Have Speedfilm for the front of the car too. I remove rubber immediately after the track (or sometimes between sessions) with the Turtle Was Bug & Tar stuff:

 

My front end is wrapped as well and then I have CQuartz Finest on top of it.

Helps but I don't leave the rubber on there either after a track day for the same reason.

 

Apologies HotHonda, I just did some online search and WD40 has been used by many to clean similar stains as indicated above. WD40 also details on their website it is safe on painted surfaces.
Money, it wasn't a typo, but again I stand corrected.
I'm 0 for 2, lol.
Thanks guys.

 

Any more feedback on the AD08Rs on your CH-Rs?

Trying to figure out track set up.

Your CH-Rs are 19x9 and 19x11 or 12?

 

Ha..ha...No worries man. Thanks for contributing.

 

Can't check right now, I left the CH-R's at the tire shop, but I think they are 19x11 at the rear.
Preliminary AD08R review in the next post

 

Preliminary review of Yokohama AD08R

Quick recap: I was looking for a versatile track tires set and wanted to stay on street tires this time: 3 hour drive to Barber MSP, should be able to handle rain and dry, hoping to get more life out of the tires and wanted to re-assess my car control skills with non R-comps.

The two days we spent at Berber MSP two weeks ago have provide a relatively wide range of weather conditions: heavy rain to light rain to almost dry track the first day, 100% sunny, dry and warmer the second day.

Under the rain: the AD08R always did OK, but the Michelin PSS's are a superior tire from what I remember (better grip and feel). R888's are not the tire of choice in these circumstances, so the comparison is not fair.

The AD08R shows its (slight) superiority over the Michelin in the dry with a bit more grip and, more important, a better consistency through an entire track session. A number of us have experienced that the PSS is getting a lot more 'greasy' after 15-20 mins. The AD08R lasts longer from that perspective even though it starts showing a drop in grip over time (especially during 60 min sessions...). It also seems like the AD08R may take a bit more time to get at temperature/pressure, but this may be completely subjective.

When you oversteer, the AD08R is perfectly controllable, but, again, the PSS is smoother and even more progressive.
The good news was about understeer. I never felt it was a concern, but I could feel that the car turned in a little better. Maybe a combination of wider front tires and better grip.

Do not get mistaken though, the AD08R is much closer to an excellent street tire like the PSS than it is from a R888 on the dry. The grip of the R888 on the (dry) track is MUCH better. Nothing surprising there.

On the street, the AD08R is a good tire, but more harsh and noisy than a PSS is. No issue for spirited driving, but the Michelins are more comfortable for daily driving. I also have the feeling that they are more accurate even though the sidewalls are not as stiff.

Here are a couple of pics of the AD08R's after the week end. I am down to a bit more than 5mm tread depth which means I should still be able to use them for 2 days (very aggressive & hot weather) to maximum 4 days I think. This would not make them last a lot longer than R888's in fact.





The wear was relatively even on all 4 tires, but the AD08R' showed a straight scar on one tire and lost a good chunk of rubber on another. Nothing dramatic though (not as visible or bad in reality compared to the pictures).






I tried to summarize my impressions in the following table. Remember that is is largely based on personal experience of different set of tires at different times... and that I am no expert at all.



In brief, and unless the Yokohama's prove to last longer, I would rather stay on PSS on the street or in the rain at the track and keep using R888 on the dry.
The PSS remains the best all around tire, but the AD08R is indeed a bit more track oriented. Enough if it is your only tire set and you track the car frequently, but if you are going for a dedicated track set and you think you have accumulated enough experience on street tires, go for R-comps.

My 0.02 so far...

 

Great review thanks!!!!

I'm a little surprised your wear rate is that high, got some friends that run them on their M3s and they get almost a full season out if them. Maybe they just slower then you, lol.

Thanks again for the info.

 

The 991 is the cause of all this. I keep finding the car more amazing each time I track it. Here's a short clip (1 1/2 lap) with my 991 following a friend's black 991. Bear in mind it is a DE, not a race and that everybody is going at its own pace. Still, the car is fast, planted, has a ton of grip (even on street tires...) and simply navigates anywhere on the track without a fuss. Tires (and brakes) are the price to pay for it
PS: nothing new also to the fact that the wear is highly dependent on the track: I only used 1 to 2mm of my RS29 pads at Barber. I would burn twice as much at least at Road Atlanta on a fast week end, especially because of the back straightaway where you get to 150mph+ and can not carry much speed in the next turn (10a).

 

Serge, you make it look too easy! LOL Nice driving for sure!

 

Wow, great bit of driving! Love that video!

 

Could it be the PDCC is causing more tire wear? As its keeping the car more flat and it transfers that energy to the tires….hmmmmmmm

 

Interesting assumption. According to Porsche, you get better lap times (or let's say you go faster as you are not running hot laps at a DE) with PDCC and something has obviously to give. Now I would have thought that even if the PDCC causes more tire wear, it would also wears the tires more evenly which in turn could be beneficial...
I am speculating way beyond what I could ever prove or demonstrate
Still, I am 99% sure that my PSS did not see as much wear in two days.

 

AD08R have a wear rating of 180 I think, which is pretty low. I think even the new Sport Cup 2s have a 180 rating. But each brand has its own way of rating wear, so not sure if we can compare accurately across brands.

Was just a thought I threw out there regarding PDCC and tire wear when driven hard. All the energy/heat has to go somewhere...

 

Are you gong faster?