Review: my Toyo R888 vs R888R
04-02-2018, 05:16 PM
#61
04-02-2018, 06:37 PM
#63
Awesome. I'm about to add to that comparison next week. Mpss vs r888r vs Hankook rs3 on narrow body car. Stock tire size. Although r888 are very different from r888r
Last edited by BrunoTheMellow; 04-02-2018 at 06:38 PM.
04-02-2018, 06:45 PM
#64
Instructor
04-08-2018, 03:17 PM
#65
04-09-2018, 10:15 AM
#66
Instructor
Just did a weekend at MSRH with wife co-driving. 8 sessions combined lol! Oem front rotors are almost toast, but surprisingly cup2zp's held up after already having 3 COTA days (10 sessions). 1:46.3 best time if you're interested in adding that to your ledger.
04-09-2018, 11:52 AM
#67
Le Mans Master
Strangely my rotors are in great shape after 8 or 9 track days. All but one have been at either COTA or ECR, and both are hell on brakes. I run Hawk DTC 70/50 and all but 2 days have been on Cup2 or R888R. I've gone through a whole set of Cup2, MPSS and I have one day left on my R888R.
04-09-2018, 12:27 PM
#68
Instructor
Strangely my rotors are in great shape after 8 or 9 track days. All but one have been at either COTA or ECR, and both are hell on brakes. I run Hawk DTC 70/50 and all but 2 days have been on Cup2 or R888R. I've gone through a whole set of Cup2, MPSS and I have one day left on my R888R.
Last edited by archfarseer; 04-09-2018 at 12:28 PM.
04-09-2018, 12:54 PM
#69
Supporting Vendor
Have the r888 on the GTR and R888 on the c7..
Which tires were louder to you? the R888 in the GTR are louder than mud tires on my silverado..
BTW what bumper is that? Its awesome!
-Josh
Which tires were louder to you? the R888 in the GTR are louder than mud tires on my silverado..
BTW what bumper is that? Its awesome!
-Josh
04-09-2018, 01:06 PM
#70
Le Mans Master
You have about 7 days in on them, I have about 9, but one was in the rain so I guess that doesn't count. Another 2 were on street tires so basically no stress. I guess we're in about the same boat.
Getting 10 track days on a set of rotors using R-comps and serious brake pads on tracks like COTA is freaking great.
I think that some better rotors (directional vane) will help out a ton, too.
04-09-2018, 01:07 PM
#71
Le Mans Master
My R888R are really loud and have awful harmonics on the road
I really don't get why they have such big voids. 20-25% of the damn tire has to be tread. If that tire had a tread pattern similar to a Cup2it would be perfect for track days.
04-09-2018, 11:05 PM
#72
Instructor
Has anyone tried the 325/30/20 on the rear of a stock z06 wheel? Curious how traction is on the street with that size.
I currently run 345/30/19 r888 and have 0 traction issues but I would prefer to switch to the 20 inch wheels if the 325 would hold traction.
I currently run 345/30/19 r888 and have 0 traction issues but I would prefer to switch to the 20 inch wheels if the 325 would hold traction.
The following users liked this post:
AZGASSER (04-09-2018)
04-10-2018, 10:09 AM
#73
Race Director
20" wheels are for looks, not straight line performance. If you want SL traction, go 18 -17- or 15.
04-13-2018, 05:24 AM
#74
Size first (from actual measurements in my garage):
285/30r20 MPSS ZP: section width: 11.5", tread width: 11.0"
285/35r20 RS-3: section width: 10.88", tread width: 10.13"
295/30r19 R888R: section width: 11.75", tread width: 11.25"
245/35r19 MPSS ZP: section width: 9.93", tread width: 9.43"
245/35r19 RS-3: section width: 9.50", tread width: 9.00"
255/35r18 R888R: section width: 10.25", tread width: 9.75"
Note the huge difference in width between MPSS and R-S3 which should be the same.
Lap Times:
I ran the MPSS when I was fairly new to track driving. The best I got at MSR Cresson was 1:25.46. I also was running factory alignment that was -0.5 on all 4 corners, here is the video:
On the Hankook R-S3s, the following track day, I could only manage a 1:27.28. Through a couple of track days I improved that to a 1:26.07, here is that video (last lap of video). Note that I now had a DSC sport controller also. That's a 1.2 second improvement overall from day 1 to last day on the tires.
On the Toyo R888Rs I ran a best of 1:23.43, however my car was having misfire and power loss issues at high rpm. Note that I now have the DSC sport controller and z06 stage 3 aero. Here is that video:
If you watch the MPSS video vs the R888R video you can see I am losing 3-5 mph on every straight on the latter.
In conclusion, strictly speed-wise, my theoretical best laps if i ran the tires side by side:
MPSS i could probably hit 1:24.0 if you subtract the improvements I made while on the R-S3s and the fact that I was running straight-from-factory alignment that day, no DSC sport controller.
Hankook R-S3s I could probably hit 1:25.5 on a perfect lap.
Toyo R888Rs I could likely hit 1:23.0 with no engine problems.
I think most of the reason the MPSS are fast is their actual width advantage over similarly sized tires. I was very suprised at how much abuse the R-S3s took and how many track days I was able to get of them. I definitely overheated them a couple times too. I've only ran the R888Rs once and only 2 sessions total but damn they are good tires! Specially combined with stage 3 aero and a DSC sport controller. At -2 camber front, -1.7 camber rear, 0.05 toe, proper caster, the car was PERFECTLY balanced, no understeer, no oversteer, just 4 wheel slide.
Last edited by BrunoTheMellow; 04-13-2018 at 05:29 AM.
