Tire rolling over

[Anthony]

I'm not worried about longevity in the sense of treadwear, but I definitely don't want a hard slick tire that appears to be a healthy performance tire. I'll look into this too.

[Racecomp Engineering]

Originally Posted by ZDan

I would lay the blame more on the tire sidewall being too compliant than "tire too wide for wheel". 225/45-17 on 7.5" width is a perfectly cromulent fitment. Running a narrower tire width isn't necessarily the greatest solution. A 205/50-17 might not roll over as much, but you would likely lose ultimate cornering grip. And of course wheels will be more susceptible to damage from curbs/potholes/etc.

I wouldn't bother going above 36psi cold, that's a bit much, really. I wouldn't worry too much about it, just get stiffer-sidewall tires next time (check tire tests, customer survey results, and customer reviews on Tire Rack's website).

Agreed, it's the soft floppy sidewall more than it is the tire width. Bonus points for using "cromulent"

- Andy

[Robbie]

Originally Posted by Anthony

That does make sense. I guess I'll have to research it next time I need to buy tires. I've been thinking about going with Yokohama AO48's or Toyo R888's next. No clue about sidewall strength on those tires though. Thanks!

Those are the worst of the available streetable R-compounds. NT01's are cheaper, grippier and last longer.

Just say no to R888's and A048's.

[Anthony]

Originally Posted by Robbie

Those are the worst of the available streetable R-compounds. NT01's are cheaper, grippier and last longer.

Just say no to R888's and A048's.

Well like I said, long lasting is not a priority. And like I didn't say, being streetable is not a priority either. But if you say grippier, you've got my attention.

[Robbie]

Originally Posted by Anthony

Well like I said, long lasting is not a priority. And like I didn't say, being streetable is not a priority either. But if you say grippier, you've got my attention.

Well, if you want grip, Hoosier R6's are at the top of the pile. Unless you're looking for the fastest one lapper, and then you'd get an A6. Otherwise Kuhmo V712's or BFG R1's are other similar options that are a big step up from the NT01/RA1/R888 category.

[Anthony]

Oh jeez. So much to research. This is my first not-a-DD car, so I'm a serious tire noob. Thanks!


(Newbie to serious tires, not a serious newbie to tires)

[CSG Mike]

Originally Posted by Anthony

Well like I said, long lasting is not a priority. And like I didn't say, being streetable is not a priority either. But if you say grippier, you've got my attention.

The R888 is primarily more popular because it comes in... more sizes.

E.g. if you have a Lotus, NSX, or GT-R, and you want a 100TW R-comp, you have... the R888.

The R888 is peakier; the NT01 is more forgiving. With a highly experienced driver and 100% dialed in setup, you'll extract marginally faster times with the R888 once the car is properly set up for the tire. The NT01 is more forgiving with minor setup errors and has a larger "sweet spot" for both tire pressure and temperature. It also heat cycles out slower (longer useful life; both tires are fastest when stickers)

I prefer the NT01 as well, as does @robispec.

The Maxxis RC1 is similar to the NT01; both @Evasive Motorsports and us have used them with great results. IMO, they're the fastest R-comp for when the weather is cooler.

Originally Posted by Anthony

Oh jeez. So much to research. This is my first not-a-DD car, so I'm a serious tire noob. Thanks!


(Newbie to serious tires, not a serious newbie to tires)

We're here to help.

[Anthony]

Originally Posted by CSG Mike

With a highly experienced driver and 100% dialed in setup, you'll extract marginally faster times with the R888 once the car is properly set up for the tire. The NT01 is more forgiving with minor setup errors and has a larger "sweet spot" for both tire pressure and temperature. It also heat cycles out slower (longer useful life; both tires are fastest when stickers)

I prefer the NT01 as well, as does @robispec.

SOLD!

[Big-B]

While I was swapping the left and right rears, I thought I'd share a picture of the mark it left on the sidewall. As you can see, it got down to about the top of the Goodyear wording. But, it still wasn't enough to rub off the sprues (the tire is still pretty new). I'm really surprised that it would have more grip than the sidewall could handle, these aren't very tall sidewalls.



http://www.flickr.com/photos/brianpo...57629116296457

[mla163]

Originally Posted by Big-B

...I'm really surprised that it would have more grip than the sidewall could handle, these aren't very tall sidewalls.

http://www.flickr.com/photos/brianpo...57629116296457

That's my point of view still. Do you have pictures of where the wheel was scraped?

The picture you show doesn't look out of the ordinary.

edit: did you have curb rash on the wheel? or just the tire?

[Big-B]

The wheel never scraped, the scrub marks only go down as far as the picture shows. Which is about an inch past anything resembling a tread.

[CSG Mike]

Originally Posted by Big-B

While I was swapping the left and right rears, I thought I'd share a picture of the mark it left on the sidewall. As you can see, it got down to about the top of the Goodyear wording. But, it still wasn't enough to rub off the sprues (the tire is still pretty new). I'm really surprised that it would have more grip than the sidewall could handle, these aren't very tall sidewalls.



http://www.flickr.com/photos/brianpo...57629116296457

Are you sure that's rollover? The "nubs" are still there, so there was virtually no scrubbing, and the pattern seems to be straight down, toward the center of the tire...

Are you sure this isn't from hitting a dip hard and the tire had some extra flex?

[GTB/ZR-1]

Originally Posted by Big-B

I wasn't racing or on a Autocross, but might as well have been with the speed I have taken this corner.

I'm staying off the roads in Polk County!

[Big-B]

Originally Posted by CSG Mike

Are you sure that's rollover? The "nubs" are still there, so there was virtually no scrubbing, and the pattern seems to be straight down, toward the center of the tire...

Are you sure this isn't from hitting a dip hard and the tire had some extra flex?

That's the $100,000 question. It was a quick corner and the sensation only lasted for a fraction of a second. I would say the sidewall laid over and it slid on the sidewall for just that fraction of a second (only about a quarter of the tire has the scuff mark). That's the best I can explain it.