James Bailey

275x35x18 any idea what does this ??

Imo000

Driving on a gravel road for a loooong time?

the flyin' scotsman

thats sure looks like gravel.......my truck that was once driven on many gravel roads at somewhat high speed exhibited same.

rad_951

"Chunking" from autocross or track day?

Mrmerlin

it looks like old rubber that has gotten hot a few times and now has lost its ability to stay in compound. the tires will probably wear for a long time though they will not be very grippy, but seem to exhibit a plastic type surface.
replace the tires and get 16 inch wheels

BTW what is the MFG date on these tires

risaac928

Tires from Wally Mart?

James Bailey

here are the fronts much newer tires last few are some seasoned 15 inch...

vze2jshn

Dried out, hard tires.

Ducman82

i kind get the same on tires on my nissan. i think its the damn textured concrete on my driveway from when i turn in to the drive at a sharp angle

James Bailey

Yes chunking from running full tread depth tires on a track for 15-20 minutes. ANY new tire at full depth will do the same if really pushed hard. Even the Victor Racers MUST be shaved if they are to work right....If I fail to switch from the street tires to the " race " tires it does not take long to rip chunks off the tread blocks. The slicks still have a little life left in them even if heat cycled a bit too much but I do have a new set already mounted for this weekend...Pomona Fairgrounds 2 1/2 mie course......

Erik N

Those are Kuhmo Ecstas in the first pic. I ran a set of those once, probably the worst tire I ever had on the 928. They chunked just like that, off that inner tread gap. Soon they began to buzz like an orbital sander. Never was I more glad to wear out a set of tires and replace.

The next tires look like old-pattern Dunlop SP8000's. I ran a set of those once, too. I liked them.

Lizard928

My vote is getting a little too hot on too rough of a road surface.

This is light chunking, not as bad as I would expect a full tire to do at full temps on the track. Though try as I might, I have never chunked my tires, even on the track.....

Randy V

So you know the cause and this is just a little JB test?

How's the acting career coming along?

James Bailey

Seems that most jobs are for 18 years old to look younger(avoids all the child labor issues); 20-40 year old clean cut no tatts short hair to play cops EMTS Lab assistants, upscale attractive no facial hair to play detectives, lawyers,business people; 25-35 years old HOT HOT attractive upscale to play club scenes,party scene all average higth, weight so wardrobe can dress you...........Not too many calls for a 6ft 4inch 360 lb Santa Clause But I am having fun with it ! Most of the time extras are there to blend in and not distract from the main actors.
Did work Law and Order L A , couple days was on camera a good bit but you never know what gets used or cut...I was of course a Homeless guy...

Randy V

So you're a perfect match then!