c0777

Hi there guys, been following your job in corvett fórum, great forum!!! i have a question(sorry maybe this question is already here). I love how my R888R tires Works on my other cars and will love to use on my Z06 C7.

I have seen this front 285/30/19 stock and so im thinking to get the size 265/35/19, add for the 335/25/20 fit the 285/35/20. Any suggetion?. Do you think it till work?.

Regards,

robert miller

Those two tires is to much off I am thinking your will get a code & a brake paddle pushing back at you when you put the brake on r push the brake down.

c0777

Thanks Robert!!! what size do you recommend on the R888R/R888, or what tire! my michellin honeslty doesnt work well here. I was thinking on continental extreme contact dw too.

Thanks a lot for your time and fast reply.

The HACK

275/35/R18 front, 325/30/R19 rear is your best bet, assuming you don't have Z07 package with CCCM rotors.

c0777

Thanks!, im using stock wheels and my car doesnt have ceramic brake package

rb185afm

I just ran a set of 285/30/18 & 335/30/18. Worked great other than I used half the tread in 3 20 min sessions. Your going to need some after market wheels. Bright side is I just picked up a set of triple 8’s in 18’s for $1200 shipped. About $600 cheaper than the same tire in 19/20’s.

X25

To manage tire wear, you can consider using 315/30/18 at the front. That size works great on my car as front tire.

BrunoTheMellow

​​​​​​How.... Did you wear them so fast Jesus.

X25

+1, let us know what you figured out, and what your setup is like, including alignment and cold/hot pressures.

Whenever premature wear happened to me, it ended being either alignment issue or too low pressure, overheating the tire.

Good luck!

The HACK

fatsport

Ltrain925

rb185afm

I normally run 315/345 R7’s. I wanted to try a good street tire followed by similar sized 285/335 R7’s. I’m experimenting with set up and tire feel. My triple 8 wore the center of the rears out faster than the edges. They are still good to go, but I was shocked how fast the center wore down. I only ran them 3 sessions to get a feel as they are my street tires. I do run with no TC at a decent pace and slide a lot. Overall the triple 8 worked about as well as heat cycled out used R7. I put 285/335 R7 on after the triple 8 at the same event. The car gets slight understeers characteristics, as expected, with stock size rubber up front. The difference in grip going to 315/345 is very apparent, and the characteristics move to slight oversteer. This is with a locking camber kit and Mono Ball bushings running -2.5 camber front and -1.5 Rear.

My take away, even used heat cycled R7 have more grip and last longer a new triple 8R. At lest how I drive with my set up. No shock, but good for my brain to understand the effect.

The HACK

rb185afm

I agree, however I will not be running triple 8. Just wanted to feel them. My set up is working perfect with R7’s, so I won’t be investing time solving the problem.

X25

The abnormal center wear might indicate too high pressures. Did you monitor the tire pressures during your runs? R888 was notorious with sensitivity to tire pressures on how it behaved. If it shot up to 40+ PSI, for instance, it could have caused more wear at the center.

I'll be testing out brand new 315/335 R888Rs myself at the track, this weekend, and will compare to brand new 295/315 RRs. I just wish we had a 335/30/18 size on RRs : )

X25

Glad to be of some help : )

It does work. C7 in general is much less sensitive to diameter differences than C6.

The only issue that I've ever seen regarding diameter was when I tested out 285/30/18F 295/30/18R Hankook TD221s: I noticed traction control being too sensitive on touring mode. It did not impact track / competition mode, however, so it was a trivial issue for me. In any case, I've never seen any error message, etc.

rb185afm

I started 26 cold and was at 34 to 35 hot.

robert miller

I am running the same size here in R888R

village idiot

Yeah, R888R kinda suck due to temp sensitivity and having crappy traction (for what they are). Unfortunately, I can't think of a better tire for a reasonable price that I can drive to the track on.