964-C2

Which compound are your 888's? GGG?

philooo

I have no idea , where can I see that ? On the side markings ?

LVDell

I have no idea what 964-C2 is referring to. Are there multiple compounds???

AudiOn19s

This. I'm lost now.

I had an early release tire way back which I was told was a JDM spec tire that had "GGG" printed on the sidewall, all of my research showed this was just a difference in the way they were labled not actually anything else different about the tire.

LVDell

I think there is only 1 "mainstream" compound when you order R888 but there are a couple special formulations denoted by a code (i.e., GG, etc) for specific race series spec requirements.

964-C2

I believe there are three compounds for the toyo r888:
GG = standard
GGG = softer (shorter life / less miles)
SG = softest (even shorter live / less miles)

911SLOW

Every set I bought was GG.

I don't think they ever made the wider 18" in any other compound.
The "GGG" & "SG" were only available upon request for smaller selected sizes. And mainly suitable for sprint events etc.

LVDell

Thanks John for the clarification.

997gt3north

Based on your pictures, and my own experience running these tires
- reduce your REAR camber to -1.6 (you can see the inner wear is higher than the outside wear)
- you need more front camber - you don't need -2.5 but -2 in the front with camber plates would be good
- i think you can also see very, very slightly higher wear in the center of the tire, i would recommend slightly lower temps with the r888s (31-33f, 34-36r)

As others have said, the tires have many sessions left - but you can see that the inner rear edge will go first so based on your current speeds - reduce that rear camber - the r888s have very stiff sidewalls and that is part of the reason

Rennthusiast

I support 996FLT6 in flipping the tires to even out the wear. My vote would be to flip regularly assuming dry conditions. I waited too long on my last set of 888's (the last 888's I'll ever buy) before flipping them and my 6GT3 was really loose for the first couple of sessions.

LVDell

I swap left to right but never flipped on the wheel as that would be insanely cost prohibitive. As long as your setup is spot on, you should have even wear across the face. The left to right wheel swap like I do allows me to balance out the side dominant tracks wear pattern. I number my tires so I can keep track of when I used them last and what side to move them to.

philooo

Dell can you explain your tire numbering process ? Do you keep a logbook ?

mdrums

GGG is the compound for R888. Actually according a few people I've spoken with at Toyo over the years is that the RA1 is also GGG compound but the difference is the R888 is an overall much stiffer tire and tread blocks are much bigger thus build up heat faster and more and heat cycle out faster.

LVDell

Absolutely. I use a silver sharpie (so you can see it against the black tire) and do three markings.

1. I put a single vertical slash very every session I drive on the tires so I can count HC's.

2. I put a mark of sorts (symbol, number, etc) that is the same for one front and rear and another different symbol that is the same for the other front and rear. Then I notate which side I placed which symbol so when I install them for the next event, they are on the other side.

3. I put an arrow pointing down at the valve stem so I can see if the tire moved on the rim.

911SLOW

Really in the US they are 3G?

Here most 996/997 Porsche sizes are 2G.
http://www.toyo.co.uk/tire/pattern/proxes-r888


