Jim,

I running out of ideas. I have Yoko AVS ES100's 225/40/17 and 255/45/17 mounted on Volk LE28's.

They are about 6000 kms old (4000 miles) and the rears are almost done, noteably in the centre of the tread.

I don't drive aggressively, I've had two alignments only to confirm that the car falls within stock specs (I'm not lowered or anything)

I've decreased the pressure to 28psi cold to try to even out the wear towards the edges.

Nothing is working, they are basically melting off the rims. THe guy at the alignment shop suggested perhaps a bad batch of rubber.

My snow tires are fine after 2 winters, with no visible signs of accelerated wear.

Any ideas?

 

I had 2 sets of Yoko ES100's do the exact same thing, 255-40-17, on 9" wheels, and this has been reported by many. Stock S02's have worn evenly (though quickly) in the rear, go figure.

 

My dad had 225/50/16 ES100s mounted on the stock 16x7 wheels of his Mercedes E320. No aggressive driving, and pressures always within 2-3psi of factory specs. He had exactly the same problem, much faster wear in the center, especially the rear. Sounds like a construction issue.

Peter

 

Under acceleration the middle of the tire deforms, it cannot be prevented. But it can be minimized, done by INCREASING tire pressures. If you decrease tire pressure you are making the situation worse.

On my Porsche, stock tire pressures are 29 front and 32 rear. When I used 36 all around, I got even tire wear. I have used these pressures on my S2000 and have gotten even tire wear too. If 36 is too high for you, try 34 or 33.

Chris
S2000 Spa Yellow
Montclair, NJ