I've driven on Z1SS 255s all around and back to my RS3s 225/255 on OEM wheels. My gas mileage is the same. I definitely don't doubt your data. It does sound like your preference is more towards something you can use for daily use.

This thread is so full of bullshit, it's amazing. Oh, I forgot, it's the internet.

I'm not familiar with Z1SS at all. Honestly, it may not be an issue with RS3's as much as that whole class of tires (super ultra max summer performance) compared to "regular" high performance tires like the ones I usually buy for daily driving.

Your current tires' lack of grip may be partially due to their age. If you're not driving in rain, then yes, I'd recommend the RS3. A higher limit generally won't hurt you. Please do keep in mind that the V12 makes a lot more noise as they start to break away. It may be better to get the V12, and eventually step up as you get used to better tires.



I'm confident in the data I've shown above. They clearly eat up about 5% more torque than the tires I've had before (Sumitomo HTRZ-II and HTRZ-III). Since top speeds on a track are much more about corner exit speed and aerodynamics than anything else, I don't think we could draw any conclusions from them.
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We were at ACS this weekend where top speeds are in the 130s. Setups for the most part are documented, and most people are running full data. Even with respect to corner exit speed into the front straight, there is no real difference in top speed, even when factoring in the different tires that are used. (Z1SS, RS3, RE-11, NT01 this particular weekend)

As you stated, it may be just that the entire category of tires have similar rolling resistance, so we simply don't see the difference from the less sticky tires.

I did note that I got better MPG when I dailied on AP1 wheels and tires, but the MPG increase from having my exhaust and tune is more than double the MPG gain from the smaller wheels and narrower tires.

Do we know you?

Totally agree, it could be that most of us here have minimal/zero experience with tires not in tire-rack's "extreme summer" category, myself included.

I know Mleach. He's pretty cool and smart too. He's a bit of a loose cannon from time to time and that's why we love him. Please excuse his bluntness but he does have somewhat of a point.

The content of this thread is strictly my opinion (along with others) with minimal quantifiable data, so I suppose bullshit could be called :p It's also (imo, extremely) biased toward street and track use, rather than AutoX.

I'm neither the fastest nor slowest driver around, but I do drive based on feel and car feedback rather than data and visual cues.

Yea psychoazn is in the middle of the pack just like the rest of us in here. :argh:

Gernby - First, hankooks require more pressure. I'd recommend 35 PSI-ish for the street. That's definitely a huge part of it. Driving on the tires at 30 psi is like driving on big floppy pillows, so I wouldn't be surprised at your results. The feel that remains after pumping the tires up is probably largely your diameter change.

Second, have you considered that a big part of the higher rolling resistance is simply due to them being a stickier tire? When you add significantly more surface adhesion, like these tires do, you get more rolling resistance. So any other tire with similar traction properties would do the same thing.

Anyway, I don't think anyone in this thread is worried about rolling resistance. It was an interesting discovery to mention and I'm glad you did but now it seems like you're continually recommending people to steer away from them solely for that reason - that is not everyone else's main criteria for choosing a tire, least of all in this thread.

On another note, a little earlier people were talking about wet traction for RE11 vs Star spec - not sure if anyone else saw this month's GRM, but at least for their conditions/test the star specs were significantly faster in the wet.

Did the GRM test include the Toyo R1R? If so how did it do?

I guess the test was on wet performance. What tires did they test? Who won?

I have to start getting GRM.

Thanks for the replies and help.

I decided to get the V12's for now. For my needs and skill level the RS3 would probably be overkill. I don't plan on keeping the AP1 wheels on forever anyways so when I upgrade wheels I might try the RS3's at that time. Hopefully the V12's will fit my needs.

thanks again