Tire failure. Again

[mossaidis]

The thread also reminded me that I had a toyo seperate from the bead once. Front left at Limerock going down the straight away after a day of dual driving. It was 1 of 20 Toyos where I didn't have any issues with them.

42lbs Hot "might" be okay on the front of a FWD car, but it certainly would not be anywhere close to fast or optimal. I wouldn't trust it. You don't want to see any more than 37-38 lbs hot on any tire, toyo, kumho, hoosier. Some of the manufacturers are more forgiving than others so you might be able to get away with it but doesn't mean you should.

My fastest times on my FWD Honda Civic with a 225/45R15 at 2290 lbs is 40 lbs hot with Hoosiers. You might not trust it, but the timing clock has different intentions and my placement says otherwise. Much about pressures has also to do with car setup as well.

[Simon T.]

Were you running Chin?

[backformore]

I sure was Simon. Black Civic Si in the blue group when I was not instructing. Seems like I remember you name on the entry list. I assume you were there too?

A little further investigation also reveals that the tires were on the overinflated side, although still seemingly withing Toyos advised values. Also, there was some scuffing on the inner sidewall that reminded me I ALMOST went over the back of the curbing at turn 10A earlier in the weekend, which, if you are familiar with it, is a BIG drop off. So it's possible that the combination led to the failure.

The biggest curiosity is that I had the same failure with a different tire when the car was configured completely differently. Things that make you go Hmmmmm.

[backformore]

Trying to post pics of failed tire.

[MSPERBER]

Lots of camber for a car easy on tire wear, do tire temps you may not need that much up front, and what were your cold temps when u first went out. It appears like a tire failure from a combination of possible multiple items, pressure, camber, curb abuse, and or just a bad tire. Kumho on my front driver requires higher than the other brands cold temps. Just stuff to consider.

[adamjabaay]

had this happen twice this year. Luckily while running old tires instructing at hpde events

both drivers front...both old mid-year 2009 r6's. Different tracks (mid ohio and gingerman)

both happened end-of- session.. Both were SUCH INTENSE VIBRATIONS. Huge bubbles, look like that pic

[Matt Rowe]

I've had 2 Hoosiers do something identical this season. Both tires were R6's bought last year. My suspicion is it is due to a combination of high tire temps and damage from curbs as both times the failure was preceded by a slightly different line through a section of curbing.

Either that or my tires were just jealous of those fancy F1 tires.