Jack Kramer

Trying to get some extra wear out of my MPSC's. I very slighty corded the extreme outside edge of a rear tire at a DE this weekend. Inside tread is still in reasonable condition.

Is there anything inherent in the tire design that would preclude remounting the tire's inside out? I used to do this all the time with my Kumho Victoracers and would get an extra event or so out of them, but the older R1's were asymetrical in their design and flipping was a "no-no".

I know the tead pattern is different, but after a few sessions I suspect the remaining tread blocks that were on the inside would be worn down so the tire would be consistent across it's entire face.

Anyone do this yet?

Thanks!

Flying Finn

Kim,

Any quesstimates how many cycles you have?

I was probably doing similar stuff as you last time at Sebring so I'm wondering whether I have used all the cycles I have (after about 3000 miles & maybe 40 cycles I still have little thread left)

rdstemler

I "flipped" before the wear was too much and they worked just fine. I did it after I was told by many others with more experience that it worked!

I didn't do it for a corded tire.

Jack Kramer

Silver Bullet,

I wasn't implying I would run on a corded tire, just wanted to know if they could be flipped to extend tire life.

I got a more agressive alignment prior to this last event (-2.5 front, -2.0 rear) so I suspect future tire wear will be more even.

Your comment about the heat cycles is interesting. Previous discussions on this forum seemed to indicate an extended life for the MPSC's. How many heat cycles are you talking about?

Thanks

Greg Fishman

From talking with a Michelin engineer you do not want to run these tires to the cords. There is a layer between the tread and the cords and it is not very grippy. Once your laptimes start to diminish significantly your MPSC's are probably garbage.

Flying Finn

Thanks guys.

BrandonH

You might also think about running more camber. It is a compromise with a dual purpose car: either wear out the insides of your street tires, or the outsides of your track tires. Someday someone will do the analysis and determine the camber setting that optimizes wear of each at the lowest cost compromise...
Brandon

Bill Gregory

As I recall, Michelin says no more than -3 degrees, and that -2 degrees to -3 degrees works.

DJF1

Used to run -2.3 front and -2.7 rear bumped it to -2.7 front and -3.0 rear. tire wear on the track : very even across the tire width. If one does mostly street driving and occassional DE then these camber settings are extreme and will wear the inside of the streets. If you do not do too much street driving then the above settings are great as dont forget you punish the track tires more than the streets... So wear will be much accelerated on the track and that is where you really need to get not only good traction to use the whole tire, but good and even wear as well. I have inexpensive tires for whenever I drive it on the street so uneven wear does not bother me at all...

Richard Pankhurst

I have a dual purpose Carrera and run -2.5" at the front with 225's front for the track and 205's on the street. I have driven about 5k miles on my current set of street Kumho's with no noticable wear. My trick has been to buy the hardest street tires and to make sure the toe is set close to 0"

ZBlue996Kam

Read this:

http://www.tirerack.com/tires/tires....ilot+Sport+Cup

"On the outside, the Pilot Sport Cup uses dual zone tread compounds with the outer shoulder compound optimized for dry handling and the inside shoulder compound focused on wet traction"

Now you make the decision on whether you want to flip mount the M's