Size Index Compound Code Tread diam Width Approved Rim
185/60 R13 80H 3G 2243009 5.0 549 186 5.00-5.5-6.50
185/60 R13 80H SG 2243010 5.0 549 186 5.00-5.5-6.50
185/60 R13 80V 2G 2251000 5.0 549 188 5.00-5.5-6.50
205/60 R13 86V 2G 2253000 5.0 573 209 5.50-6-7.50
205/60 R13 86H SG 2244030 5.0 572 212 5.50-6-7.50
225/45 R13 84V 2G 2311190 5.0 529 223 7.00-7.5-8.50
185/60 R14 82V 2G 2259000 5.0 574 188 5.00-5.5-6.50
205/55 R14 85V 2G 2280846 5.0 579 213 5.50-6.5-7.50
225/50 R14 89V 2G 2302101 5.0 580 235 6.00-7-8.00
165/50 R15 72V 2G 2302110 5.0 546 163 4.50-5-6.00
195/50 R15 82H 3G 2302619 5.0 572 200 5.50-6-7.00
195/50 R15 82V 2G 2302400 5.0 572 200 5.50-6-7.00
195/50 R15 82V SG 2302620 5.0 572 200 5.50-6-7.00
195/55 R15 85V 2G 2281900 5.0 592 203 5.50-6-7.00
205/50 R15 86V 3G 2303529 5.0 584 216 5.50-6.5-7.50
205/50 R15 86V SG 2303530 5.0 584 216 5.50-6.5-7.50
205/50ZR15 86W 2G 2303500 5.0 584 216 5.50-6.5-7.50
225/45ZR15 87W 2G 2311800 5.0 579 227 7.00-7.5-8.50
215/50ZR15 88W 2G 2303800 5.0 594 228 6.00-7-7.50
225/50ZR15 91W 2G 2303900 5.0 603 230 6.00-7-8.00
235/50ZR15 94W 2G 2304900 5.0 614 245 6.50-7.5-8.50
195/50ZR16 84W 2G 2305151 5.0 598 200 5.50-6-7.00
195/50ZR16 84W SG 2305152 5.0 598 200 5.50-6-7.00
205/55ZR16 90W 2G 2288900 5.0 628 213 5.50-6.5-7.50
215/50ZR16 90W 2G 2306000 5.0 619 228 6.00-7-7.50
225/45 R16 89V 3G 2316811 5.0 605 228 7.00-7.5-8.50
225/45ZR16 89W 2G 2316800 5.0 605 228 7.00-7.5-8.50
225/45ZR16 89W SG 2316821 5.0 605 228 7.00-7.5-8.50
225/50ZR16 92W 2G 2309000 5.0 628 235 6.00-7-8.00
245/45ZR16 94W 2G 2320218 5.0 621 248 7.50-8-9.00
255/50ZR16 99W 2G 2309220 5.0 657 269 7.00-8-9.00
205/40ZR17 84W XL 2G 2350400 5.0 598 212 7.00-7.5-8.00
205/40ZR17 84W XL SG 2350401 5.0 598 212 7.00-7.5-8.00
215/45ZR17 91W XL 2G 2320390 5.0 624 216 7.00-7-8.00
215/45ZR17 91W XL SG 2320391 5.0 624 216 7.00-7-8.00
225/45ZR17 91V 3G 2320621 5.0 634 231 7.00-7.5-8.50
225/45ZR17 94W XL 2G 2320610 5.0 634 231 7.00-7.5-8.50
225/45ZR17 94W XL SG 2320640 5.0 634 231 7.00-7.5-8.50
235/45ZR17 93W 2G 2320970 5.0 643 242 7.50-8-9.00
235/40ZR17 90W 2G 2351130 5.0 624 245 8.00-8.5-9.50
245/40ZR17 91W 2G 2351180 5.0 627 250 8.00-8.5-9.50
255/40ZR17 94W 2G 2351610 5.0 638 265 8.50-9-10.00
275/40ZR17 98W 2G 2351930 5.0 652 280 9.00-9.5-11.00
315/35ZR17 102W 2G 2382000 5.0 650 320 10.50-11-12.50
225/40ZR18 92W XL SG 2359301 5.0 638 224 7.50-8-9.00
235/40ZR18 91Y 2G 2359800 5.0 648 244 8.00-8.5-9.50
245/40ZR18 (93Y) 2G 2360900 5.0 653 250 8.00-8.5-9.50
255/35ZR18 94Y XL 2G 2389209 5.0 637 260 8.50-9-10.00
265/35ZR18 97Y XL 2G 2390100 5.0 646 274 9.00-9.5-10.50
275/40ZR18 99W 2G 2362600 5.0 678 279 9.00-9.5-11.00
275/35ZR18 99Y XL 2G 2390400 5.0 652 280 9.00-9.5-11.00
285/30ZR18 97Y XL 2G 2402990 5.0 631 288 9.50-10-10.50
295/30ZR18 98Y XL 2G 2403010 5.0 637 299 10.00-10.5-11.00
315/30ZR18 98Y 2G 2403100 5.0 648 318 10.50-11-11.50
335/30ZR18 102Y 2G 2403300 5.0 660 338 11.50-12-12.50
235/35ZR19 87Y 2G 2394900 5.0 652 240 8.00-8.5-9.50
265/30ZR19 93Y XL 2G 2410500 5.0 645 270 9.00-9.5-10.00
295/30ZR19 100Y XL 2G 2412100 5.0 661 298 10.00-10.5-11.00
305/30ZR19 102Y XL 2G 2412200 5.0 673 305 10.50-11-11.50
285/35ZR20 (100Y) 2G 2400300 5.0 704 291 9.50-10-11.00
315/30ZR20 (101Y) 2G 2414000 5.0 700 318 10.50-11-11.50