUt that's interesting that they better than the P-Zero's and the Michelins. Now I definitely want to try out the R888Rs........

Southpaw

Enemy forum but this is a good writeup.

https://www.corvetteforum.com/forums...-vs-r888r.html

Of course, take it with a slight grain of salt since the Corvette is a totally different car in terms of behavior but certain points would be helpful. I learned it has a stiffer sidewall than the R888 from this post.

512bb

That was a great write-up and super helpful since I also have a C6 Z06 that is also highly modified and used/abused on the track and the road. Thanks again.

Nein97_shaun

Im running 335/30/18 on my 997 with no problems so far im loving them

MR DW

Underground racing uses the Toyo R888 on all of their builds. If it is good enough for a 1500HP Lambo, it will probably work well on our cars too. Tons of grip and streetable, but get loud as they wear down.

512bb

UR cars, especially the Lambos are straight line cars, but it's good to know that they run them on the R888. That's great traction!

Bradinthe56

Thought I'd provide an update on my R888R experience. Overall, I've been very happy with the tires which are on a second set of wheels and only used for HPDE days. They have worn well through the 8 sessions I have on them. I drove them to/from HPDEs, anywhere from 50 miles to about 250 each way. Alignment is -2/-2.5 F/R with .02/.04 degrees toe F/R. I'd go out on my first stint at 28F/32R and came in with hot temps in the range of 35-38/40-42R with pretty even temps across the front and across the rear tires. I have found them very progressive on breakaway and very able to use all the braking my C2S can muster. I drove them to/from HPDEs, anywhere from 50 miles to about 250 each way. There's been a lot written about heat cycles, wear, etc. My experience: cycles or not, they 'went off' on the afternoon of my 8th HPDE event. How did this show up? It was a two day event, the first day I was lapping consistently in 2:05-06 range, and then with maybe 3 stints to go on the second day, laps went to 2:10-11 range. They tires remained very consistent in how they felt and performed, just not as much grip or braking capability.
I'd buy them again, but half the fun is trying a new tire and learning how it drives. With that in my frame, I'm thinking of giving the Hankook RS-4s a spin. Stay tuned.

o7silverturbo

Im running the R888R and I love them. Good traction even at high horse power. Ride is good as well

Dguth

I was thinking of getting these but stuck with my trusted Potenza RE-71Rs. Anyone else using these on track days? They talk back a lot which I like, especially when about to break away.