I bought a set of 205/50x15 for the track. They lasted 2 sessions, about 50 minutes then the fronts chunked badly. My rep would not replace them & Kumho will not respond to my emails. My rep said I over drove these R tires.

I was testing them to try for my race car. If they passed the lapping day I'd switch my Toyo RA1's to Kumhos as they do have more grip. Alas 2 sessions are not enough as a race weekend consists of 2 prac, 2 qual, 3 races.

http://216.218.51.60/forums/thread.p...d=13&styleid=1

 

You probably did overdrive them, or did not heat cycle them properly. I've had both the Victoracer and Ecsta V700, and both lasted three full weekends...


[Modified by Jason Franza, 6:00 AM 8/14/2002]

 

My Ecsta v700s lasted 2 weekends of HPDEs and 2 weekends of racing(4 races) and there's still a little wear left in them. I think I'll have them swapped on the rim for the 5th weekend. I assume one if not all of the following applies in your situation: 1)Did not heat cycle them properly 2)Did not have them shaved 3)Possibly didn't use correct pressures and 4)Over-drove the tires all together............. Any one of the 4 combinations can ruin a set of tires.

 

1. I did heat cycle them
2. No, did not shave them
3. Ran pressures hot at 40
4. How do you over drive R compounds?
5. I'm not the only one who experienced these problems! Check the link

 

Idiot question here: ...What does it mean to "heat cycle" a tire??

 

That's not a stupid question

This link may help...

http://www.tirerack.com/tires/tirete...tcycletech.htm

 

Have you seen this thread yet?

https://honda-tech.com/zerothread?id=252564


My non-educated Cliffs Notes:

1. Run lower pressure
2. Check alignment
3. Don't overdrive


Pat, not an expert by any means

 

Yeah. I'm actually running a lot lower than Bobby, cold. I run 28 in the front, 30 in the rear. It's working great so far

 

it's obviously working well...keep rollin those hatchcraps

 

There's your problem...

 

That's why I use P Zero C's for my 996 & RA1's for my racer. No need to shave them. Heat cycle does get a few extra sessions.

 

Good stuff guys....