09-01-2018, 08:32 AM
#75
Pro
It wasn't too long ago that I found myself not pleased with the lack of traction my Z had.
Luckily, I discovered the Toyo R888, which ended up being perfect tire for me as they provided huge traction yet retained the sports car level of handling that the Z has.
Link to my R888 review
https://www.corvetteforum.com/forums...06-review.html
When I heard the Toyo R888R were available , my rears happened to be totally cooked, threads where showing, but my fronts were still very much alive, still I changed all 4 tires as I wanted to experience the new Rs to the fullest.
These tires are the best I've experienced in my 10 years of street driving corvettes. (Nitto Invo, Michellin Sport Cups / Super Sports , RE-11s , Kumho XS)
The magic in the R888R is that you get the same awesome grip (could be even better) as the old R888 (non-R) but the R also retains the razor like handling by having a stiffer sidewall then the old R888.
As I mentioned in my R888 review, the R888 tires are soft, much softer than the cups or whatever came with my car. What I ended up doing, and I have no idea if this was the right thing to do, was I electronically hardened my suspension to compensate for the softer tires.
I have a DSC controller, I up-ed the hardness setting and got back some of that razor sharp handling that I liked from my stock Michellins.
With these new R888R the sidewalls are much stiffer, that in tandem with my old DSC settings and I basically have the best of both worlds, I can dead hook anywhere at any temp and have the same handling as the Michellins.
Also as a bonus the R888R are really smooth, Im not sure what those Toyo did, but this tire rides really nice, not quite as nice as say my Nitto Invos , but for this level of performance , the smoothness is rather surprising. Kudos Toyo, really nice job
R888Rs like their predecessor still can dead hook in the cold, maybe even better and Im talking California cold, so 40+, Im not ice skating with these... although Id probably try if I could.
About the noise... its still there.
Those who have had the R888 have complained about the noise they make, my first set, weren't very noisy, I read somewhere that they are supposed to be 50% quieter than the R888. Well there not, they are def quieter but not 50%, I would say 25% , still big improvement.
Anyway, if you want more traction at any temp with really great handling get these, they are amazing!
PROS
Perfect grip for higher horsepower applications
Tires do not need to be warmed up, ever (Im at 700HP, not at the wheel)
These new R888R make considerably less noise than their predecessors
Stiffer sidewalls make this tire handle very similar to stock michelins
Really smooth ride, and I always keep my car on track
CONS
They have a little noise to them, but at this level, it's irrelevant (to me anyway)
How long do they last?
Thats always a tricky question, potentially lots of variables here
I keep my vitesse controller on 7-8 which always keeps the car peppy I primarily run canyons, which I do alot, I go out almost every night, I average 9K a year, and all those miles are night miles, I have other cars for daily driving. To be honest, Im very surprised at how well the r888 did, they wore no faster than my Michelins , not only that but they wore more evenly. That may have something to do with my configuration, I had my shop match my suspension to DSC specs , I have -1 camber maybe more I forget, on each wheel, Ill post my specs later. You can probably get 8-9K on a set with spirited driving. Obviously this excludes any sort of track time, I only went to the track once with my r888, and I could tell my tires took a beating that day, even though I wasn't trying to get a fast time, I was actually there to monitor/validate some cooling mods I did.
I have Vitesse too; using mostly SP5/6 with my Z06.
Lastly, Interested in the cooling mods testing you did. I am looking at expansion tank for inter cooler and various heat shielding for Cats and Exhaust.
Last edited by 2FAST4U; 10-21-2018 at 12:11 PM.
10-21-2018, 11:53 AM
#76
Pro
This is what I went with
345 30 19
295 30 19
but this is NOT what you should do, the fronts actually rub a little ,its really minor, and I run that way, next set Ill be going 18s in the front. That would be the perfect size. New rims will be required
8-9K with the rears , 9-11K with the fronts , interestingly enough, with my Michelins , by the time I was done, all 4 had to be replaced at the same time, with these the front 2 are still pretty good. Im keeping them as spares.
345 30 19
295 30 19
but this is NOT what you should do, the fronts actually rub a little ,its really minor, and I run that way, next set Ill be going 18s in the front. That would be the perfect size. New rims will be required
8-9K with the rears , 9-11K with the fronts , interestingly enough, with my Michelins , by the time I was done, all 4 had to be replaced at the same time, with these the front 2 are still pretty good. Im keeping them as spares.
First of all awesome thread and information. I had been looking for that ultimate street tire and after much research landed on Toyo R888Rs for these reasons.
1) Good lateral and straight line grip in all temps above 40 degress
2) Rears come in 325x30/19 which are same size as 335x25/20. I am getting Z06 replica 19x12 wheels for rears @$550 shipped. And BTW, the 325x30/19 are $65 cheaper per tire than the 345x30/19’s, and 325’s also tuck a little more so debris from tires do not impact body as much.
3) You can run different tires on front from vendors such as: Toyo, Continental, Michelin, Nitto and other. This can cut the noise greatly because you can have quite on front and noisier R888R on rears. The noise sources in front of the car you hear much more! I am going to try keeping Original MPSS on front, but will be prepared to replace if combo is working for some reason. If this combo works it could be the best street set upI won’t know until spring 2019 because I just got my Z06 August 2018.
If this tire setup above works, only 1 additional possible mod will be done and that is the LPE stage I. That mod is simply different pulley, filter and tune for 720hp. This setup will be essentially max “streetable” performance in my mind. Meaning I don’t need to wear DR tires on my daily driver and I don’t track or DR the car.
With respect to item#3 if anyone has experience or thoughts running Toyo R888R with different fronts, please let me know.
Last edited by 2FAST4U; 10-21-2018 at 12:09 PM.
